The sample demonstrates how to extract images and text from PDF document.

(NO screenshot)

using System;
using System.Collections.Generic;
using System.Drawing;
using System.Drawing.Imaging;
using System.IO;
using System.Text;
using Spire.Pdf;

namespace Extraction
{
    class Program
    {
        static void Main(string[] args)
        {
            //Create a pdf document.
            PdfDocument doc = new PdfDocument();
            doc.LoadFromFile(@"Sample2.pdf");

            StringBuilder buffer = new StringBuilder();
            IList<Image> images = new List<Image>();

            foreach (PdfPageBase page in doc.Pages)
            {
                buffer.Append(page.ExtractText());
                foreach (Image image in page.ExtractImages())
                {
                    images.Add(image);
                }
            }

            doc.Close();

            //save text
            String fileName = "TextInPdf.txt";
            File.WriteAllText(fileName, buffer.ToString());

            //save image
            int index = 0;
            foreach (Image image in images)
            {
                String imageFileName
                    = String.Format("Image-{0}.png", index++);
                image.Save(imageFileName, ImageFormat.Png);
            }

            //Launching the Text file.
            System.Diagnostics.Process.Start(fileName);
        }

    }
}

Imports System.Collections.Generic
Imports System.Drawing
Imports System.Drawing.Imaging
Imports System.IO
Imports System.Text
Imports Spire.Pdf

Namespace Extraction
    Friend Class Program
        Shared Sub Main(ByVal args() As String)
            'Create a pdf document.
            Dim doc As New PdfDocument()
            doc.LoadFromFile("Sample2.pdf")

            Dim buffer As New StringBuilder()
            Dim images As IList(Of Image) = New List(Of Image)()

            For Each page As PdfPageBase In doc.Pages
                buffer.Append(page.ExtractText())
                For Each image As Image In page.ExtractImages()
                    images.Add(image)
                Next image
            Next page

            doc.Close()

            'save text
            Dim fileName As String = "TextInPdf.txt"
            File.WriteAllText(fileName, buffer.ToString())

            'save image
            Dim index As Integer = 0
            For Each image As Image In images
                Dim imageFileName As String = String.Format("Image-{0}.png", index)
                index += 1
                image.Save(imageFileName, ImageFormat.Png)
            Next image

            'Launching the Text file.
            Process.Start(fileName)
        End Sub

    End Class
End Namespace

The sample demonstrates how to draw text as watermark in PDF document.

Download TextWaterMark.pdf

using System;
using System.Drawing;
using Spire.Pdf;
using Spire.Pdf.Graphics;
using Spire.Pdf.Tables;

namespace TextWaterMark
{
    class Program
    {
        static void Main(string[] args)
        {
            //Create a pdf document.
            PdfDocument doc = new PdfDocument();

            //margin
            PdfUnitConvertor unitCvtr = new PdfUnitConvertor();
            PdfMargins margin = new PdfMargins();
            margin.Top = unitCvtr.ConvertUnits(2.54f, PdfGraphicsUnit.Centimeter, PdfGraphicsUnit.Point);
            margin.Bottom = margin.Top;
            margin.Left = unitCvtr.ConvertUnits(3.17f, PdfGraphicsUnit.Centimeter, PdfGraphicsUnit.Point);
            margin.Right = margin.Left;

            // Create one page
            PdfPageBase page = doc.Pages.Add(PdfPageSize.A4, margin);

            PdfTilingBrush brush
                = new PdfTilingBrush(new SizeF(page.Canvas.ClientSize.Width / 2, page.Canvas.ClientSize.Height / 3));
            brush.Graphics.SetTransparency(0.3f);
            brush.Graphics.Save();
            brush.Graphics.TranslateTransform(brush.Size.Width / 2, brush.Size.Height / 2);
            brush.Graphics.RotateTransform(-45);
            brush.Graphics.DrawString("Spire.Pdf Demo",
                new PdfFont(PdfFontFamily.Helvetica, 24), PdfBrushes.Violet, 0, 0,
                new PdfStringFormat(PdfTextAlignment.Center));
            brush.Graphics.Restore();
            brush.Graphics.SetTransparency(1);
            page.Canvas.DrawRectangle(brush, new RectangleF(new PointF(0, 0), page.Canvas.ClientSize));

            //Draw the page
            DrawPage(page);

            //Save pdf file.
            doc.SaveToFile("TextWaterMark.pdf");
            doc.Close();

            //Launching the Pdf file.
            System.Diagnostics.Process.Start("TextWaterMark.pdf");
        }

        private static void DrawPage(PdfPageBase page)
        {
            float y = 10;

            //title
            PdfBrush brush1 = PdfBrushes.Black;
            PdfTrueTypeFont font1 = new PdfTrueTypeFont(new Font("Arial", 16f, FontStyle.Bold));
            PdfStringFormat format1 = new PdfStringFormat(PdfTextAlignment.Center);
            page.Canvas.DrawString("Category Sales by Year", font1, brush1, page.Canvas.ClientSize.Width / 2, y, format1);
            y = y + font1.MeasureString("Category Sales by Year", format1).Height;
            y = y + 5;

            String[][] data
                = {
                    new String[]{"Category Name", "1994 Sale Amount", "1995 Sale Amount", "1996 Sale Amount"},
                    new String[]{"Beverages", "38,487.20", "102,479.46", "126,901.53"},
                    new String[]{"Condiments", "16,402.95", "51,041.83", "38,602.31"},
                    new String[]{"Confections", "23,812.90", "79,752.25", "63,792.07"},
                    new String[]{"Dairy Products", "30,027.79", "116,495.45", "87,984.05"},
                    new String[]{"Grains/Cereals", "7,313.92", "53,823.48", "34,607.19"},
                    new String[]{"Meat/Poultry", "19,856.86", "77,164.75", "66,000.75"},
                    new String[]{"Produce", "10,694.96", "45,973.69", "43,315.93"},
                    new String[]{"Seafood", "16,247.77", "64,195.51", "50,818.46"}
                };

            PdfTable table = new PdfTable();
            table.Style.CellPadding = 2;
            table.Style.BorderPen = new PdfPen(brush1, 0.75f);
            table.Style.DefaultStyle.BackgroundBrush = PdfBrushes.SkyBlue;
            table.Style.DefaultStyle.Font = new PdfTrueTypeFont(new Font("Arial", 10f));
            table.Style.HeaderSource = PdfHeaderSource.Rows;
            table.Style.HeaderRowCount = 1;
            table.Style.HeaderStyle.BackgroundBrush = PdfBrushes.CadetBlue;
            table.Style.HeaderStyle.Font = new PdfTrueTypeFont(new Font("Arial", 11f, FontStyle.Bold));
            table.Style.HeaderStyle.StringFormat = new PdfStringFormat(PdfTextAlignment.Center);
            table.Style.ShowHeader = true;
            table.DataSource = data;

            PdfLayoutResult result = table.Draw(page, new PointF(0, y));
            y = y + result.Bounds.Height + 5;

            PdfBrush brush2 = PdfBrushes.LightGray;
            PdfTrueTypeFont font2 = new PdfTrueTypeFont(new Font("Arial", 9f));
            page.Canvas.DrawString("* All data from NorthWind", font2, brush2, 5, y);
        }                
    }
}

Imports System.Drawing
Imports Spire.Pdf
Imports Spire.Pdf.Graphics
Imports Spire.Pdf.Tables

Namespace TextWaterMark
    Friend Class Program
        Shared Sub Main(ByVal args() As String)
            'Create a pdf document.
            Dim doc As New PdfDocument()

            'margin
            Dim unitCvtr As New PdfUnitConvertor()
            Dim margin As New PdfMargins()
            margin.Top = unitCvtr.ConvertUnits(2.54F, PdfGraphicsUnit.Centimeter, PdfGraphicsUnit.Point)
            margin.Bottom = margin.Top
            margin.Left = unitCvtr.ConvertUnits(3.17F, PdfGraphicsUnit.Centimeter, PdfGraphicsUnit.Point)
            margin.Right = margin.Left

            ' Create one page
            Dim page As PdfPageBase = doc.Pages.Add(PdfPageSize.A4, margin)

            Dim brush As New PdfTilingBrush(New SizeF(page.Canvas.ClientSize.Width \ 2, page.Canvas.ClientSize.Height \ 3))
            brush.Graphics.SetTransparency(0.3F)
            brush.Graphics.Save()
            brush.Graphics.TranslateTransform(brush.Size.Width \ 2, brush.Size.Height \ 2)
            brush.Graphics.RotateTransform(-45)
            brush.Graphics.DrawString("Spire.Pdf Demo", New PdfFont(PdfFontFamily.Helvetica, 24), _
                                      PdfBrushes.Violet, 0, 0, New PdfStringFormat(PdfTextAlignment.Center))
            brush.Graphics.Restore()
            brush.Graphics.SetTransparency(1)
            page.Canvas.DrawRectangle(brush, New RectangleF(New PointF(0, 0), page.Canvas.ClientSize))

            'Draw the page
            DrawPage(page)

            'Save pdf file.
            doc.SaveToFile("TextWaterMark.pdf")
            doc.Close()

            'Launching the Pdf file.
            Process.Start("TextWaterMark.pdf")
        End Sub

        Private Shared Sub DrawPage(ByVal page As PdfPageBase)
            Dim y As Single = 10

            'title
            Dim brush1 As PdfBrush = PdfBrushes.Black
            Dim font1 As New PdfTrueTypeFont(New Font("Arial", 16.0F, FontStyle.Bold))
            Dim format1 As New PdfStringFormat(PdfTextAlignment.Center)
            page.Canvas.DrawString("Category Sales by Year", font1, brush1, _
                                   page.Canvas.ClientSize.Width \ 2, y, format1)
            y = y + font1.MeasureString("Category Sales by Year", format1).Height
            y = y + 5

            Dim data()() As String _
                = {New String() {"Category Name", "1994 Sale Amount", "1995 Sale Amount", "1996 Sale Amount"}, _
                   New String() {"Beverages", "38,487.20", "102,479.46", "126,901.53"}, _
                   New String() {"Condiments", "16,402.95", "51,041.83", "38,602.31"}, _
                   New String() {"Confections", "23,812.90", "79,752.25", "63,792.07"}, _
                   New String() {"Dairy Products", "30,027.79", "116,495.45", "87,984.05"}, _
                   New String() {"Grains/Cereals", "7,313.92", "53,823.48", "34,607.19"}, _
                   New String() {"Meat/Poultry", "19,856.86", "77,164.75", "66,000.75"}, _
                   New String() {"Produce", "10,694.96", "45,973.69", "43,315.93"}, _
                   New String() {"Seafood", "16,247.77", "64,195.51", "50,818.46"}}

            Dim table As New PdfTable()
            table.Style.CellPadding = 2
            table.Style.BorderPen = New PdfPen(brush1, 0.75F)
            table.Style.DefaultStyle.BackgroundBrush = PdfBrushes.SkyBlue
            table.Style.DefaultStyle.Font = New PdfTrueTypeFont(New Font("Arial", 10.0F))
            table.Style.HeaderSource = PdfHeaderSource.Rows
            table.Style.HeaderRowCount = 1
            table.Style.HeaderStyle.BackgroundBrush = PdfBrushes.CadetBlue
            table.Style.HeaderStyle.Font = New PdfTrueTypeFont(New Font("Arial", 11.0F, FontStyle.Bold))
            table.Style.HeaderStyle.StringFormat = New PdfStringFormat(PdfTextAlignment.Center)
            table.Style.ShowHeader = True
            table.DataSource = data

            Dim result As PdfLayoutResult = table.Draw(page, New PointF(0, y))
            y = y + result.Bounds.Height + 5

            Dim brush2 As PdfBrush = PdfBrushes.LightGray
            Dim font2 As New PdfTrueTypeFont(New Font("Arial", 9.0F))
            page.Canvas.DrawString("* All data from NorthWind", font2, brush2, 5, y)
        End Sub
    End Class
End Namespace

The sample demonstrates how to work with text layout in PDF document.

Download TextLayout.pdf

using System;
using System.Drawing;
using Spire.Pdf;
using Spire.Pdf.Graphics;

namespace TextLayout
{
    class Program
    {
        static void Main(string[] args)
        {
            //Create a pdf document.
            PdfDocument doc = new PdfDocument();

            // Create one page
            PdfPageBase page = doc.Pages.Add();
            float pageWidth = page.Canvas.ClientSize.Width;
            float y = 0;

            //page header
            PdfPen pen1 = new PdfPen(Color.LightGray, 1f);
            PdfBrush brush1 = new PdfSolidBrush(Color.LightGray);
            PdfTrueTypeFont font1 = new PdfTrueTypeFont(new Font("Arial", 8f, FontStyle.Italic));
            PdfStringFormat format1 = new PdfStringFormat(PdfTextAlignment.Right);
            String text = "Demo of Spire.Pdf";
            page.Canvas.DrawString(text, font1, brush1, pageWidth, y, format1);
            SizeF size = font1.MeasureString(text, format1);
            y = y + size.Height + 1;
            page.Canvas.DrawLine(pen1, 0, y, pageWidth, y);

            //title
            y = y + 5;
            PdfBrush brush2 = new PdfSolidBrush(Color.Black);
            PdfTrueTypeFont font2 = new PdfTrueTypeFont(new Font("Arial", 16f, FontStyle.Bold));
            PdfStringFormat format2 = new PdfStringFormat(PdfTextAlignment.Center);
            format2.CharacterSpacing = 1f;
            text = "Summary of Science";
            page.Canvas.DrawString(text, font2, brush2, pageWidth / 2, y, format2);
            size = font2.MeasureString(text, format2);
            y = y + size.Height + 6;

            //icon
            PdfImage image = PdfImage.FromFile("Wikipedia_Science.png");
            page.Canvas.DrawImage(image, new PointF(pageWidth - image.PhysicalDimension.Width, y));
            float imageLeftSpace = pageWidth - image.PhysicalDimension.Width - 2;
            float imageBottom = image.PhysicalDimension.Height + y;

            //refenrence content
            PdfTrueTypeFont font3 = new PdfTrueTypeFont(new Font("Arial", 9f));
            PdfStringFormat format3 = new PdfStringFormat();
            format3.ParagraphIndent = font3.Size * 2;
            format3.MeasureTrailingSpaces = true;
            format3.LineSpacing = font3.Size * 1.5f;
            String text1 = "(All text and picture from ";
            String text2 = "Wikipedia";
            String text3 = ", the free encyclopedia)";
            page.Canvas.DrawString(text1, font3, brush2, 0, y, format3);

            size = font3.MeasureString(text1, format3);
            float x1 = size.Width;
            format3.ParagraphIndent = 0;
            PdfTrueTypeFont font4 = new PdfTrueTypeFont(new Font("Arial", 9f, FontStyle.Underline));
            PdfBrush brush3 = PdfBrushes.Blue;
            page.Canvas.DrawString(text2, font4, brush3, x1, y, format3);
            size = font4.MeasureString(text2, format3);
            x1 = x1 + size.Width;

            page.Canvas.DrawString(text3, font3, brush2, x1, y, format3);
            y = y + size.Height;

            //content
            PdfStringFormat format4 = new PdfStringFormat();
            text = System.IO.File.ReadAllText("Summary_of_Science.txt");
            PdfTrueTypeFont font5 = new PdfTrueTypeFont(new Font("Arial", 10f));
            format4.LineSpacing = font5.Size * 1.5f;
            PdfStringLayouter textLayouter = new PdfStringLayouter();
            float imageLeftBlockHeight = imageBottom - y;
            PdfStringLayoutResult result
                = textLayouter.Layout(text, font5, format4, new SizeF(imageLeftSpace, imageLeftBlockHeight));
            if (result.ActualSize.Height < imageBottom - y)
            {
                imageLeftBlockHeight = imageLeftBlockHeight + result.LineHeight;
                result = textLayouter.Layout(text, font5, format4, new SizeF(imageLeftSpace, imageLeftBlockHeight));
            }
            foreach (LineInfo line in result.Lines)
            {
                page.Canvas.DrawString(line.Text, font5, brush2, 0, y, format4);
                y = y + result.LineHeight;
            }
            PdfTextWidget textWidget = new PdfTextWidget(result.Remainder, font5, brush2);
            PdfTextLayout textLayout = new PdfTextLayout();
            textLayout.Break = PdfLayoutBreakType.FitPage;
            textLayout.Layout = PdfLayoutType.Paginate;
            RectangleF bounds = new RectangleF(new PointF(0, y), page.Canvas.ClientSize);
            textWidget.StringFormat = format4;
            textWidget.Draw(page, bounds, textLayout);

            //Save pdf file.
            doc.SaveToFile("TextLayout.pdf");
            doc.Close();

            //Launching the Pdf file.
            System.Diagnostics.Process.Start("TextLayout.pdf");
        }
    }
}

Imports System.Drawing
Imports Spire.Pdf
Imports Spire.Pdf.Graphics

Namespace TextLayout
    Friend Class Program
        Shared Sub Main(ByVal args() As String)
            'Create a pdf document.
            Dim doc As New PdfDocument()

            ' Create one page
            Dim page As PdfPageBase = doc.Pages.Add()
            Dim pageWidth As Single = page.Canvas.ClientSize.Width
            Dim y As Single = 0

            'page header
            Dim pen1 As New PdfPen(Color.LightGray, 1.0F)
            Dim brush1 As PdfBrush = New PdfSolidBrush(Color.LightGray)
            Dim font1 As New PdfTrueTypeFont(New Font("Arial", 8.0F, FontStyle.Italic))
            Dim format1 As New PdfStringFormat(PdfTextAlignment.Right)
            Dim text As String = "Demo of Spire.Pdf"
            page.Canvas.DrawString(text, font1, brush1, pageWidth, y, format1)
            Dim size As SizeF = font1.MeasureString(text, format1)
            y = y + size.Height + 1
            page.Canvas.DrawLine(pen1, 0, y, pageWidth, y)

            'title
            y = y + 5
            Dim brush2 As PdfBrush = New PdfSolidBrush(Color.Black)
            Dim font2 As New PdfTrueTypeFont(New Font("Arial", 16.0F, FontStyle.Bold))
            Dim format2 As New PdfStringFormat(PdfTextAlignment.Center)
            format2.CharacterSpacing = 1.0F
            text = "Summary of Science"
            page.Canvas.DrawString(text, font2, brush2, pageWidth / 2, y, format2)
            size = font2.MeasureString(text, format2)
            y = y + size.Height + 6

            'icon
            Dim image As PdfImage = PdfImage.FromFile("Wikipedia_Science.png")
            page.Canvas.DrawImage(image, New PointF(pageWidth - image.PhysicalDimension.Width, y))
            Dim imageLeftSpace As Single = pageWidth - image.PhysicalDimension.Width - 2
            Dim imageBottom As Single = image.PhysicalDimension.Height + y

            'refenrence content
            Dim font3 As New PdfTrueTypeFont(New Font("Arial", 9.0F))
            Dim format3 As New PdfStringFormat()
            format3.ParagraphIndent = font3.Size * 2
            format3.MeasureTrailingSpaces = True
            format3.LineSpacing = font3.Size * 1.5F
            Dim text1 As String = "(All text and picture from "
            Dim text2 As String = "Wikipedia"
            Dim text3 As String = ", the free encyclopedia)"
            page.Canvas.DrawString(text1, font3, brush2, 0, y, format3)

            size = font3.MeasureString(text1, format3)
            Dim x1 As Single = size.Width
            format3.ParagraphIndent = 0
            Dim font4 As New PdfTrueTypeFont(New Font("Arial", 9.0F, FontStyle.Underline))
            Dim brush3 As PdfBrush = PdfBrushes.Blue
            page.Canvas.DrawString(text2, font4, brush3, x1, y, format3)
            size = font4.MeasureString(text2, format3)
            x1 = x1 + size.Width

            page.Canvas.DrawString(text3, font3, brush2, x1, y, format3)
            y = y + size.Height

            'content
            Dim format4 As New PdfStringFormat()
            text = System.IO.File.ReadAllText("Summary_of_Science.txt")
            Dim font5 As New PdfTrueTypeFont(New Font("Arial", 10.0F))
            format4.LineSpacing = font5.Size * 1.5F
            Dim textLayouter As New PdfStringLayouter()
            Dim imageLeftBlockHeight As Single = imageBottom - y
            Dim result As PdfStringLayoutResult _
                = textLayouter.Layout(text, font5, format4, New SizeF(imageLeftSpace, imageLeftBlockHeight))
            If result.ActualSize.Height < imageBottom - y Then
                imageLeftBlockHeight = imageLeftBlockHeight + result.LineHeight
                result = textLayouter.Layout(text, font5, format4, New SizeF(imageLeftSpace, imageLeftBlockHeight))
            End If
            For Each line As LineInfo In result.Lines
                page.Canvas.DrawString(line.Text, font5, brush2, 0, y, format4)
                y = y + result.LineHeight
            Next line
            Dim textWidget As New PdfTextWidget(result.Remainder, font5, brush2)
            Dim textLayout As New PdfTextLayout()
            textLayout.Break = PdfLayoutBreakType.FitPage
            textLayout.Layout = PdfLayoutType.Paginate
            Dim bounds As New RectangleF(New PointF(0, y), page.Canvas.ClientSize)
            textWidget.StringFormat = format4
            textWidget.Draw(page, bounds, textLayout)

            'Save pdf file.
            doc.SaveToFile("TextLayout.pdf")
            doc.Close()

            'Launching the Pdf file.
            Process.Start("TextLayout.pdf")
        End Sub
    End Class
End Namespace

The sample demonstrates how to draw text to a PDF document.

Download DrawText.pdf

using System;
using System.Drawing;
using Spire.Pdf;
using Spire.Pdf.Graphics;

namespace DrawText
{
    class Program
    {
        static void Main(string[] args)
        {
            //Create a pdf document.
            PdfDocument doc = new PdfDocument();

            // Create one page
            PdfPageBase page = doc.Pages.Add();

            DrawText(page);
            AlignText(page);
            AlignTextInRectangle(page);
            TransformText(page);
            RotateText(page);

            //Save doc file.
            doc.SaveToFile("DrawText.pdf");
            doc.Close();

            //Launching the Pdf file.
            System.Diagnostics.Process.Start("DrawText.pdf");
        }

        private static void RotateText(PdfPageBase page)
        {
            //save graphics state
            PdfGraphicsState state = page.Canvas.Save();

            //Draw the text - transform           
            PdfFont font = new PdfFont(PdfFontFamily.Helvetica, 10f);
            PdfSolidBrush brush = new PdfSolidBrush(Color.Blue);

            PdfStringFormat centerAlignment
                = new PdfStringFormat(PdfTextAlignment.Left, PdfVerticalAlignment.Middle);
            float x = page.Canvas.ClientSize.Width / 2;
            float y = 380;

            page.Canvas.TranslateTransform(x, y);
            for (int i = 0; i < 12; i++)
            {
                page.Canvas.RotateTransform(30);
                page.Canvas.DrawString("Go! Turn Around! Go! Go! Go!", font, brush, 20, 0, centerAlignment);
            }

            //restor graphics
            page.Canvas.Restore(state);
        }

        private static void TransformText(PdfPageBase page)
        {
            //save graphics state
            PdfGraphicsState state = page.Canvas.Save();

            //Draw the text - transform           
            PdfFont font = new PdfFont(PdfFontFamily.Helvetica, 18f);
            PdfSolidBrush brush1 = new PdfSolidBrush(Color.DeepSkyBlue);
            PdfSolidBrush brush2 = new PdfSolidBrush(Color.CadetBlue);

            page.Canvas.TranslateTransform(20, 200);
            page.Canvas.ScaleTransform(1f, 0.6f);
            page.Canvas.SkewTransform(-10, 0);
            page.Canvas.DrawString("Go! Turn Around! Go! Go! Go!", font, brush1, 0, 0);

            page.Canvas.SkewTransform(10, 0);
            page.Canvas.DrawString("Go! Turn Around! Go! Go! Go!", font, brush2, 0, 0);

            page.Canvas.ScaleTransform(1f, -1f);
            page.Canvas.DrawString("Go! Turn Around! Go! Go! Go!", font, brush2, 0, -2 * 18);
            //restor graphics
            page.Canvas.Restore(state);
        }

        private static void AlignTextInRectangle(PdfPageBase page)
        {
            //Draw the text - align in rectangle
            PdfFont font = new PdfFont(PdfFontFamily.Helvetica, 10f);
            PdfSolidBrush brush = new PdfSolidBrush(Color.Blue);
            RectangleF rctg1 = new RectangleF(0, 70, page.Canvas.ClientSize.Width / 2, 100);
            RectangleF rctg2
                = new RectangleF(page.Canvas.ClientSize.Width / 2, 70, page.Canvas.ClientSize.Width / 2, 100);
            page.Canvas.DrawRectangle(new PdfSolidBrush(Color.LightBlue), rctg1);
            page.Canvas.DrawRectangle(new PdfSolidBrush(Color.LightSkyBlue), rctg2);

            PdfStringFormat leftAlignment
                = new PdfStringFormat(PdfTextAlignment.Left, PdfVerticalAlignment.Top);
            page.Canvas.DrawString("Left! Left!", font, brush, rctg1, leftAlignment);
            page.Canvas.DrawString("Left! Left!", font, brush, rctg2, leftAlignment);

            PdfStringFormat rightAlignment
                = new PdfStringFormat(PdfTextAlignment.Right, PdfVerticalAlignment.Middle);
            page.Canvas.DrawString("Right! Right!", font, brush, rctg1, rightAlignment);
            page.Canvas.DrawString("Right! Right!", font, brush, rctg2, rightAlignment);

            PdfStringFormat centerAlignment
                = new PdfStringFormat(PdfTextAlignment.Center, PdfVerticalAlignment.Bottom);
            page.Canvas.DrawString("Go! Turn Around! Go! Go! Go!", font, brush, rctg1, centerAlignment);
            page.Canvas.DrawString("Go! Turn Around! Go! Go! Go!", font, brush, rctg2, centerAlignment);
        }

        private static void AlignText(PdfPageBase page)
        {
            //Draw the text - alignment
            PdfFont font = new PdfFont(PdfFontFamily.Helvetica, 20f);
            PdfSolidBrush brush = new PdfSolidBrush(Color.Blue);

            PdfStringFormat leftAlignment = new PdfStringFormat(PdfTextAlignment.Left, PdfVerticalAlignment.Middle);
            page.Canvas.DrawString("Left!", font, brush, 0, 20, leftAlignment);
            page.Canvas.DrawString("Left!", font, brush, 0, 50, leftAlignment);

            PdfStringFormat rightAlignment = new PdfStringFormat(PdfTextAlignment.Right, PdfVerticalAlignment.Middle);
            page.Canvas.DrawString("Right!", font, brush, page.Canvas.ClientSize.Width, 30, rightAlignment);
            page.Canvas.DrawString("Right!", font, brush, page.Canvas.ClientSize.Width, 60, rightAlignment);

            PdfStringFormat centerAlignment
                = new PdfStringFormat(PdfTextAlignment.Center, PdfVerticalAlignment.Middle);
            page.Canvas.DrawString("Go! Turn Around! Go! Go! Go!",
                font, brush, page.Canvas.ClientSize.Width / 2, 40, centerAlignment);
        }

        private static void DrawText(PdfPageBase page)
        {
            //save graphics state
            PdfGraphicsState state = page.Canvas.Save();

            //Draw text - brush
            String text = "Go! Turn Around! Go! Go! Go!";
            PdfPen pen = PdfPens.DeepSkyBlue;
            PdfSolidBrush brush = new PdfSolidBrush(Color.White);
            PdfStringFormat format = new PdfStringFormat();
            PdfFont font = new PdfFont(PdfFontFamily.Helvetica, 18f, PdfFontStyle.Italic);
            SizeF size = font.MeasureString(text, format);
            RectangleF rctg
                = new RectangleF(page.Canvas.ClientSize.Width / 2 + 10, 180,
                size.Width / 3 * 2, size.Height * 2);
            page.Canvas.DrawString(text, font, pen, brush, rctg, format);

            //restor graphics
            page.Canvas.Restore(state);
        }
    }
}

Imports System.Drawing
Imports Spire.Pdf
Imports Spire.Pdf.Graphics

Namespace DrawText
    Friend Class Program
        Shared Sub Main(ByVal args() As String)
            'Create a pdf document.
            Dim doc As New PdfDocument()

            ' Create one page
            Dim page As PdfPageBase = doc.Pages.Add()

            DrawText(page)
            AlignText(page)
            AlignTextInRectangle(page)
            TransformText(page)
            RotateText(page)

            'Save doc file.
            doc.SaveToFile("DrawText.pdf")
            doc.Close()

            'Launching the Pdf file.
            Process.Start("DrawText.pdf")
        End Sub

        Private Shared Sub RotateText(ByVal page As PdfPageBase)
            'save graphics state
            Dim state As PdfGraphicsState = page.Canvas.Save()

            'Draw the text - transform           
            Dim font As New PdfFont(PdfFontFamily.Helvetica, 10.0F)
            Dim brush As New PdfSolidBrush(Color.Blue)

            Dim centerAlignment As New PdfStringFormat(PdfTextAlignment.Left, PdfVerticalAlignment.Middle)
            Dim x As Single = page.Canvas.ClientSize.Width \ 2
            Dim y As Single = 380

            page.Canvas.TranslateTransform(x, y)
            For i As Integer = 0 To 11
                page.Canvas.RotateTransform(30)
                page.Canvas.DrawString("Go! Turn Around! Go! Go! Go!", font, brush, 20, 0, centerAlignment)
            Next i

            'restor graphics
            page.Canvas.Restore(state)
        End Sub

        Private Shared Sub TransformText(ByVal page As PdfPageBase)
            'save graphics state
            Dim state As PdfGraphicsState = page.Canvas.Save()

            'Draw the text - transform           
            Dim font As New PdfFont(PdfFontFamily.Helvetica, 18.0F)
            Dim brush1 As New PdfSolidBrush(Color.DeepSkyBlue)
            Dim brush2 As New PdfSolidBrush(Color.CadetBlue)

            page.Canvas.TranslateTransform(20, 200)
            page.Canvas.ScaleTransform(1.0F, 0.6F)
            page.Canvas.SkewTransform(-10, 0)
            page.Canvas.DrawString("Go! Turn Around! Go! Go! Go!", font, brush1, 0, 0)

            page.Canvas.SkewTransform(10, 0)
            page.Canvas.DrawString("Go! Turn Around! Go! Go! Go!", font, brush2, 0, 0)

            page.Canvas.ScaleTransform(1.0F, -1.0F)
            page.Canvas.DrawString("Go! Turn Around! Go! Go! Go!", font, brush2, 0, -2 * 18)
            'restor graphics
            page.Canvas.Restore(state)
        End Sub

        Private Shared Sub AlignTextInRectangle(ByVal page As PdfPageBase)
            'Draw the text - align in rectangle
            Dim font As New PdfFont(PdfFontFamily.Helvetica, 10.0F)
            Dim brush As New PdfSolidBrush(Color.Blue)
            Dim rctg1 As New RectangleF(0, 70, page.Canvas.ClientSize.Width \ 2, 100)
            Dim rctg2 As New RectangleF(page.Canvas.ClientSize.Width \ 2, 70, page.Canvas.ClientSize.Width \ 2, 100)
            page.Canvas.DrawRectangle(New PdfSolidBrush(Color.LightBlue), rctg1)
            page.Canvas.DrawRectangle(New PdfSolidBrush(Color.LightSkyBlue), rctg2)

            Dim leftAlignment As New PdfStringFormat(PdfTextAlignment.Left, PdfVerticalAlignment.Top)
            page.Canvas.DrawString("Left! Left!", font, brush, rctg1, leftAlignment)
            page.Canvas.DrawString("Left! Left!", font, brush, rctg2, leftAlignment)

            Dim rightAlignment As New PdfStringFormat(PdfTextAlignment.Right, PdfVerticalAlignment.Middle)
            page.Canvas.DrawString("Right! Right!", font, brush, rctg1, rightAlignment)
            page.Canvas.DrawString("Right! Right!", font, brush, rctg2, rightAlignment)

            Dim centerAlignment As New PdfStringFormat(PdfTextAlignment.Center, PdfVerticalAlignment.Bottom)
            page.Canvas.DrawString("Go! Turn Around! Go! Go! Go!", font, brush, rctg1, centerAlignment)
            page.Canvas.DrawString("Go! Turn Around! Go! Go! Go!", font, brush, rctg2, centerAlignment)
        End Sub

        Private Shared Sub AlignText(ByVal page As PdfPageBase)
            'Draw the text - alignment
            Dim font As New PdfFont(PdfFontFamily.Helvetica, 20.0F)
            Dim brush As New PdfSolidBrush(Color.Blue)

            Dim leftAlignment As New PdfStringFormat(PdfTextAlignment.Left, PdfVerticalAlignment.Middle)
            page.Canvas.DrawString("Left!", font, brush, 0, 20, leftAlignment)
            page.Canvas.DrawString("Left!", font, brush, 0, 50, leftAlignment)

            Dim rightAlignment As New PdfStringFormat(PdfTextAlignment.Right, PdfVerticalAlignment.Middle)
            page.Canvas.DrawString("Right!", font, brush, page.Canvas.ClientSize.Width, 30, rightAlignment)
            page.Canvas.DrawString("Right!", font, brush, page.Canvas.ClientSize.Width, 60, rightAlignment)

            Dim centerAlignment As New PdfStringFormat(PdfTextAlignment.Center, PdfVerticalAlignment.Middle)
            page.Canvas.DrawString("Go! Turn Around! Go! Go! Go!", _
                                   font, brush, page.Canvas.ClientSize.Width \ 2, 40, centerAlignment)
        End Sub

        Private Shared Sub DrawText(ByVal page As PdfPageBase)
            'save graphics state
            Dim state As PdfGraphicsState = page.Canvas.Save()

            'Draw text - brush
            Dim text As String = "Go! Turn Around! Go! Go! Go!"
            Dim pen As PdfPen = PdfPens.DeepSkyBlue
            Dim brush As New PdfSolidBrush(Color.White)
            Dim format As New PdfStringFormat()
            Dim font As New PdfFont(PdfFontFamily.Helvetica, 18.0F, PdfFontStyle.Italic)
            Dim size As SizeF = font.MeasureString(text, format)
            Dim rctg As New RectangleF(page.Canvas.ClientSize.Width \ 2 + 10, 180, size.Width \ 3 * 2, size.Height * 2)
            page.Canvas.DrawString(text, font, pen, brush, rctg, format)

            'restor graphics
            page.Canvas.Restore(state)
        End Sub
    End Class
End Namespace

This sample demonstrates how to export data table to text/sylk/csv/dif file.

The picture above represents using Excel application to open a SYLK type output file.

private void btnText_Click(object sender, EventArgs e)
{
    System.Data.OleDb.OleDbConnection oleDbConnection1
         = new System.Data.OleDb.OleDbConnection();
    oleDbConnection1.ConnectionString
        = @"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=..\..\..\..\Database\demo.mdb";

    System.Data.OleDb.OleDbCommand oleDbCommand1
        = new System.Data.OleDb.OleDbCommand();
    oleDbCommand1.CommandText = "select * from parts";
    oleDbCommand1.Connection = oleDbConnection1;

    Spire.DataExport.TXT.TXTExport txtExport1
        = new Spire.DataExport.TXT.TXTExport();

    txtExport1.ActionAfterExport = Spire.DataExport.Common.ActionType.OpenView;
    txtExport1.DataFormats.CultureName = "zh-CN";
    txtExport1.DataFormats.Currency = "c";
    txtExport1.DataFormats.DateTime = "yyyy-M-d H:mm";
    txtExport1.DataFormats.Float = "g";
    txtExport1.DataFormats.Integer = "g";
    txtExport1.DataFormats.Time = "H:mm";
    txtExport1.DataEncoding = Spire.DataExport.Common.EncodingType.ASCII;
    txtExport1.SQLCommand = oleDbCommand1;

    oleDbConnection1.Open();

    txtExport1.ExportType = Spire.DataExport.TXT.TextExportType.SYLK;
    txtExport1.FileName = "sample.slk";
    txtExport1.SaveToFile();

    txtExport1.ExportType = Spire.DataExport.TXT.TextExportType.CSV;
    txtExport1.FileName = "sample.csv";
    txtExport1.SaveToFile();

    txtExport1.ExportType = Spire.DataExport.TXT.TextExportType.DIF;
    txtExport1.FileName = "sample.dif";
    txtExport1.SaveToFile();

    txtExport1.ExportType = Spire.DataExport.TXT.TextExportType.TXT;
	txtExport1.FileName = "sample.txt";
	txtExport1.SaveToFile();
}

Private Sub btnText_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnText.Click
    Dim oleDbConnection1 As New System.Data.OleDb.OleDbConnection()
    oleDbConnection1.ConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=..\..\..\..\Database\demo.mdb"

    Dim oleDbCommand1 As New System.Data.OleDb.OleDbCommand()
    oleDbCommand1.CommandText = "select * from parts"
    oleDbCommand1.Connection = oleDbConnection1

    Dim txtExport1 As New Spire.DataExport.TXT.TXTExport()

    txtExport1.ActionAfterExport = Spire.DataExport.Common.ActionType.OpenView
    txtExport1.DataFormats.CultureName = "zh-CN"
    txtExport1.DataFormats.Currency = "c"
    txtExport1.DataFormats.DateTime = "yyyy-M-d H:mm"
    txtExport1.DataFormats.Float = "g"
    txtExport1.DataFormats.[Integer] = "g"
    txtExport1.DataFormats.Time = "H:mm"
    txtExport1.DataEncoding = Spire.DataExport.Common.EncodingType.ASCII
    txtExport1.SQLCommand = oleDbCommand1

    oleDbConnection1.Open()

    txtExport1.ExportType = Spire.DataExport.TXT.TextExportType.SYLK
    txtExport1.FileName = "sample.slk"
    txtExport1.SaveToFile()

    txtExport1.ExportType = Spire.DataExport.TXT.TextExportType.CSV
    txtExport1.FileName = "sample.csv"
    txtExport1.SaveToFile()

    txtExport1.ExportType = Spire.DataExport.TXT.TextExportType.DIF
    txtExport1.FileName = "sample.dif"
    txtExport1.SaveToFile()

    txtExport1.ExportType = Spire.DataExport.TXT.TextExportType.TXT
    txtExport1.FileName = "sample.txt"
    txtExport1.SaveToFile()
End Sub

The sample demonstrates how to set text style in Word document.

private void button1_Click(object sender, EventArgs e)
{
    //Create word document
    Document document = new Document();

    //Create a new secition
    Section section = document.AddSection();

    //Create a new paragraph
    Paragraph paragraph = section.AddParagraph();

    //Append Text
    paragraph.AppendText("The various ways to format paragraph text in Microsoft Word:");

    paragraph.ApplyStyle(BuiltinStyle.Heading1);

    //Append alignment text
    AppendAligmentText(section);

    //Append indentation text
    AppendIndentationText(section);

    AppendBulletedList(section);

    //Save doc file.
    document.SaveToFile("Sample.doc",FileFormat.Doc);

    //Launching the MS Word file.
    WordDocViewer("Sample.doc");


}

private void AppendAligmentText(Section section)
{
    Paragraph paragraph = null;

    paragraph = section.AddParagraph();

    //Append Text
    paragraph.AppendText("Horizontal Aligenment");

    paragraph.ApplyStyle(BuiltinStyle.Heading3);

    foreach (Spire.Doc.Documents.HorizontalAlignment align in Enum.GetValues(typeof(Spire.Doc.Documents.HorizontalAlignment)))
    {
        Paragraph paramgraph = section.AddParagraph();
        paramgraph.AppendText("This text is " + align.ToString());
        paramgraph.Format.HorizontalAlignment = align;
    }
}

private void AppendIndentationText(Section section)
{
    Paragraph paragraph = null;

    paragraph = section.AddParagraph();

    //Append Text
    paragraph.AppendText("Indentation");

    paragraph.ApplyStyle(BuiltinStyle.Heading3);

    paragraph = section.AddParagraph();
    paragraph.AppendText("Indentation is the spacing between text and margins. Word allows you to set left and right margins, as well as indentations for the first line of a paragraph and hanging indents");
    paragraph.Format.FirstLineIndent = 15;
}

private void AppendBulletedList(Section section)
{
    Paragraph paragraph = null;

    paragraph = section.AddParagraph();
    

    //Append Text
    paragraph.AppendText("Bulleted List");

    paragraph.ApplyStyle(BuiltinStyle.Heading3);

    paragraph = section.AddParagraph();
    for (int i = 0; i < 5; i++)
    {
        paragraph = section.AddParagraph();
        paragraph.AppendText("Item" + i.ToString());

        if (i == 0)
        {
            paragraph.ListFormat.ApplyBulletStyle();
        }
        else
        {
            paragraph.ListFormat.ContinueListNumbering();
        }

        paragraph.ListFormat.ListLevelNumber = 1;
    }
}





private void WordDocViewer(string fileName)
{
    try
    {
        System.Diagnostics.Process.Start(fileName);
    }
    catch { }
}

Private Sub button1_Click(ByVal sender As Object, ByVal e As EventArgs) Handles button1.Click
	'Create word document
	Dim document_Renamed As New Document()

	'Create a new secition
	Dim section_Renamed As Section = document_Renamed.AddSection()

	'Create a new paragraph
	Dim paragraph_Renamed As Paragraph = section_Renamed.AddParagraph()

	'Append Text
	paragraph_Renamed.AppendText("The various ways to format paragraph text in Microsoft Word:")

	paragraph_Renamed.ApplyStyle(BuiltinStyle.Heading1)

	'Append alignment text
	AppendAligmentText(section_Renamed)

	'Append indentation text
	AppendIndentationText(section_Renamed)

	AppendBulletedList(section_Renamed)

	'Save doc file.
	document_Renamed.SaveToFile("Sample.doc",FileFormat.Doc)

	'Launching the MS Word file.
	WordDocViewer("Sample.doc")


End Sub

Private Sub AppendAligmentText(ByVal section_Renamed As Section)
	Dim paragraph_Renamed As Paragraph = Nothing

	paragraph_Renamed = section_Renamed.AddParagraph()

	'Append Text
	paragraph_Renamed.AppendText("Horizontal Aligenment")

	paragraph_Renamed.ApplyStyle(BuiltinStyle.Heading3)

	For Each align As Spire.Doc.Documents.HorizontalAlignment In System.Enum.GetValues(GetType(Spire.Doc.Documents.HorizontalAlignment))
		Dim paramgraph As Paragraph = section_Renamed.AddParagraph()
		paramgraph.AppendText("This text is " & align.ToString())
		paramgraph.Format.HorizontalAlignment = align
	Next align
End Sub

Private Sub AppendIndentationText(ByVal section_Renamed As Section)
	Dim paragraph_Renamed As Paragraph = Nothing

	paragraph_Renamed = section_Renamed.AddParagraph()

	'Append Text
	paragraph_Renamed.AppendText("Indentation")

	paragraph_Renamed.ApplyStyle(BuiltinStyle.Heading3)

	paragraph_Renamed = section_Renamed.AddParagraph()
	paragraph_Renamed.AppendText("Indentation is the spacing between text and margins. Word allows you to set left and right margins, as well as indentations for the first line of a paragraph and hanging indents")
	paragraph_Renamed.Format.FirstLineIndent = 15
End Sub

Private Sub AppendBulletedList(ByVal section_Renamed As Section)
	Dim paragraph_Renamed As Paragraph = Nothing

	paragraph_Renamed = section_Renamed.AddParagraph()


	'Append Text
	paragraph_Renamed.AppendText("Bulleted List")

	paragraph_Renamed.ApplyStyle(BuiltinStyle.Heading3)

	paragraph_Renamed = section_Renamed.AddParagraph()
	For i As Integer = 0 To 4
		paragraph_Renamed = section_Renamed.AddParagraph()
		paragraph_Renamed.AppendText("Item" & i.ToString())

		If i = 0 Then
			paragraph_Renamed.ListFormat.ApplyBulletStyle()
		Else
			paragraph_Renamed.ListFormat.ContinueListNumbering()
		End If

		paragraph_Renamed.ListFormat.ListLevelNumber = 1
	Next i
End Sub





Private Sub WordDocViewer(ByVal fileName As String)
	Try
		Process.Start(fileName)
	Catch
	End Try
End Sub

		private void ExcelDocViewer( string fileName )
		{
			try
			{
				System.Diagnostics.Process.Start(fileName);
			}
			catch{}
		}

		private void btnRun_Click(object sender, System.EventArgs e)
		{
			Workbook workbook = new Workbook();
			Worksheet sheet = workbook.Worksheets[0];

			sheet.Range["B1"].Text = "Text Align";
                        sheet.Range["B1"].Style.Font.IsBold = true;

			sheet.Range["B3"].Text = "Top";
			sheet.Range["B3"].Style.VerticalAlignment = VerticalAlignType.Top;

			sheet.Range["B4"].Text = "Center";
			sheet.Range["B4"].Style.VerticalAlignment = VerticalAlignType.Center;

			sheet.Range["B5"].Text = "Bottom";
			sheet.Range["B5"].Style.VerticalAlignment = VerticalAlignType.Bottom;

			sheet.Range["B6"].Text = "General";
			sheet.Range["B6"].Style.HorizontalAlignment = HorizontalAlignType.General;

			sheet.Range["B7"].Text = "Left";
			sheet.Range["B7"].Style.HorizontalAlignment = HorizontalAlignType.Left;

			sheet.Range["B8"].Text = "Center";
			sheet.Range["B8"].Style.HorizontalAlignment = HorizontalAlignType.Center;

			sheet.Range["B9"].Text = "Right";
			sheet.Range["B9"].Style.HorizontalAlignment = HorizontalAlignType.Right;

			sheet.Range["B10"].Text = "Rotation 90 degree";
			sheet.Range["B10"].Style.Rotation = 90;

			sheet.Range["B11"].Text = "Rotation 45 degree";
			sheet.Range["B11"].Style.Rotation = 45;


			sheet.AllocatedRange.AutoFitColumns();
			sheet.Range["B3:B5"].RowHeight = 20;
		
			workbook.SaveToFile("Sample.xls");
			ExcelDocViewer(workbook.FileName);
		}

		Private Sub ExcelDocViewer(ByVal fileName As String)
			Try
				System.Diagnostics.Process.Start(fileName)
			Catch
			End Try
		End Sub

		Private Sub btnRun_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnRun.Click
			Dim workbook As Workbook = New Workbook()
			Dim sheet As Worksheet = workbook.Worksheets(0)

			sheet.Range("B1").Text = "Text Align"
			sheet.Range("B1").Style.Font.IsBold = True

			sheet.Range("B3").Text = "Top"
			sheet.Range("B3").Style.VerticalAlignment = VerticalAlignType.Top

			sheet.Range("B4").Text = "Center"
			sheet.Range("B4").Style.VerticalAlignment = VerticalAlignType.Center

			sheet.Range("B5").Text = "Bottom"
			sheet.Range("B5").Style.VerticalAlignment = VerticalAlignType.Bottom

			sheet.Range("B6").Text = "General"
			sheet.Range("B6").Style.HorizontalAlignment = HorizontalAlignType.General

			sheet.Range("B7").Text = "Left"
			sheet.Range("B7").Style.HorizontalAlignment = HorizontalAlignType.Left

			sheet.Range("B8").Text = "Center"
			sheet.Range("B8").Style.HorizontalAlignment = HorizontalAlignType.Center

			sheet.Range("B9").Text = "Right"
			sheet.Range("B9").Style.HorizontalAlignment = HorizontalAlignType.Right

			sheet.Range("B10").Text = "Rotation 90 degree"
			sheet.Range("B10").Style.Rotation = 90

			sheet.Range("B11").Text = "Rotation 45 degree"
			sheet.Range("B11").Style.Rotation = 45


			sheet.AllocatedRange.AutoFitColumns()
			sheet.Range("B3:B5").RowHeight = 20

			workbook.SaveToFile("Sample.xls")
			ExcelDocViewer(workbook.FileName)
		End Sub