Spire.Doc for .NET (338)
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A signature confirms that the digital document originated from the signer and has not been tampered with during transit. The use of digital signatures eliminates the need for sending paper documents, and reduces the number of the documents that need to be printed, mailed, and stored, saving you time and money. In this article, you will learn how to digitally sign a Word document in C# and VB.NET using Spire.Doc for .NET.
Install Spire.Doc for .NET
To begin with, you need to add the DLL files included in the Spire.Doc for.NET package as references in your .NET project. The DLL files can be either downloaded from this link or installed via NuGet.
PM> Install-Package Spire.Doc
Add a Digital Signature to Word in C#, VB.NET
The steps are as follows.
- Create a Document object.
- Load a Word document using Document.LoadFromFile() method.
- Specify the path and the password of a .pfx certificate.
- Digitally sign the document while saving the document using Document.SaveToFile(string fileName, FileFormat fileFormat, string certificatePath, string securePassword) method. Here are some other methods that you can use to digitally sign a Word document.
- public void SaveToFile(string fileName, FileFormat fileFormat, byte[] certificateData, string securePassword);
- public void SaveToStream(Stream stream, FileFormat fileFormat, byte[] certificateData, string securePassword);
- public void SaveToStream(Stream stream, FileFormat fileFormat, string certificatePath, string securePassword);
- public static byte[] Document.Sign(Stream sourceStream, byte[] certificateData, string securePassword);
- public static byte[] Document.Sign(Stream sourceStream, string certificatePath, string securePassword);
- C#
- VB.NET
using Spire.Doc;
namespace DigitallySignWord
{
class Program
{
static void Main(string[] args)
{
//Create a Document object
Document doc = new Document();
//Load a Word file
doc.LoadFromFile("C:\\Users\\Administrator\\Desktop\\sample.docx");
//Specify the certificate path
string certificatePath = "C:\\Users\\Administrator\\Desktop\\gary.pfx";
//Specify the password of the certificate
string password = "e-iceblue";
//Digitally sign the document while saving it to a .docx file
doc.SaveToFile("AddDigitalSignature.docx", FileFormat.Docx2013, certificatePath, password);
}
}
}
Apply for a Temporary License
If you'd like to remove the evaluation message from the generated documents, or to get rid of the function limitations, please request a 30-day trial license for yourself.
Add checkbox and picture content control to word document in C#
2019-05-29 07:31:42 Written by KoohjiBesides the Combo Box, Text, Date Picker and Drop-Down List content controls, Checkbox and picture content control also are the mostly used content control in word document. Spire.Doc supports to add many kinds of content controls to the word document. This article will show you how to add checkbox and picture content control to word document by Spire.Doc for .NET.
Code snippets of how to add checkbox and picture content control:
using System;
using System.Drawing;
namespace AddCheckbox
{
class Program
{
static void Main(string[] args)
{
//Create a new word document
Document document = new Document();
//Add a section to the document
Section section = document.AddSection();
//Add a document to the section
Paragraph paragraph = section.AddParagraph();
//Add checkbox content control
StructureDocumentTagInline sdt = new StructureDocumentTagInline(document);
paragraph = section.AddParagraph();
sdt = new StructureDocumentTagInline(document);
sdt.CharacterFormat.FontSize = 20;
paragraph.ChildObjects.Add(sdt);
sdt.SDTProperties.SDTType = SdtType.CheckBox;
SdtCheckBox scb = new SdtCheckBox();
sdt.SDTProperties.ControlProperties = scb;
TextRange tr = new TextRange(document);
tr.CharacterFormat.FontName = "MS Gothic";
tr.CharacterFormat.FontSize = 20;
sdt.ChildObjects.Add(tr);
scb.Checked = true;
sdt.SDTProperties.Alias = "CheckoBox";
sdt.SDTProperties.Tag = "Checkbox";
//Add picture content control
paragraph = section.AddParagraph();
sdt = new StructureDocumentTagInline(document);
paragraph.ChildObjects.Add(sdt);
sdt.SDTProperties.ControlProperties = new SdtPicture();
sdt.SDTProperties.Alias = "Picture";
sdt.SDTProperties.Tag = "Picture";
DocPicture pic = new DocPicture(document) { Width = 10, Height = 10 };
pic.LoadImage(Image.FromFile("Logo.jpg"));
sdt.SDTContent.ChildObjects.Add(pic);
document.SaveToFile("Sample.docx", FileFormat.Docx2013);
}
}
}
Effective screenshot after adding checkbox and picture content control to word document:
C# add new text strings after the searched text string in word document
2019-04-04 07:54:55 Written by KoohjiWith Spire.Doc for .NET, we can easily insert new text to word document at exact position, it also supports to insert new text after the certain text strings at many places. This article will show you how to insert new text strings after the searched text string in word document.
using Spire.Doc;
using Spire.Doc.Documents;
using Spire.Doc.Fields;
using System.Drawing;
namespace Word
{
class Program
{
static void Main(string[] args)
{
//load the sample document
Document doc = new Document();
doc.LoadFromFile("Sample.docx", FileFormat.Docx2010);
//find all the text string “New Zealand” from the sample document
TextSelection[] selections = doc.FindAllString("New Zealand", true, true);
int index = 0;
//defines text range
TextRange range = new TextRange(doc);
//insert new text string (NY) after the searched text string
foreach (TextSelection selection in selections)
{
range = selection.GetAsOneRange();
TextRange newrange = new TextRange(doc);
newrange.Text = ("(NY)");
index = range.OwnerParagraph.ChildObjects.IndexOf(range);
range.OwnerParagraph.ChildObjects.Insert(index + 1, newrange);
}
//find and highlight the newly added text string NY
TextSelection[] text2 = doc.FindAllString("NY", false, true);
foreach (TextSelection seletion in text2)
{
seletion.GetAsOneRange().CharacterFormat.HighlightColor = Color.Yellow;
}
//save the document
doc.SaveToFile("Result.docx", FileFormat.Docx2010);
}
}
}
Effective screenshot after adding the text strings to the searched text:
