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