ASP.NET Export Database to Excel Report/Print Format (Excel Application)

Dim xlApp As New Excel.Application

<%@ Import Namespace="System.Data"%>
<%@ Import Namespace="System.Data.OleDb"%>
<%@ Import Namespace="Excel"%>
<%@ Import Namespace="System.IO"%>
<%@ Page Language="VB" %>
<script runat="server">

    Sub Page_Load(sender As Object, e As EventArgs)		
        Dim objConn As New OleDbConnection
		Dim dtAdapter As OleDbDataAdapter 
		Dim dt As New System.Data.DataTable       
       
		Dim strConnString As String
		strConnString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source="&Server.MapPath("database/mydatabase.mdb")&";"
		objConn = New OleDbConnection(strConnString)
		objConn.Open()

		Dim strSQL As String		
		strSQL = "SELECT * FROM customer"
		
		'*** Create DataTable ***'	
		dtAdapter = New OleDbDataAdapter(strSQL, objConn)
		dtAdapter.Fill(dt)
		
		'*** Export To Excel ***'
        Dim FileName As String
        FileName = "MyXls/MyExcel.xls"

        '*** Create Excel.Application ***'
        Dim xlApp As New Excel.Application
        Dim xlSheet1 As Excel.Worksheet
        Dim xlBook As Excel.Workbook	
		Dim i As Integer
		Dim intRows As Integer

		xlBook = xlApp.Workbooks.Add()
		xlBook.Application.Visible = False

        '*** Create Sheet 1 ***'
        xlSheet1 = xlBook.Worksheets(1)
        xlSheet1.Name = "My Sheet1"

		'*** Width & Height (A1:A1) ***'
		With xlApp.ActiveSheet.Range("A1:A1")
			.ColumnWidth = 10.0
		End With
		With xlApp.ActiveSheet.Range("B1:B1")
			.ColumnWidth = 13.0
		End With
		With xlApp.ActiveSheet.Range("C1:C1")
			.ColumnWidth = 23.0
		End With
		With xlApp.ActiveSheet.Range("D1:D1")
			.ColumnWidth = 12.0
		End With
		With xlApp.ActiveSheet.Range("E1:E1")
			.ColumnWidth = 13.0
		End With
		With xlApp.ActiveSheet.Range("F1:F1")
			.ColumnWidth = 12.0
		End With

		With xlApp.ActiveSheet.Range("A1:F1")
			.BORDERS.Weight = 1
			.MergeCells = True
			.Font.Bold = True
			.Font.Size = 20
			.HorizontalAlignment = -4108
		End With
			With xlApp.ActiveSheet.Cells(1,1)
			.Value = "Customer Report"
		End With

		'*** Header ***'
		With xlApp.ActiveSheet.Cells(2,1)
			.Value = "CustomerID"
			.Font.Bold = True
			.VerticalAlignment = -4108
			.HorizontalAlignment = -4108
			.BORDERS.Weight = 1
		End With
		With xlApp.ActiveSheet.Cells(2,2)
			.Value = "Name"
			.Font.Bold = True
			.VerticalAlignment = -4108
			.HorizontalAlignment = -4108
			.BORDERS.Weight = 1
		End With
		With xlApp.ActiveSheet.Cells(2,3)
			.Value = "Email"
			.Font.Bold = True
			.VerticalAlignment = -4108
			.HorizontalAlignment = -4108
			.BORDERS.Weight = 1
		End With
		With xlApp.ActiveSheet.Cells(2,4)
			.Value = "CountryCode"
			.Font.Bold = True
			.VerticalAlignment = -4108
			.HorizontalAlignment = -4108
			.BORDERS.Weight = 1
		End With
		With xlApp.ActiveSheet.Cells(2,5)
			.Value = "Budget"
			.Font.Bold = True
			.VerticalAlignment = -4108
			.HorizontalAlignment = -4108
			.BORDERS.Weight = 1
		End With
		With xlApp.ActiveSheet.Cells(2,6)
			.Value = "Used"
			.Font.Bold = True
			.VerticalAlignment = -4108
			.HorizontalAlignment = -4108
			.BORDERS.Weight = 1
		End With
		'***********'

		intRows = 3
		For i = 0 To dt.Rows.Count - 1
			'*** Detail ***'
			With xlApp.ActiveSheet.Cells(intRows,1)
				.Value = dt.Rows(i)("CustomerID")
				.BORDERS.Weight = 1
				.HorizontalAlignment = -4108
			End With
			With xlApp.ActiveSheet.Cells(intRows,2)
				.Value = dt.Rows(i)("Name")
				.BORDERS.Weight = 1
			End With
			With xlApp.ActiveSheet.Cells(intRows,3)
				.Value = dt.Rows(i)("Email")
				.BORDERS.Weight = 1
			End With
			With xlApp.ActiveSheet.Cells(intRows,4)
				.Value = dt.Rows(i)("CountryCode")
				.HorizontalAlignment = -4108
				.BORDERS.Weight = 1
			End With
			With xlApp.ActiveSheet.Cells(intRows,5)
				.Value = FormatNumber(dt.Rows(i)("Budget"),2)
				.BORDERS.Weight = 1
			End With
			With xlApp.ActiveSheet.Cells(intRows,6)
				.Value = FormatNumber(dt.Rows(i)("Used"),2)
				.BORDERS.Weight = 1
			End With
			intRows = intRows + 1
		Next
	
        '*** If Files Already Exist Delete files ***'
		Dim MyFile As New FileInfo(Server.MapPath(FileName))
		If MyFile.Exists Then
			MyFile.Delete()
		End IF
		MyFile = Nothing

        '*** Save Excel ***'
        'xlSheet1.PrintOut 1 '*** Print to printer ***'
        xlSheet1.SaveAs(Server.MapPath(FileName))
        xlApp.Quit()

        '*** Quit and Clear Object ***'
        xlSheet1 = Nothing
        xlBook = Nothing
        xlApp = Nothing

		'*** End Export To Excel ***'

		Me.lblText.Text = "Excel Created <a href="& FileName & ">Click here</a> to Download."

		dtAdapter = Nothing
		objConn.Close()
		objConn = Nothing

	End Sub


</script>
<html>
<head>
<title>ThaiCreate.Com ASP.NET - Excel Application</title>
</head>
<body>
	<form id="form1" runat="server">	
	<asp:Label id="lblText" runat="server"></asp:Label>
	</form>
</body>
</html>