Dataset To Excel Export Function

The Function:

Public Sub ExportDatasetToExcel(ByVal ds As DataSet, ByVal strExcelFile As String)

    Dim conn As New OleDbConnection(String.Format("provider=Microsoft.Jet.OLEDB.4.0; Data Source='{0}';" & "Extended Properties='Excel 8.0;HDR=YES;'", strExcelFile))
    conn.Open()

    Dim strTableQ(ds.Tables.Count) As String

    Dim i As Integer = 0

    'making table query
    For i = 0 To ds.Tables.Count - 1

        strTableQ(i) = "CREATE TABLE [" & ds.Tables(i).TableName & "]("

        Dim j As Integer = 0
        For j = 0 To ds.Tables(i).Columns.Count - 1
            Dim dCol As DataColumn
            dCol = ds.Tables(i).Columns(j)
            strTableQ(i) &= " [" & dCol.ColumnName & "] varchar(255) , "
        Next
        strTableQ(i) = strTableQ(i).Substring(0, strTableQ(i).Length - 2)
        strTableQ(i) &= ")"

        Dim cmd As New OleDbCommand(strTableQ(i), conn)
        cmd.ExecuteNonQuery()

    Next

    'making insert query
    Dim strInsertQ(ds.Tables.Count - 1) As String
    For i = 0 To ds.Tables.Count - 1
        strInsertQ(i) = "Insert Into " & ds.Tables(i).TableName & " Values ("
        For k As Integer = 0 To ds.Tables(i).Columns.Count - 1
            strInsertQ(i) &= "@" & ds.Tables(i).Columns(k).ColumnName & " , "
        Next
        strInsertQ(i) = strInsertQ(i).Substring(0, strInsertQ(i).Length - 2)
        strInsertQ(i) &= ")"
    Next

    'Now inserting data
    For i = 0 To ds.Tables.Count - 1
        For j As Integer = 0 To ds.Tables(i).Rows.Count - 1
            Dim cmd As New OleDbCommand(strInsertQ(i), conn)
            For k As Integer = 0 To ds.Tables(i).Columns.Count - 1
                cmd.Parameters.AddWithValue("@" & ds.Tables(i).Columns(k).ColumnName.ToString(), ds.Tables(i).Rows(j)(k).ToString())
            Next
            cmd.ExecuteNonQuery()
            cmd.Parameters.Clear()

        Next
    Next
End Sub

Let’s say i have my.xls in D drive. i want to export a Dataset Name dsFinal to this excel file.
Use:

ExportDatasetToExcel(dsFinal, “d:\my.xls”)

 

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