increase speed to export datagridview to excel

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I have to export datagridview in excel. It take too time to export if data increases.
If data is above 500-700 records.

VB

If flg = True Then
                    If txtflnm.Text <> "" Then
                    Dim xlApp As Excel.Application
                    Dim xlWorkBook As Excel.Workbook
                    Dim xlWorkSheet As Excel.Worksheet
                    Dim misValue As Object = System.Reflection.Missing.Value
                    Dim i, j As Integer
                    Dim p, q As Integer
                    xlApp = New Excel.ApplicationClass
                    xlWorkBook = xlApp.Workbooks.Add(misValue)
                    xlWorkSheet = xlWorkBook.Sheets("sheet1")
                    p = 1
                    For i = 0 To DataGridView2.RowCount - 1
                        'If DataGridView2.Item(0, i).Value = True Then
                        For j = 0 To DataGridView2.ColumnCount - 1
                            q = j + 1
                            If DataGridView2.Columns(j).Visible = True Then
                                If Convert.ToString(DataGridView2(j, i).Value)<> Nothing Then
                                    If j = 14 Or j = 18 Then
                                        If DataGridView2(j, i).Value.ToString() = True Then
                                            xlWorkSheet.Cells(p + 1, q) = "Yes"
                                        Else
                                            xlWorkSheet.Cells(p + 1, q) = "No"
                                        End If
                                    Else
                                        xlWorkSheet.Cells(p + 1, q) = DataGridView2(j, i).Value.ToString()
                                    End If
                                End If
                            End If
                        Next
                        p = p + 1
                        'End If
                    Next

                    xlWorkBook.SaveAs(txtflnm.Text, Excel.XlFileFormat.xlWorkbookNormal, misValue, misValue, misValue, misValue, Excel.XlSaveAsAccessMode.xlExclusive, misValue, misValue, misValue, misValue, misValue)
                    xlWorkBook.Close(True, misValue, misValue)
                    xlApp.Quit()
                    releaseObject(xlWorkSheet)
                    releaseObject(xlWorkBook)
                    releaseObject(xlApp)
                    MessageBox.Show("Data exported")

This is my code.
is there any shortcut to export that data????

Posted 3-Dec-12 19:42pm

dcba1

Updated 3-Dec-12 20:44pm

Tadit Dash (ତଡିତ୍ କୁମାର ଦାଶ)

v2

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Comments

yaser shadmehr 4-Dec-12 3:32am

format of exported file, is important for you? should it be .xlsx or not?

2 solutions

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AnkitGoel.com · Answer 1 · 2012-12-06T20:05:00

use this code, this works much faster.

VB

For _Rows = 0 To _DSclip.Tables(T).Rows.Count - 1
                   _xlSheet1.Range("a" & XlRow).Offset(_Rows).Resize(1, _Cols).Value = _DSclip.Tables(T).Rows(_Rows).ItemArray()
               Next

It writes data row by row.
Please mark as answer if worked.

Kuthuparakkal · Answer 2 · 2012-12-04T14:41:00

Solution 2

Try to iterate in a different way :

VB

For Each row As DataGridViewRow In Me. DataGridView2.Rows

    If row("SomeColumn").Visible = True Then
    ---do something ---
    End If
---do something
Next

Posted 4-Dec-12 14:41pm

Kuthuparakkal