exporting data from grid view to excel in windows application

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hello all.
i m exporting data from grid view to excel.
though its working perfectly but its taking too much time to export.
is there any other faster way to export.?
if so please help me.

giving codes.

C#

private void btnExport_Click(object sender, EventArgs e)
        {
            
            Cursor.Current = Cursors.WaitCursor;
            lblWait.Visible = true;

            try
            {
                if (rbAll.Checked == true)
                {
                    filename = "All Record_"+divisionname;
                }
                else
                {
                    filename = divisionname +"-" + dtSearchDate.Value.ToString("d-MM-yyy");
                }
                if (dt.Rows.Count > 0)
                {
                    oXL = new Excel.Application();

                    // Set some properties
                    oXL.Visible = false;
                    oXL.DisplayAlerts = false;

                    // Get a new workbook.
                    oWB = oXL.Workbooks.Add(Missing.Value);

                    // Get the active sheet
                    oSheet = (Excel.Worksheet)oWB.ActiveSheet;
                    oSheet.Name = "Record";

                    int rowCount = 1;
                    foreach (DataRow dr in dt.Rows)
                    {
                        rowCount += 1;
                        for (int i = 1; i < dt.Columns.Count + 1; i++)
                        {
                            // Add the header the first time through
                            if (rowCount == 2)
                            {
                                oSheet.Cells[1, i] = dt.Columns[i - 1].ColumnName;
                            }
                            oSheet.Cells[rowCount, i] = dr[i - 1].ToString();
                        }
                    }

                    SaveFileDialog sfd = new SaveFileDialog();
                    sfd.FileName = filename.ToString();
                    sfd.Filter = "Excel Documents (*.xls)|*.xls";
                    if (sfd.ShowDialog() == DialogResult.OK)
                    {
                        ToCsV(gvDetail, sfd.FileName); // Here gvDetail is your grid view name
                        oXL.Visible = false;
                        MessageBox.Show("Export Complete..!");
                        oXL.Application.Quit();
                        lblWait.Visible = false;

//----close previous process of excel if opened----//
                        foreach (System.Diagnostics.Process process in System.Diagnostics.Process.GetProcessesByName("EXCEL"))
                        {
                            if (process.MainModule.ModuleName.ToUpper().Equals("EXCEL.EXE"))
                            {
                                process.Kill();
                            }
                        }
                    }
                    else
                    {
                        MessageBox.Show("File Not Saved..!");
                        lblWait.Visible = false;
                    }
                }
                else
                {
                    MessageBox.Show("No Record Found To Export..!");
                    lblWait.Visible = false;
                }
            }
            catch
            {
                MessageBox.Show("Export Failed..!");
                clearcontrols();
                lblWait.Visible = false;
            }
        }

thanks in advance

Posted 29-Sep-13 23:50pm

dibyaaryan007

Updated 29-Sep-13 23:53pm

v3

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Surendra Adhikari SA · Answer 1 · 2013-09-30T01:35:00

Found SomeThing For You:

C#

string filename = "DownloadMobileNoExcel.xls";
     System.IO.StringWriter tw = new System.IO.StringWriter();
     System.Web.UI.HtmlTextWriter hw = new System.Web.UI.HtmlTextWriter(tw);
     DataGrid dgGrid = new DataGrid();
     dgGrid.DataSource = dt;
     dgGrid.DataBind();

       //Get the HTML for the control.
       dgGrid.RenderControl(hw);
       //Write the HTML back to the browser.
       //Response.ContentType = application/vnd.ms-excel;
       Response.ContentType = "application/vnd.ms-excel";
   Response.AppendHeader("Content-Disposition", "attachment; filename=" + filename + "");
       this.EnableViewState = false;
       Response.Write(tw.ToString());
       Response.End();