protected void btnLoad_Click(object sender, EventArgs e) { Session["ColumnNames"] = msSqlHelper.GetTableColumns(txtConnectionString.Text, drpTables.SelectedItem.Text); string excelName = Session["fileName"].ToString(); DataSet ds = excelHelper.GetSheetData(excelName, drpSheets.SelectedItem.Text); lstLeadsData.DataSource = ds.Tables["ExcelFileData"]; lstLeadsData.DataBind(); }