ASP.NET Export n GridViews to Excel
//Web Page Call to ExcelExport Class
protected void lnkExport_Click(object sender, EventArgs e)
{
//creating the array of GridViews and calling the Export function
GridView[] gvList = new GridView[] { gvPlateList, gvPlateDetails };
ExcelExport.Export("DeliverySheet.xls", gvList);
}
//ExcelExport Class
using System;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
///<summary>
/// Summary description for ExcelExport
///</summary>
public static class ExcelExport
{
public static void Export(string fileName, GridView[] gvs)
{
HttpContext.Current.Response.Clear();
HttpContext.Current.Response.AddHeader("content-disposition", string.Format("attachment; filename={0}", fileName));
HttpContext.Current.Response.ContentType = "application/ms-excel";
System.IO.StringWriter sw = new System.IO.StringWriter();
HtmlTextWriter htw = new HtmlTextWriter(sw);
foreach (GridView gv in gvs)
{
// Create a form to contain the grid
Table table = new Table();
table.GridLines = gv.GridLines;
// add the header row to the table
if (!(gv.HeaderRow == null))
{
PrepareControlForExport(gv.HeaderRow);
table.Rows.Add(gv.HeaderRow);
}
// add each of the data rows to the table
foreach (GridViewRow row in gv.Rows)
{
PrepareControlForExport(row);
table.Rows.Add(row);
}
// add the footer row to the table
if (!(gv.FooterRow == null))
{
PrepareControlForExport(gv.FooterRow);
table.Rows.Add(gv.FooterRow);
}
// render the table into the htmlwriter
table.RenderControl(htw);
}
// render the htmlwriter into the response
HttpContext.Current.Response.Write(sw.ToString());
HttpContext.Current.Response.End();
}
private static void PrepareControlForExport(Control control)
{
for (int i = 0; i < control.Controls.Count; i++)
{
Control current = control.Controls[i];
if (current is LinkButton)
{
control.Controls.Remove(current);
control.Controls.AddAt(i, new LiteralControl((current as LinkButton).Text));
}
else if (current is ImageButton)
{
control.Controls.Remove(current);
control.Controls.AddAt(i, new LiteralControl((current as ImageButton).AlternateText));
}
else if (current is HyperLink)
{
control.Controls.Remove(current);
control.Controls.AddAt(i, new LiteralControl((current as HyperLink).Text));
}
else if (current is DropDownList)
{
control.Controls.Remove(current);
control.Controls.AddAt(i, new LiteralControl((current as DropDownList).SelectedItem.Text));
}
else if (current is CheckBox)
{
control.Controls.Remove(current);
control.Controls.AddAt(i, new LiteralControl((current as CheckBox).Checked ? "True" : "False"));
}
if (current.HasControls())
{
PrepareControlForExport(current);
}
}
}
}