Exporting data from datagrid to excel

DataGrid Dg = new DataGrid();

Dg.HeaderStyle.Font.Bold=true;

Dg.HeaderStyle.ForeColor=Color.Blue;

Dg.DataSource = DSCustRepFormsListExcel;

Dg.DataBind();

Response.Clear();

Response.Buffer= true;

Response.ContentType = "application/vnd.ms-excel";

string fileName = "CustomReportsForms.xls";

Response.AddHeader("Content-Disposition","FileName=" +fileName);

Response.ContentEncoding = System.Text.Encoding.UTF7;

Response.Charset = "";

EnableViewState = false;

System.IO.StringWriter oStringWriter = new System.IO.StringWriter();

System.Web.UI.HtmlTextWriter oHtmlTextWriter = new System.Web.UI.HtmlTextWriter(oStringWriter);

Dg.RenderControl(oHtmlTextWriter);

Response.Write(oStringWriter.ToString());

Dg.Dispose();

Response.End();