Getting Exception when excel export More than 5 Lakhs Record ?

Question

Hi All,

 

I am facing issue when I try to export more than 5 Lakh Records in Asp.Net Excel Export. I am getting

 

Exception of type 'System.OutOfMemoryException' was thrown.

 

The above exception. If anyone knows for the solution, Suggest me with Sample Code.

 

Code which i used :

//Create a dummy GridView
GridView GridView1 = new GridView();
GridView1.ShowFooter = true;
GridView1.AllowPaging = false;
GridView1.DataSource = Dt2;
GridView1.DataBind();
Response.Clear();
Response.Buffer = true;
Response.AddHeader("content-disposition",
"attachment;filename=MemberHistory.xls");
Response.Charset = "";
Response.ContentType = "application/vnd.ms-excel";
StringWriter sw = new StringWriter();
HtmlTextWriter hw = new HtmlTextWriter(sw);
for (int i = 0; i < GridView1.Rows.Count; i++)
{
//Apply text style to each Row
GridView1.Rows[i].Attributes.Add("class", "textmode");
}
GridView1.RenderControl(hw);
//style to format numbers to string
string style = @"<style> TD { mso-number-format:\@; } </style>";
Response.Write(style);
Response.Output.Write(sw.ToString());
Response.Flush();
Response.End();

Thanks in advance

 

Karthik K