asp.net

Question

how to avoid page refersh  on clicking  alert msg ok button 

 

 

code is here

 

protected void btnSend_Click(object sender, EventArgs e)

{

try

{

int intResult = 0;

objBLLCommon = new BLLCommon();

intResult = objBLLCommon.SendingMail(txtToMailId.Text, "", hdnEmailSubject.Value.ToString(), Server.MapPath(hdnEmailFilePath.Value).ToString());

if (intResult > 0)

{

//here is alert msg  on clicking ok i dont neeed page  refersh bcoz i lost data  

Response.Write("<script>alert('Email Sent Successfully.'); </script>");

if (File.Exists(hdnEmailFilePath.Value))

{

File.Delete(Server.MapPath(hdnEmailFilePath.Value));

// rptDoc.ExportToDisk(CrystalDecisions.Shared.ExportFormatType.PortableDocFormat, Server.MapPath(hdnEmailFilePath.Value));

hdnEmailFlag.Value = "1";

}

}

else

{

Response.Write("<script>alert('Error Occured. Please try again.');</script>");

if (File.Exists(hdnEmailFilePath.Value))

{

File.Delete(Server.MapPath(hdnEmailFilePath.Value));

//rptDoc.ExportToDisk(CrystalDecisions.Shared.ExportFormatType.PortableDocFormat, Server.MapPath(hdnEmailFilePath.Value));

hdnEmailFlag.Value = "1";

}

}

}