protected void LinkButton1_Click(object sender, EventArgs e)
{
string Extension = System.IO.Path.GetExtension(FileUpload1.PostedFile.FileName);


/* Here i am checkin for gif,jpg and bmp files only */


/*Checks whether the type of the selected file is present in the list */

if (".gif.jpg.bmp".ToUpper().IndexOf(Extension.ToUpper()) < 0)
{
return;
}


FileUpload1.SaveAs(Server.MapPath("Uploads") + "/" + FileUpload1.FileName);

Table1.DataBind();
}