public static string UploadFile(this System.Web.UI.WebControls.FileUpload file, string directorypath, string filename)
{
if (!file.HasFile)
{
return(null);
}
if (filename.Trim().Length == 0)
{
return(file.UploadFile(directorypath));
}
file.SaveAs(directorypath + filename);
return(filename);
}