how to save files to server (root folder)

protected void UploadButton_Click(object sender, EventArgs e) {     if(FileUploadControl.HasFile)     {         try         {             if(FileUploadControl.PostedFile.ContentType == "image/jpeg")             {                 if(FileUploadControl.PostedFile.ContentLength < 102400)                 {                     string filename = Path.GetFileName(FileUploadControl.FileName);                     FileUploadControl.SaveAs(Server.MapPath("~/") + filename);                     StatusLabel.Text = "Upload status: File uploaded!";                 }                 else                     StatusLabel.Text = "Upload status: The file has to be less than 100 kb!";             }             else                 StatusLabel.Text = "Upload status: Only JPEG files are accepted!";         }         catch(Exception ex)         {             StatusLabel.Text = "Upload status: The file could not be uploaded. The following error occured: " + ex.Message;         }     } }