protected void goButton_OnClick(object sender, EventArgs e)
 {
     if (publisherIdTextBox.Text != "")
     {
         int  id          = Convert.ToInt32(publisherIdTextBox.Text);
         bool isPublisher = publisherManager.CheckPublisherId(id);
         if (!isPublisher)
         {
             Response.Write("<script>alert('Please Insert Right ID');</script>");
         }
         else
         {
             publisher = publisherManager.GetPublisherName(id);
             publisherNameTextBox.Text = publisher.PublisherName;
             publisherIdTextBox.Text   = publisher.PublisherId.ToString();
         }
     }
     else
     {
         Response.Write("<script>alert('Please Insert Publisher Id');</script>");
     }
 }