title: Show Alert message on button click after saving the data asp.net
body: <p>I want to show a message "Successfully added" after saving the record to the database on button click which already having a JS function for some validation on the data.
  i have tried the following code but nothing is showing.</p>
  
  <pre><code>ScriptManager.RegisterStartupScript(this, typeof(Page), "Alert",
  "&lt;script&gt;alert('" + "Successfully added" + "');&lt;/script&gt;", false);
  </code></pre>
  
  <p>How to show the success message in a popup with at the end save process?</p>