title: Error Provider not showing message and isn't blinking
body: <p>I am working on windows application using C#</p>
  
  <p>I have taken an errorprovider and validating NULL textBox as follows:  </p>
  
  <pre><code>if (textBox1.Text == string.Empty)
  {
      errorProvider1.SetError(textBox1, "Please enter Value");
  }
  </code></pre>
  
  <p>But when I run the program it is only showing icon but no message. It's not even blinking</p>
  
  <p>What should I do?</p>