title: Dynamically added RequiredFieldValidator is not working
body: <p>I have linkbutton on its click event which adds one Textbox and RequiredValidator Dynamically.</p>
  
  <pre><code>protected void lnkAdd_Click(object sender, EventArgs e)
  {
  TextBox txt = new TextBox();
  RequiredFieldValidator ReqAuthor = new RequiredFieldValidator();
  
  txt.ID = "txtAuthorName";
  txt.CssClass = "form_3";
  
  ReqAuthor.ID = "ReqAuthor"
  ReqAuthor.SetFocusOnError = true;
  ReqAuthor.EnableClientScript = true;
  ReqAuthor.Enabled = true;
  ReqAuthor.ControlToValidate = txt.ID;
  ReqAuthor.Display = ValidatorDisplay.Dynamic;
  ReqAuthor.ErrorMessage = "Please Enter Author Name.";
  ReqAuthor.Font.Size = 12;
  
  pnlAuthorTextBox.Controls.Add(txt);
  
  pnlAuthorTextBox.Controls.Add(ReqAuthor);
  }
  </code></pre>
  
  <p>In this code No Error i get at runtime. Code runs Smoothly.</p>
  
  <p>Textbox also get created. But RequiredFieldValidator does not seems as working.</p>
  
  <p>Thanks in advance.</p>
  
  <p>Please help</p>