title: Is ASP.NET Ajax Control Toolkit MaskedEdit Broken in IE9?
body: <p>I've just found that an ASP.NET Ajax Control Toolkit <a href="http://www.asp.net/ajax/ajaxcontroltoolkit/Samples/MaskedEdit/MaskedEdit.aspx" rel="nofollow"><code>MaskedEditExtender</code></a> isn't working in one of my old web applications.</p>
  
  <p>My usage:</p>
  
  <pre><code>&lt;asp:TextBox
      ID="TextBoxProductPrice"
      runat="server"
      CssClass="TextBoxProductPrice" /&gt;
  &lt;ajaxToolkit:MaskedEditExtender
      ID="MaskedEditExtenderTextBoxProductPrice"
      runat="server"
      TargetControlID="TextBoxProductPrice"
      Mask="9,999.99"
      MaskType="Number"
      MessageValidatorTip="False"
      OnFocusCssClass="MaskedEditFocus"
      OnInvalidCssClass="MaskedEditError"
      InputDirection="RightToLeft"
      AcceptNegative="None"
      DisplayMoney="Left" /&gt;
  &lt;ajaxToolkit:MaskedEditValidator
      ID="MaskedEditValidatorTextBoxProductPrice"
      runat="server"
      ControlToValidate="TextBoxProductPrice"
      ControlExtender="MaskedEditExtenderTextBoxProductPrice"
      Display="Dynamic"
      IsValidEmpty="False"
      EmptyValueMessage="Price is required"
      InvalidValueMessage="Price is invalid"
      MinimumValue= "0.01"
      MinimumValueMessage="Price is too small"
      MaximumValue="9999.99" 
      MaximumValueMessage="Price is too large" /&gt;
  </code></pre>
  
  <p>There is no error. It just doesn't accept keystrokes correctly.</p>
  
  <p>It fails with both Internet Explorer 9 and Chrome 12 on Windows 7.</p>
  
  <p>It works correctly with Internet Explorer 6 on Windows XP.</p>
  
  <p>Is the ASP.NET AJAX Control Toolkit incompatible with modern browsers?</p>