Validation summary AutoUpdate
<p>In my asp.net application, I've tried to use validation summary in my web page.I've controls like</p>

<pre><code>&lt;td&gt;First Name *&lt;/td&gt;
&lt;td&gt;                                                        
    &lt;asp:TextBox ID="txtFirstName" runat="server"&gt;&lt;/asp:TextBox&gt; 
    &lt;div&gt;
        &lt;asp:RequiredFieldValidator ID="reqValStaffFirstName" runat="server" 
                 ErrorMessage="Enter FirstName" Text="*" 
                 ControlToValidate="txtFirstName" Display="Dynamic" 
                 ValidationGroup="valGrpStaffGeneral"&gt;
         &lt;/asp:RequiredFieldValidator&gt;
    &lt;/div&gt;
&lt;/td&gt;
&lt;td&gt;Last Name *&lt;/td&gt; 
&lt;td&gt;
    &lt;asp:TextBox ID="txtLastName" runat="server"&gt;&lt;/asp:TextBox&gt; 
    &lt;div&gt;
        &lt;asp:RequiredFieldValidator ID="reqValStaffLastName" runat="server" 
                 ErrorMessage="Enter LastName" Text="*" 
                 ControlToValidate="txtLastName" Display="Dynamic" 
                 ValidationGroup="valGrpStaffGeneral"&gt;
         &lt;/asp:RequiredFieldValidator&gt;
    &lt;/div&gt;
&lt;/td&gt;
&lt;td&gt;
     &lt;asp:Button Id="btnSave" runat="server" ValidationGroup="valGrpStaffGeneral"&gt;
&lt;td&gt;
</code></pre>

<p>and my validationsummary script is</p>

<pre><code>&lt;asp:ValidationSummary ID="summary1" ShowSummary="true" runat="server" 
         ValidationGroup="valGrpStaffGeneral" DisplayMode="BulletList" /&gt;
</code></pre>

<p>If I click on <code>save</code> button without filling anything in textbox1 and textbox2 its showing validation errors in my validation summary area. If I fill anything in my textboxes and press tab the error(*) disappears automatically, but the error in the validation summary not changing automatically and its displaying until I click on save button, what should I do to make the validation summary change the fixed errors automatically.</p>
