Asp.Net End date greater than start date
<p>Work on Asp.Net vs 08.
Below is my code</p>

<pre><code>&lt;asp:TextBox ID="txtSTART_DATE" runat="server"&gt;&lt;/asp:TextBox&gt;
     &lt;cc1:PopupControlExtender ID="txtSTART_DATE_PopupControlExtender" runat="server" CommitProperty="value"
            CommitScript="e.value += '';" PopupControlID="pnlSTART_DATE"
            Position="Bottom" TargetControlID="txtSTART_DATE"&gt;
           &lt;/cc1:PopupControlExtender&gt; 

           &lt;asp:TextBox ID="txtEND_DATE" runat="server" 
        ontextchanged="txtEND_DATE_TextChanged"&gt;&lt;/asp:TextBox&gt;
     &lt;cc1:PopupControlExtender ID="txtEND_DATE_PopupControlExtender" runat="server" CommitProperty="value"
            CommitScript="e.value += '';" PopupControlID="pnlEND_DATE"
            Position="Bottom" TargetControlID="txtEND_DATE"&gt;
           &lt;/cc1:PopupControlExtender&gt; 
</code></pre>

<p>C# syntax is </p>

<pre><code>protected void dtpSTART_DATE_SelectionChanged(object sender, EventArgs e)
{
  AjaxControlToolkit.PopupControlExtender.GetProxyForCurrentPopup(this.Page).Commit(dtpSTART_DATE.SelectedDate.ToString("dd MMM yyyy"));//Set the value
}

protected void dtpEND_DATE_SelectionChanged(object sender, EventArgs e)
{
  AjaxControlToolkit.PopupControlExtender.GetProxyForCurrentPopup(this.Page).Commit(dtpEND_DATE.SelectedDate.ToString("dd MMM yyyy"));//Set the value
}
</code></pre>

<p>want to compare start date with the end date.Verify that end date greater than start date and today date.How to check the value?    </p>
