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POValidation not working for ImageButton click
 

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  1. POValidation not working for ImageButton click
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    <p>I have an image button for login in my system. so as the most common thing i m having two text boxes <code>txt_username</code> and <code>txt_password</code>. i have put required field validator for both the text boxes. and set the validation group "a" and respective control to validate for both of them. the source code for my ImageButton is as follows:-</p> <pre><code>&lt;td align="right" class="simple_text"&gt;&amp;nbsp;&lt;/td&gt; &lt;td align="left"&gt; &lt;asp:ImageButton ID="ImageButton1" runat="server" CausesValidation="true" ImageUrl="~/images/signin_button.gif" onclick="ImageButton1_Click" ValidationGroup="a" /&gt; &lt;/td&gt; </code></pre> <p>now I am fed up as when I run my application and click the ImageButton it doesn't respond to the validation at all and redirects to the next page. Can anyone say why is it so? this is the first time wherein the validators are not working.</p> <p>this is source code:-</p> <pre><code>&lt;td align="left"&gt;&lt;table width="480" border="0" cellspacing="0" cellpadding="0"&gt; &lt;tr&gt; &lt;td width="178" align="right" class="simple_text"&gt;User Name :&amp;nbsp;&lt;/td&gt; &lt;td width="302" align="left"&gt; &amp;nbsp;&lt;asp:TextBox ID="txt_username" runat="server" CssClass="text_box_username" Width="180px" AutoPostBack="True" ontextchanged="txt_username_TextChanged" ValidationGroup="a" CausesValidation="True"&gt;&lt;/asp:TextBox&gt; &lt;asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server" ControlToValidate="txt_username" ErrorMessage="RequiredFieldValidator" ValidationGroup="a"&gt;**&lt;/asp:RequiredFieldValidator&gt; &lt;/td&gt; &lt;/tr&gt; &lt;tr&gt; &lt;td align="right" class="simple_text"&gt;&amp;nbsp;&lt;/td&gt; &lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt; &lt;/tr&gt; &lt;tr&gt; &lt;td align="right" class="simple_text"&gt;Password :&amp;nbsp;&lt;/td&gt; &lt;td align="left"&gt; &lt;asp:TextBox ID="txt_password" runat="server" CssClass="text_box_password" TextMode="Password" Width="180px" ValidationGroup="a" CausesValidation="True"&gt;&lt;/asp:TextBox&gt; &lt;asp:RequiredFieldValidator ID="RequiredFieldValidator2" runat="server" ControlToValidate="txt_password" ErrorMessage="RequiredFieldValidator" ValidationGroup="a"&gt;**&lt;/asp:RequiredFieldValidator&gt; &lt;/td&gt; &lt;/tr&gt; &lt;tr&gt; &lt;td align="right" class="simple_text"&gt;&amp;nbsp;&lt;/td&gt; &lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt; &lt;/tr&gt; &lt;tr&gt; &lt;td align="right" class="simple_text"&gt;&amp;nbsp;&lt;/td&gt; &lt;td align="left"&gt; &lt;asp:ImageButton ID="ImageButton1" runat="server" CausesValidation="true" ImageUrl="~/images/signin_button.gif" onclick="ImageButton1_Click" ValidationGroup="a" /&gt; &lt;/td&gt; &lt;/tr&gt; &lt;/table&gt;&lt;/td&gt; &lt;/tr&gt; &lt;tr&gt; &lt;td align="left"&gt;&amp;nbsp;&lt;/td&gt; &lt;/tr&gt; &lt;tr&gt; </code></pre>
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