Why is a postback not being triggered?
<p>I have a simple web form, but when I submit the button postback is always false. This should all happen on the same page.</p>

<pre><code>&lt;form runat="server" class="frm" method="post" action=""&gt;
    &lt;span&gt;&lt;input type="radio" name="options" value="Milk" /&gt;&lt;label&gt;Option 1&lt;/label&gt;&lt;/span&gt;
    &lt;span&gt;&lt;input type="radio" name="options" value="Butter" /&gt;&lt;label&gt;Option 2&lt;/label&gt;&lt;/span&gt;
    &lt;span&gt;&lt;input type="radio" name="options" value="Cheese" /&gt;&lt;label&gt;Option 3&lt;/label&gt;&lt;/span&gt;
    &lt;span&gt;&lt;input type="radio" name="options" value="Milk" /&gt;&lt;label&gt;Option 4&lt;/label&gt;&lt;/span&gt;
    &lt;span&gt;&lt;input type="radio" name="options" value="Butter" /&gt;&lt;label&gt;Option 5&lt;/label&gt;&lt;/span&gt;
    &lt;span&gt;&lt;input type="radio" name="options" value="Cheese" /&gt;&lt;label&gt;Option 6&lt;/label&gt;&lt;/span&gt;
    &lt;input type="submit" name="submit" value="vote" /&gt;
 &lt;/form&gt;
</code></pre>

<p>*<em>Button Code *</em></p>

<pre><code>&lt;asp:Button ID="loginBtn" runat="server" Text="vote" OnClick="Login" /&gt; 
</code></pre>
