Submit is not working
<p>I'm using dynamic controls at my ASP.NET applications. So the issue is - when I use these controls separatelly - they work well. But when I put these two controls on the same page - ONLY LAST submit event is fired. Could anyone help me to identify where is the issue and how to fix it?</p>

<p>Here is my aspx layout:</p>

<pre><code>&lt;%@ Control Language="C#" AutoEventWireup="True" CodeBehind="MYPAGE.ascx.cs" Inherits="MYNAMESPACE" %&gt;
&lt;%@ Register Assembly="MYANOTHERNAMESPACE" Namespace="MYNAMESPACE" TagPrefix="DAControl" %&gt;

...
 &lt;div&gt;
     &lt;DAControl:ChooseImageDialog runat="server" id="ChooseImageDialog" /&gt;
     &lt;DAControl:ChooseVideoDialog runat="server" id="ChooseVideoDialog" /&gt;
 &lt;/div&gt;
</code></pre>

<p>Here is my 1st control:</p>

<pre><code>    [ToolboxData("&lt;{0}:ChooseImageDialog runat=server&gt;&lt;/{0}:ChooseImageDialog&gt;")]
    public class ChooseImageDialog : WebControl
    {
        /* This is only part of my code, which should enough for explaining the issue*/

        private Button applyPreview = new Button();
        private Button cancelPreview = new Button();

        protected override void OnLoad(EventArgs e)
        {
            applyPreview.Click += new EventHandler(applyPreview_Click);

            base.OnLoad(e);
        }

        void applyPreview_Click(object sender, EventArgs e)
        {
            // I want to reach this block
        }
    }
}
</code></pre>

<p>Here is my 2nd control:</p>

<pre><code>[ToolboxData("&lt;{0}:ChooseVideoDialog runat=server&gt;&lt;/{0}:ChooseVideoDialog&gt;")]
    public class ChooseVideoDialog : WebControl
    {
        /* This is only part of my code, which should enough for explaining the issue*/
        private Button applyVideoPreview = new Button();
        private Button cancelPreview = new Button();

        protected override void OnLoad(EventArgs e)
        {    
            applyVideoPreview.Click += new EventHandler(ApplyPreviewVideo_Click);

            base.OnLoad(e);
        }

        void ApplyPreviewVideo_Click(object sender, EventArgs e)
        {
            // I want to reach this block
        }

    }
</code></pre>
