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POSetting Page.EnableEventValidation on Page_Init
 

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  1. POSetting Page.EnableEventValidation on Page_Init
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    <p>I have a user control in which I have successfully set <code>Page.EnableEventValidation = false</code> in the <code>Page_Init</code> event in the codebehind (in order to render the page markup to a string):</p> <p><strong>MyControl.ascx.cs</strong></p> <pre><code>protected void Page_Init(object sender, EventArgs e) { if (Request.Form["__EVENTTARGET"] != null &amp;&amp; Request.Form["__EVENTTARGET"] == btnPrint.ClientID.Replace("_", "$")) { Page.EnableEventValidation = false; } } </code></pre> <p>However, when I attempt to duplicate this functionality on a separate page (this time in <code>runat=server</code> script tags)...</p> <p><strong>MyPage.aspx</strong></p> <pre><code>&lt;script runat="server"&gt; protected void Page_Init(object sender, EventArgs e) { if (Request.Form["__EVENTTARGET"] != null &amp;&amp; Request.Form["__EVENTTARGET"] == btnDownloadPDF.ClientID.Replace("_", "$")) { Page.EnableEventValidation = false; } } &lt;/script&gt; </code></pre> <p>... I get the following error:</p> <blockquote> <p>The 'EnableEventValidation' property can only be set in the page directive or in the configuration section.</p> </blockquote> <p>Now, in my first example, I was receiving this error when originally attempting to do this on <code>Page_Load</code>; however, it seems that you <em>can</em> disable event validation programmatically as long as it's done during (or before) <code>Page_Init</code>. Unfortunately the same does not work in my second example.</p> <p>Why does this work in one scenario and not the other? Is it related to the fact that the code is not in a codebehind?</p>
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      1. POSetting Page.EnableEventValidation on Page_Init
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    1. COGenerally using `Page.EnableEventValidation = false` is a bad idea. Instead you should look at `Page.ClientScript.RegisterForEventValidation`
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      1. POSetting Page.EnableEventValidation on Page_Init
      1. USJack Pettinger
 

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