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POToolkitScriptManager throws NullReferenceException during concurrent access to a page for the first time
 

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  1. POToolkitScriptManager throws NullReferenceException during concurrent access to a page for the first time
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    <p>i'm developing a ASP.NET web application which uses the AjaxControlkit 3.0.30512.20315. I have a <code>ToolkitScriptManager</code> instance on my master page which has some <code>ScriptReferences</code> in the <code>CombineScripts</code> collection. If i access my default page from 2 differenct clients after an <code>iisreset</code>, i get the following exception</p> <pre><code>[NullReferenceException: Object Reference not set to an instance of an object.] System.Collections.Generic.Dictionary`2.Insert(TKey key, TValue value, Boolean add) +143 System.Collections.Generic.Dictionary`2.set_Item(TKey key, TValue value) +11 AjaxControlToolkit.ToolkitScriptManager.GetScriptCombineAttributes(Assembly assembly) +129 AjaxControlToolkit.ToolkitScriptManager.IsScriptCombinable(ScriptEntry scriptEntry) +148 AjaxControlToolkit.ToolkitScriptManager.OnResolveScriptReference(ScriptReferenceEventArgs e) +415 System.Web.UI.ScriptManager.RegisterScripts() +191 System.Web.UI.ScriptManager.OnPagePreRenderComplete(Object sender, EventArgs e) +113 System.Web.UI.Page.OnPreRenderComplete(EventArgs e) +8698462 System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1029 </code></pre> <p>Using <code>.NET Reflector</code> i found out that the <code>GetScriptCombineAttributes</code>method access a <code>static dictionary</code>, which is <code>not protected against concurrent access</code>. Either i have a race condition in my code or there is a bug in the <code>AjaxToolkit</code>.</p> <p>Can anybody give me a hint on that one?</p> <p>Thanks in advance</p>
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    1. USMarcus Neser
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    1. CODid you ever get anywhere with this?
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      1. POToolkitScriptManager throws NullReferenceException during concurrent access to a page for the first time
      1. USilivewithian
    2. CO"Fixed with January 2013 Release of the Ajax Control Toolkit"
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      1. USuser423430
 

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