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POAn object with the same key already exists in the ObjectStateManager
 

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  1. POAn object with the same key already exists in the ObjectStateManager
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    <p>Anybody can help me with this code I am getting this error message:</p> <blockquote> <p>Server Error in '/' Application. An object with the same key already exists in the ObjectStateManager. The existing object is in the Modified state. An object can only be added to the ObjectStateManager again if it is in the added state. Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.</p> <p>Exception Details: System.InvalidOperationException: An object with the same key already exists in the ObjectStateManager. The existing object is in the Modified state. An object can only be added to the ObjectStateManager again if it is in the added state.</p> </blockquote> <p>Source Error:</p> <pre><code>Line 90: public void AddToTwitter(Twitter twitter) Line 91: { Line 92: base.AddObject("Twitter", twitter); Line 93: } </code></pre> <p>Source File: C:\Users\dell\Documents\Visual Studio 2010\Projects\MvcApplication3\MvcApplication3\Models\TwitterEntity.Designer.cs Line: 92 </p> <p>the code is :</p> <pre><code>Models.TwitterEntities entity = new Models.TwitterEntities(); Models.Twitter tw = new Models.Twitter(); foreach (Hashtable item in (ArrayList)hs["results"]) { foreach (DictionaryEntry subitem in item) { if (subitem.Key.ToString() == "from_user") { tw.from_user = (string)subitem.Value; Response.Write("&lt;br&gt;" + (string)subitem.Value); entity.AddToTwitter(tw); } if (subitem.Key.ToString() == "to_user") { tw.to_user = (string)subitem.Value; Response.Write("&lt;br&gt;" + (string)subitem.Value); entity.AddToTwitter(tw); } entity.SaveChanges(); } } </code></pre>
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    1. This table or related slice is empty.
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    1. USAdam
    1. USkankele
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    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
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      1. POAn object with the same key already exists in the ObjectStateManager
      1. This table or related slice is empty.
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    1. COYou should use generic collections.
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      1. USSLaks
 

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Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

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