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POOperation is not valid due to the current state of the object. when i select dropdown list
 

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  1. POOperation is not valid due to the current state of the object. when i select dropdown list
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    <h2>i have radcombo boxes on aspx page and when i select any option from then it gives error`Server Error in '/' Application.</h2> <p>Operation is not valid due to the current state of the object. 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> <blockquote> <p>Exception Details: System.InvalidOperationException: Operation is not valid due to the current state of the object.</p> </blockquote> <p>Source Error: </p> <blockquote> <p>An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below.</p> </blockquote> <p>Stack Trace: </p> <blockquote> <p>[InvalidOperationException: Operation is not valid due to the current state of the object.]<br> System.Web.HttpValueCollection.ThrowIfMaxHttpCollectionKeysExceeded() +2692302 System.Web.HttpValueCollection.FillFromEncodedBytes(Byte[] bytes, Encoding encoding) +61<br> System.Web.HttpRequest.FillInFormCollection() +148</p> <p>[HttpException (0x80004005): The URL-encoded form data is not valid.] System.Web.HttpRequest.FillInFormCollection() +206<br> System.Web.HttpRequest.get_Form() +68<br> System.Web.HttpRequest.get_HasForm() +8735447<br> System.Web.UI.Page.GetCollectionBasedOnMethod(Boolean dontReturnNull) +97 System.Web.UI.Page.DeterminePostBackMode() +63 System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +133</p> </blockquote> <hr> <blockquote> <p>Version Information: Microsoft .NET Framework Version:2.0.50727.3634; ASP.NET Version:2.0.50727.3634 `</p> </blockquote>
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    1. PO
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      1. PTAnswer
    1. This table or related slice is empty.
    1. PTQuestion
    1. USRajesh
    1. USG.S Bhangal
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      1. LTLinked
    1. PL
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      1. LTLinked
    2. PL
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      1. LTLinked
    1. This table or related slice is empty.
    1. PO
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      1. PTAnswer
    2. PO
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    1. VO
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      1. POOperation is not valid due to the current state of the object. when i select dropdown list
      1. This table or related slice is empty.
      1. VTUpMod
    2. VO
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      1. POOperation is not valid due to the current state of the object. when i select dropdown list
      1. This table or related slice is empty.
      1. VTUpMod
    3. VO
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      1. POOperation is not valid due to the current state of the object. when i select dropdown list
      1. USSatish Dhiman
      1. VTFavorite
    1. COPost some code please.
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      1. POOperation is not valid due to the current state of the object. when i select dropdown list
      1. USTheGeekYouNeed
    2. COIt would e helpful if you can post some code. But this might be your issue: If your RadComboBox posts back on selection and you have a lot of form fields then you might get this exception. Here is another question with more details http://stackoverflow.com/questions/8832470/operation-is-not-valid-due-to-the-current-state-of-the-object-error-during-pos
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      1. POOperation is not valid due to the current state of the object. when i select dropdown list
      1. USFahad
 

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A row detail

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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