Erreur lors de l'ajout de MasterPage

Question

Server Error in '/' Application. 
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Invalid postback or callback argument. Event validation is enabled using <pages enableEventValidation="true"/> in configuration or <%@ Page EnableEventValidation="true" %> in a page. For security purposes, this feature verifies that arguments to postback or callback events originate from the server control that originally rendered them. If the data is valid and expected, use the ClientScriptManager.RegisterForEventValidation method in order to register the postback or callback data for validation. 
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. 

Exception Details: System.ArgumentException: Invalid postback or callback argument. Event validation is enabled using <pages enableEventValidation="true"/> in configuration or <%@ Page EnableEventValidation="true" %> in a page. For security purposes, this feature verifies that arguments to postback or callback events originate from the server control that originally rendered them. If the data is valid and expected, use the ClientScriptManager.RegisterForEventValidation method in order to register the postback or callback data for validation. 

Source Error: 

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. 

Stack Trace: 


[ArgumentException: Invalid postback or callback argument. Event validation is enabled using <pages enableEventValidation="true"/> in configuration or <%@ Page EnableEventValidation="true" %> in a page. For security purposes, this feature verifies that arguments to postback or callback events originate from the server control that originally rendered them. If the data is valid and expected, use the ClientScriptManager.RegisterForEventValidation method in order to register the postback or callback data for validation.] 
    System.Web.UI.ClientScriptManager.ValidateEvent(String uniqueId, String argument) +2080169 
    System.Web.UI.Control.ValidateEvent(String uniqueID, String eventArgument) +106 
    System.Web.UI.WebControls.LinkButton.RaisePostBackEvent(String eventArgument) +32 
    System.Web.UI.WebControls.LinkButton.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) +7 
    System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) +11 
    System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +174 
    System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +5102 




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Version Information: Microsoft .NET Framework Version:2.0.50727.42; ASP.NET Version:2.0.50727.42 

Que puis-je faire pour corriger cela?

Answer 1

L'erreur contient suffisamment d'informations sur ce qu'il faut, vous pouvez faire une des opérations suivantes:

1. directive Ajouter au Maître page

<%@ Page EnableEventValidation="true" %> 

2. Modifier Web.Config

<system.web> 
    <pages enableEventValidation="true"/> 
</system.web> 

Answer 2

Vous pouvez avoir plusieurs éléments de formulaire. Supprimez tout élément de formulaire de la page de contenu.