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Invalid postback or callback argument errorthat use EventBubbling. When I click either of them I receive the following error: Server Error in '/' Application. -------------------------------------------------------------------------------- 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) +2082588 System.Web.UI.Control.ValidateEvent(String uniqueID, String eventArgument) +106 System.Web.UI.WebControls.Button.RaisePostBackEvent(String eventArgument) +32 System.Web.UI.WebControls.Button.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) +33 System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +5102 -------------------------------------------------------------------------------- Version Information: Microsoft .NET Framework Version:2.0.50727.42; ASP.NET Version:2.0.50727.210 I had trouble getting the instructions in the error to work. If anybody can help me here, I would greatly apprecciate it. Thanks. Nathan Sokalski wrote:
Show quote > I have a DataList in which the ItemTemplate contains two Button controls If this is what I think it may be, then make sure you're not calling the > that use EventBubbling. When I click either of them I receive the following > error: > > Server Error in '/' Application. > -------------------------------------------------------------------------------- > > 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) +2082588 > System.Web.UI.Control.ValidateEvent(String uniqueID, String > eventArgument) +106 > System.Web.UI.WebControls.Button.RaisePostBackEvent(String eventArgument) > +32 > System.Web.UI.WebControls.Button.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) +33 > System.Web.UI.Page.ProcessRequestMain(Boolean > includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +5102 > > > > -------------------------------------------------------------------------------- > Version Information: Microsoft .NET Framework Version:2.0.50727.42; ASP.NET > Version:2.0.50727.210 > > I had trouble getting the instructions in the error to work. If anybody can > help me here, I would greatly apprecciate it. Thanks. same sub that pulls from your data source twice. For instance, if you created a sub procedure that populates your datalist and you are calling it when the user clicks a button within your itemtemplate, after the data processing has been done (or whatever processing you're doing with that button), make sure that it isn't also being called in your Page_load sub. When your page FIRST loads and you populate the datalist control, make sure that you have it within a If Not Page.IsPostBack and not where it gets called on every load. That's how I ran into the same error. Nathan,
There is no problem with crossposting. But you are crossposting it so much, that I expect that you get your answer in another newsgroup than I am active in for this question. Cor Show quote "Nathan Sokalski" <njsokal***@hotmail.com> schreef in bericht news:e4ttbt8MHHA.3424@TK2MSFTNGP02.phx.gbl... >I have a DataList in which the ItemTemplate contains two Button controls >that use EventBubbling. When I click either of them I receive the following >error: > > Server Error in '/' Application. > -------------------------------------------------------------------------------- > > 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) +2082588 > System.Web.UI.Control.ValidateEvent(String uniqueID, String > eventArgument) +106 > System.Web.UI.WebControls.Button.RaisePostBackEvent(String > eventArgument) +32 > > System.Web.UI.WebControls.Button.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) +33 > System.Web.UI.Page.ProcessRequestMain(Boolean > includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +5102 > > > > -------------------------------------------------------------------------------- > Version Information: Microsoft .NET Framework Version:2.0.50727.42; > ASP.NET Version:2.0.50727.210 > > I had trouble getting the instructions in the error to work. If anybody > can help me here, I would greatly apprecciate it. Thanks. > -- > Nathan Sokalski > njsokal***@hotmail.com > http://www.nathansokalski.com/ >  |
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