سلام دوستان عزیز

من در حال طراحی صفحه لاگین بودم که وقتی روی دکمه کلیک کردم دیدم ارور میده (فک میکنم پست بک میکنه!)

تکست باکس هام htmlی هستن. ولی دکمه لاگینم asp button هست.

کدهای لاگینم رو پاک کردم اما بازم وقتی روی دیکه کلیک میکنم ارور میده!!!

قبلا با این مشکل مواجه شده بودم اما اونموقع غیر از تگ فرم خود مسترپیج ، یک تگ فرم دیگه هم توی کدهام بود و پاک کردم درست شد. اما الان هیچ تگ فرمی توی کدهام نیست.

متن ارور :

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) +144
   System.Web.UI.Control.ValidateEvent(String uniqueID, String eventArgument) +111
   System.Web.UI.HtmlControls.HtmlInputText.LoadPostData(String postDataKey, NameValueCollection postCollection) +77
   System.Web.UI.HtmlControls.HtmlInputText.System.Web.UI.IPostBackDataHandler.LoadPostData(String postDataKey, NameValueCollection postCollection) +13
   System.Web.UI.Page.ProcessPostData(NameValueCollection postData, Boolean fBeforeLoad) +303
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1960

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