Invalid postback or callback argument. Event validation is enabled using

hi 

I have imagebutton in my page below is code

<asp:ImageButton ID="IMGmanage1" runat="server" onclick="IMGmanage1_Click" ImageUrl="~/image/viewpro.png" />

protected void IMGmanage1_Click(object sender, ImageClickEventArgs e)
{
    Response.Redirect("view.aspx?BehCode=" + Request.QueryString["BehCode"]);
}

but when I click on imagebutton below error happen:

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. 

What should I do?

Best Regards

Neda