我有一个webmethod将从jquery ajax调用:
[WebMethod] public string TestMethod(string param1,string param2) { StringBuilder b = new StringBuilder(); HtmlTextWriter h = new HtmlTextWriter(new StringWriter(b)); this.LoadControl("~/Pages/Controls/Listing.ascx").RenderControl(h); string controlAsstring = b.ToString(); return controlAsstring; }
当执行loadControl()方法时,我会收到一个错误:RegisterForEventValidation只能在Render中调用.
我已经为当前的aspx,禁用的viewstate包含了EnableEventValidation =“false”.但是我仍然会遇到同样的错误.有什么想法吗?
解决方法
解决方案是将页面的事件验证作为
<%@ Page ............ EnableEventValidation =“false”%>
<%@ Page ............ EnableEventValidation =“false”%>
并通过在C#代码中添加以下方法来覆盖VerifyRenderingInServerForm
public override void VerifyRenderingInServerForm(Control control) { /* Confirms that an HtmlForm control is rendered for the specified ASP.NET server control at run time. */ }
参考下面的链接
http://www.codeproject.com/Questions/45450/RegisterForEventValidation-can-only-be-called-duri