我正在使用ASP.NET 3.5 SP1 System.Web.Routing与经典WebForms,如
http://chriscavanagh.wordpress.com/2008/04/25/systemwebrouting-with-webforms-sample/中所述
一切正常,我有自定义SEO网址甚至回发作品.但有一种情况,回发总是失败,我得到一个：
验证视图状态MAC失败.如果此应用程序由Web场或群集托管,请确保配置指定相同的validationKey和验证算法. AutoGenerate不能在群集中使用.
以下是重现错误的方案：
>使用按钮创建标准webform mypage.aspx
>创建一个将“a / b / {id}”映射到“〜/ mypage.aspx”的路线
>当您执行该站点时,您可以导航http://localhost:XXXX/a/b/something页面工作.但是当你按下按钮时会出现错误.当Route只是“a / {id}”时,不会发生错误.
它似乎与url中的子路径数有关.如果至少有2个子路径,则视图状态验证失败.
即使使用EnableViewStateMac =“false”,您也会收到错误.
有任何想法吗？这是一个错误吗？
谢谢
解决方法
我通过让我的视图用户控件继承自此类而不是ViewUserControl< T>来解决这个问题. (这是RenderView的补丁).它为我做了伎俩,希望它也适合你.
public class ViewUserControlWithoutViewState<T> : ViewUserControl<T> where T : class {
protected override void LoadViewState(object savedState) {}
protected override object SaveControlState() {
return null;
}
protected override void LoadControlState(object savedState) {}
protected override object SaveViewState() {
return null;
}
/// <summary>
/// extracted from System.Web.Mvc.ViewUserControl
/// </summary>
/// <param name="viewContext"></param>
public override void RenderView(ViewContext viewContext) {
viewContext.HttpContext.Response.Cache.SetExpires(DateTime.Now);
var containerPage = new ViewUserControlContainerPage(this);
ID = Guid.NewGuid().ToString();
RenderViewAndRestoreContentType(containerPage,viewContext);
}
/// <summary>
/// extracted from System.Web.Mvc.ViewUserControl
/// </summary>
/// <param name="containerPage"></param>
/// <param name="viewContext"></param>
public static void RenderViewAndRestoreContentType(ViewPage containerPage,ViewContext viewContext) {
string contentType = viewContext.HttpContext.Response.ContentType;
containerPage.RenderView(viewContext);
viewContext.HttpContext.Response.ContentType = contentType;
}
/// <summary>
/// Extracted from System.Web.Mvc.ViewUserControl+ViewUserControlContainerPage
/// </summary>
private sealed class ViewUserControlContainerPage : ViewPage {
// Methods
public ViewUserControlContainerPage(ViewUserControl userControl) {
Controls.Add(userControl);
EnableViewState = false;
}
protected override object LoadPageStateFromPersistenceMedium() {
return null;
}
protected override void SavePageStateToPersistenceMedium(object state) {}
}
}
我blogged about this前一段时间.
