怎么办？谢谢高人指点！！下面是具体显示内容：
说明: 执行当前 Web 请求期间，出现未处理的异常。请检查堆栈跟踪信息，以了解有关该错误以及代码中导致错误的出处的详细信息。
异常详细信息: System.NullReferenceException: 未将对象引用设置到对象的实例。
源错误:
| 行 46: string loginurl = "/http/BlogLoginSubmit?from=" + from + "&url=" + url; 行 47: 行 48: if (username.Length > 0) 行 49: { 行 50: isLogin = true; |
源文件: d:\websites\Passport\Views\Login\BlogLogin.aspx 行: 48
堆栈跟踪:
| [NullReferenceException: 未将对象引用设置到对象的实例。] ASP.views_login_bloglogin_aspx.__Render__control1(HtmlTextWriter __w, Control parameterContainer) in d:\websites\Passport\Views\Login\BlogLogin.aspx:48 System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +256 System.Web.UI.Control.RenderChildren(HtmlTextWriter writer) +19 System.Web.UI.Page.Render(HtmlTextWriter writer) +29 System.Web.Mvc.ViewPage.Render(HtmlTextWriter writer) +42 System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +27 System.Web.UI.Control.RenderControl(HtmlTextWriter writer, ControlAdapter adapter) +99 System.Web.UI.Control.RenderControl(HtmlTextWriter writer) +25 System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1266 |