Server Error in '/' Application.

Object reference not set to an instance of an object.

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.NullReferenceException: Object reference not set to an instance of an object.

Source Error:


Line 1:  @{var ma1 = Page_Context.Current.PageRequestContext.AllQueryString["UserKey"];
Line 2:  if(ma1.Trim().IndexOf("'") <= 0){
Line 3:  string ma = ma1.Trim().Replace("'", "");
Line 4:  int mavb=0;

Source File: e:\www\dienbien.dic.gov.vn\Cms_Data\Sites\HDIENBIEN\Templates\Views\Center.Tintuc.AllModVb\template.cshtml    Line: 2

Stack Trace:


[NullReferenceException: Object reference not set to an instance of an object.]
   ASP._Page_Cms_Data_Sites_HDIENBIEN_Templates_Views_Center_Tintuc_AllModVb_template_cshtml.Execute() in e:\www\dienbien.dic.gov.vn\Cms_Data\Sites\HDIENBIEN\Templates\Views\Center.Tintuc.AllModVb\template.cshtml:2
   System.Web.WebPages.WebPageBase.ExecutePageHierarchy() +251
   System.Web.Mvc.WebViewPage.ExecutePageHierarchy() +146
   System.Web.WebPages.WebPageBase.ExecutePageHierarchy(WebPageContext pageContext, TextWriter writer, WebPageRenderingBase startPage) +121
   Longwin.CMS.Sites.View.PositionRender.ViewRender.RenderViewInternal(HtmlHelper htmlHelper, String viewPath, ViewDataDictionary viewData, Object model) +333
   Longwin.CMS.Sites.View.PositionRender.ViewRender.RenderView(HtmlHelper htmlHelper, Page_Context pageContext, String viewName, ViewDataDictionary viewData, Object parameters, Boolean executeDataRule) +723
   Longwin.CMS.Sites.View.FrontHtmlHelper.RenderView(String viewName, ViewDataDictionary viewData, Object parameters, Boolean executeDataRule) +60
   Longwin.CMS.Sites.View.<>c__DisplayClass13.<RenderView>b__11() +88
   Longwin.CMS.Sites.View.FrontHtmlHelper.RenderView(ViewPosition viewPosition) +579
   Longwin.CMS.Sites.View.<RenderPositionContents>d__b.MoveNext() +429
   System.Linq.Buffer`1..ctor(IEnumerable`1 source) +152
   System.Linq.Enumerable.ToArray(IEnumerable`1 source) +91
   Longwin.CMS.Sites.View.FrontHtmlHelper.Position(String positionID, Func`1 defaultContentFunc) +291
   ASP._Page_Cms_Data_Sites_HDIENBIEN_Templates_Layouts_CongHuyen_template_cshtml.Execute() in e:\www\dienbien.dic.gov.vn\Cms_Data\Sites\HDIENBIEN\Templates\Layouts\CongHuyen\template.cshtml:23
   System.Web.WebPages.WebPageBase.ExecutePageHierarchy() +252
   System.Web.Mvc.WebViewPage.ExecutePageHierarchy() +147
   System.Web.WebPages.WebPageBase.ExecutePageHierarchy(WebPageContext pageContext, TextWriter writer, WebPageRenderingBase startPage) +122
   System.Web.Mvc.ViewResultBase.ExecuteResult(ControllerContext context) +375
   Longwin.CMS.Sites.Controllers.PageControllerActionInvoker.InvokeActionResult(ControllerContext controllerContext, ActionResult actionResult) +85
   System.Web.Mvc.<>c__DisplayClass1a.<InvokeActionResultWithFilters>b__17() +31
   System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilter(IResultFilter filter, ResultExecutingContext preContext, Func`1 continuation) +436
   System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilter(IResultFilter filter, ResultExecutingContext preContext, Func`1 continuation) +436
   System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilter(IResultFilter filter, ResultExecutingContext preContext, Func`1 continuation) +436
   System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilter(IResultFilter filter, ResultExecutingContext preContext, Func`1 continuation) +436
   System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilter(IResultFilter filter, ResultExecutingContext preContext, Func`1 continuation) +436
   System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilter(IResultFilter filter, ResultExecutingContext preContext, Func`1 continuation) +436
   System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilter(IResultFilter filter, ResultExecutingContext preContext, Func`1 continuation) +436
   System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilter(IResultFilter filter, ResultExecutingContext preContext, Func`1 continuation) +436
   System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilter(IResultFilter filter, ResultExecutingContext preContext, Func`1 continuation) +436
   System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilter(IResultFilter filter, ResultExecutingContext preContext, Func`1 continuation) +436
   System.Web.Mvc.ControllerActionInvoker.InvokeActionResultFilter(IResultFilter filter, ResultExecutingContext preContext, Func`1 continuation) +436
   System.Web.Mvc.ControllerActionInvoker.InvokeAction(ControllerContext controllerContext, String actionName) +658
   System.Web.Mvc.<>c__DisplayClass1d.<BeginExecuteCore>b__19() +39
   System.Web.Mvc.Async.<>c__DisplayClass1.<MakeVoidDelegate>b__0() +25
   System.Web.Mvc.Controller.EndExecuteCore(IAsyncResult asyncResult) +73
   System.Web.Mvc.Async.<>c__DisplayClass4.<MakeVoidDelegate>b__3(IAsyncResult ar) +25
   System.Web.Mvc.Controller.EndExecute(IAsyncResult asyncResult) +59
   System.Web.Mvc.<>c__DisplayClass8.<BeginProcessRequest>b__3(IAsyncResult asyncResult) +41
   System.Web.Mvc.Async.<>c__DisplayClass4.<MakeVoidDelegate>b__3(IAsyncResult ar) +25
   System.Web.Mvc.MvcHandler.EndProcessRequest(IAsyncResult asyncResult) +59
   System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +602
   System.Web.HttpApplication.ExecuteStepImpl(IExecutionStep step) +195
   System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +128


Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.7.4087.0