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 24:         ArticleEntity articleEtt = ArticleBiz.GetArticleByUrlName(_title);
Line 25:         { 
Line 26:             Id = articleEtt.ArticleID;
Line 27:         }//Lấy về ID của bài viết chi tiết
Line 28:         if (IsPostBack) return;//Nếu là Refresh trang sẽ không chạy đoạn code bên dưới

Source File: c:\OneDrive\Domains\Sachhungyen.vn\Controls\Article\ArticleDetail.ascx.cs    Line: 26

Stack Trace:


[NullReferenceException: Object reference not set to an instance of an object.]
   Controls_Article_ArticleDetail.Page_Load(Object sender, EventArgs e) in c:\OneDrive\Domains\Sachhungyen.vn\Controls\Article\ArticleDetail.ascx.cs:26
   System.Web.UI.Control.OnLoad(EventArgs e) +107
   System.Web.UI.Control.LoadRecursive() +89
   System.Web.UI.Control.LoadRecursive() +184
   System.Web.UI.Control.LoadRecursive() +184
   System.Web.UI.Control.LoadRecursive() +184
   System.Web.UI.Control.LoadRecursive() +184
   System.Web.UI.Control.LoadRecursive() +184
   System.Web.UI.Control.LoadRecursive() +184
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1532


Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.8.4690.0