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 184:        List<BreadCrumbInfo> sourceList = new List<BreadCrumbInfo>();
Line 185:        Category cat = CategoryBL.GetCategoryByID(CategoryID);
Line 186:        sourceList.Add(new BreadCrumbInfo(cat.CategoryName,
Line 187:                                TextChanger.GetLinkRewrite_CategoryArticle(cat.CategoryID,
Line 188:                                                                           cat.CategoryName)));

Source File: c:\Website\baovevietduc.com.vn\ArticleDetails.aspx.cs Line: 186

Stack Trace:


[NullReferenceException: Object reference not set to an instance of an object.]
   ArticleDetails.BindDataToNavigate() in c:\Website\baovevietduc.com.vn\ArticleDetails.aspx.cs:186
   ArticleDetails.Page_Load(Object sender, EventArgs e) in c:\Website\baovevietduc.com.vn\ArticleDetails.aspx.cs:56
   System.Web.UI.Control.OnLoad(EventArgs e) +107
   System.Web.UI.Control.LoadRecursive() +89
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1532

Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.8.4682.0