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 144:        }
Line 145:  
Line 146:        prolist.DataSource = urunler.Where(x => x.ParentID == ProductDetail.ParentID);
Line 147:        prolist.DataBind();
Line 148:

Source File: c:\inetpub\vhosts\berkoilac.com.tr\httpdocs\urundetay.aspx.cs    Line: 146

Stack Trace:


[NullReferenceException: Object reference not set to an instance of an object.]
   <>c__DisplayClass6.<List>b__4(ProductBase x) in c:\inetpub\vhosts\berkoilac.com.tr\httpdocs\urundetay.aspx.cs:146
   System.Linq.WhereListIterator`1.MoveNext() +77
   System.Web.UI.WebControls.Repeater.AddDataItemsIntoItemsArray(IEnumerable dataSource, Boolean useDataSource) +118
   System.Web.UI.WebControls.Repeater.PostGetDataAction(IEnumerable dataSource) +73
   System.Web.UI.WebControls.Repeater.CreateControlHierarchy(Boolean useDataSource) +229
   System.Web.UI.WebControls.Repeater.OnDataBinding(EventArgs e) +63
   System.Web.UI.WebControls.Repeater.DataBind() +81
   urundetay.List(Int32 _productID) in c:\inetpub\vhosts\berkoilac.com.tr\httpdocs\urundetay.aspx.cs:147
   urundetay.Page_Load(Object sender, EventArgs e) in c:\inetpub\vhosts\berkoilac.com.tr\httpdocs\urundetay.aspx.cs:54
   System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) +52
   System.Web.UI.Control.OnLoad(EventArgs e) +97
   System.Web.UI.Control.LoadRecursive() +61
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +693


Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.8.4700.0