[InvalidCastException: [A]System.Collections.Generic.List`1[ShoppingCart] cannot be cast to [B]System.Collections.Generic.List`1[ShoppingCart]. Type A originates from 'mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' in the context 'LoadNeither' at location 'C:\Windows\assembly\GAC_32\mscorlib\2.0.0.0__b77a5c561934e089\mscorlib.dll'. Type B originates from 'mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' in the context 'LoadNeither' at location 'C:\Windows\assembly\GAC_32\mscorlib\2.0.0.0__b77a5c561934e089\mscorlib.dll'.]
ShopCart.ShowCart() in c:\inetpub\vhosts\kiengiangcomputer.com\httpdocs\ShopCart.aspx.cs:31
ShopCart.Page_Load(Object sender, EventArgs e) in c:\inetpub\vhosts\kiengiangcomputer.com\httpdocs\ShopCart.aspx.cs:18
System.Web.Util.CalliHelper.EventArgFunctionCaller(IntPtr fp, Object o, Object t, EventArgs e) +14
System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) +35
System.Web.UI.Control.OnLoad(EventArgs e) +99
System.Web.UI.Control.LoadRecursive() +50
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +627
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