[ArgumentOutOfRangeException: Index was out of range. Must be non-negative and less than the size of the collection.
Parameter name: index]
System.ThrowHelper.ThrowArgumentOutOfRangeException(ExceptionArgument argument, ExceptionResource resource) +77
System.Collections.Generic.List`1.get_Item(Int32 index) +14369976
control_MaktabItem.GetcourseData() in c:\1site\20file\v1\control\MaktabItem.ascx.cs:73
control_MaktabItem.loadCourseData(Int32 maktabCourseId) in c:\1site\20file\v1\control\MaktabItem.ascx.cs:60
def_BaseCat.Page_Load(Object sender, EventArgs e) in c:\1site\20file\v1\def\BaseCat.aspx.cs:61
System.Web.UI.Control.OnLoad(EventArgs e) +108
System.Web.UI.Control.LoadRecursive() +90
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +1533
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