[ArgumentOutOfRangeException: 'ddlTerms' has a SelectedValue which is invalid because it does not exist in the list of items.
Parameter name: value]
System.Web.UI.WebControls.ListControl.PerformDataBinding(IEnumerable dataSource) +2738549
System.Web.UI.WebControls.ListControl.PerformSelect() +49
Courses_Schedule_DistanceLearning.BindTerms(Int32 termType, String term) +206
Courses_Schedule_DistanceLearning.Page_Load(Object sender, EventArgs e) +180
System.Web.UI.Control.OnLoad(EventArgs e) +132
System.Web.UI.Control.LoadRecursive() +66
System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +2428
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