System.ArgumentOutOfRangeException: 'ddlGroup' has a SelectedValue which is invalid because it does not exist in the list of items. Parameter name: value at System.Web.UI.WebControls.ListControl.PerformDataBinding(IEnumerable dataSource) at System.Web.UI.WebControls.ListControl.OnDataBinding(EventArgs e) at System.Web.UI.WebControls.ListControl.PerformSelect() at System.Web.UI.WebControls.BaseDataBoundControl.DataBind() at GroupCtrl.FillGroup(String EXCHG, String Indices)
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