System.Web.HttpUnhandledException (0x80004005): Exception of type 'System.Web.HttpUnhandledException' was thrown. ---> System.InvalidOperationException: Sequence contains no elements at System.Linq.Enumerable.Min(IEnumerable`1 source) at HueWACO.eOffice.Pages.eOffice.BaoCaoCVTT.MonthPlanSummary.GetDataList() in D:\Source\HueWACO.eOffice\HueWACO.eOffice\Pages\eOffice\BaoCaoCVTT\MonthPlanSummary.aspx.cs:line 80 at HueWACO.Business.Common.ListViewPageBase.BindDataToListView() in D:\Source\HueWACO.eOffice\HueWACO.Business\Common\ListViewPageBase.cs:line 92 at HueWACO.Business.Common.ListViewPageBase.Page_Load(Object sender, EventArgs e) in D:\Source\HueWACO.eOffice\HueWACO.Business\Common\ListViewPageBase.cs:line 47 at System.Web.UI.Control.OnLoad(EventArgs e) at System.Web.UI.Control.LoadRecursive() at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) at System.Web.UI.Page.HandleError(Exception e) at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) at System.Web.UI.Page.ProcessRequest(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) at System.Web.UI.Page.ProcessRequest() at System.Web.UI.Page.ProcessRequest(HttpContext context) at System.Web.HttpApplication.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() at System.Web.HttpApplication.ExecuteStepImpl(IExecutionStep step) at System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously)