Server Error in '/' Application.

Value cannot be null.
Parameter name: source

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.ArgumentNullException: Value cannot be null.
Parameter name: source

Source Error:


Line 618:                var $htm = '<select name="Keyword" class="form-control">';
Line 619:                $htm += '<option value="">Chọn</option>';
Line 620:                    <%if(lstDonVi.Count() > 0) foreach (var item in lstDonVi){%>
Line 621:                $htm += '<option value="<%=item.ID%>"><%=item.Title%></option>';
Line 622:                    <%}%>

Source File: c:\tfs\CongKNQG\CongKNQG\SMPT_Publishing_UC\CSDL\KetQuaNhiemVu\UC_KetQuaNhiemVu.ascx    Line: 620

Stack Trace:


[ArgumentNullException: Value cannot be null.
Parameter name: source]
   System.Linq.Enumerable.Count(IEnumerable`1 source) +351
   ASP.smpt_publishing_uc_csdl_ketquanhiemvu_uc_ketquanhiemvu_ascx.__Render__control1(HtmlTextWriter __w, Control parameterContainer) in c:\tfs\CongKNQG\CongKNQG\SMPT_Publishing_UC\CSDL\KetQuaNhiemVu\UC_KetQuaNhiemVu.ascx:620
   System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +117
   System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +132
   System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +262
   System.Web.UI.WebControls.WebControl.RenderContents(HtmlTextWriter writer) +14
   System.Web.UI.WebControls.WebControl.Render(HtmlTextWriter writer) +50
   System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +132
   Microsoft.SharePoint.WebPartPages.SPChrome.RenderPartContents(HtmlTextWriter output, WebPart part) +37

[WebPartException: Value cannot be null.
Parameter name: source]
   Microsoft.SharePoint.WebPartPages.SPChrome.RenderPartContents(HtmlTextWriter output, WebPart part) +152
   Microsoft.SharePoint.WebPartPages.SPChrome.RenderWebPart(HtmlTextWriter output, WebPart part) +58
   Microsoft.SharePoint.WebPartPages.WebPartZone.RenderZoneCell(HtmlTextWriter output, Boolean bMoreParts, WebPart part) +2065
   Microsoft.SharePoint.WebPartPages.WebPartZone.RenderWebParts(HtmlTextWriter output, ArrayList webParts) +620
   Microsoft.SharePoint.WebPartPages.WebPartZone.Render(HtmlTextWriter output) +1104
   System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +132
   System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +262
   System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +132
   System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +262
   Microsoft.SharePoint.WebControls.AjaxDelta.RenderChildren(HtmlTextWriter output) +59
   System.Web.UI.WebControls.WebControl.RenderContents(HtmlTextWriter writer) +14
   System.Web.UI.WebControls.WebControl.Render(HtmlTextWriter writer) +50
   Microsoft.SharePoint.WebControls.AjaxDelta.Render(HtmlTextWriter writer) +349
   System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +132
   System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +262
   System.Web.UI.HtmlControls.HtmlForm.RenderChildren(HtmlTextWriter writer) +208
   System.Web.UI.HtmlControls.HtmlContainerControl.Render(HtmlTextWriter writer) +47
   Microsoft.SharePoint.WebControls.SharePointForm.Render(HtmlTextWriter output) +924
   System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +132
   System.Web.UI.HtmlControls.HtmlForm.RenderControl(HtmlTextWriter writer) +69
   System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +262
   System.Web.UI.HtmlControls.HtmlContainerControl.Render(HtmlTextWriter writer) +47
   System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +132
   System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +262
   System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +132
   System.Web.UI.Control.RenderChildrenInternal(HtmlTextWriter writer, ICollection children) +262
   System.Web.UI.Page.Render(HtmlTextWriter writer) +39
   Microsoft.SharePoint.WebControls.DeltaPage.RenderToBase(HtmlTextWriter writer) +906
   Microsoft.SharePoint.WebControls.DeltaPage.Render(HtmlTextWriter writer) +81
   System.Web.UI.Control.RenderControlInternal(HtmlTextWriter writer, ControlAdapter adapter) +132
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +8680


Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.7.4081.0