Empty datetime bug in Linq to Umbraco 4.5

Problem : Empty datetime property makes it unable to load the instances with Linq

Example:Season has a empty EndDate

 
 <season id="1110" parentID="1093" level="3" writerID="0" creatorID="0" nodeType="1086" template="0" sortOrder="1" createDate="2010-07-07T12:09:17" updateDate="2010-07-16T15:52:39" nodeName="seizoen 2010/2011" urlName="seizoen-20102011" writerName="Administrator" creatorName="Administrator" path="-1,1091,1093,1110" isDoc="">
        <startDate>2010-07-16T00:00:00</startDate>
        <endDate />
        <umbracoSearchHide>0</umbracoSearchHide>
  </season>

Then running the code

 ctx = new MyUmbracoDataContext();

            var shows = (from sh in ctx.Seasons
                          select sh ).ToList();

leads to the errror below. Filling the enddate an publishing solves the problem but this would mean that all dates would need to be mandatory . Hope this is enough info ;-) Regards Teus

Server Error in '/' Application.

String was not recognized as a valid DateTime.

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.FormatException: String was not recognized as a valid DateTime.

Source Error:

Line 17:             ctx = new MyUmbracoDataContext();
Line 18: 
Line 19:             var seasons = (from sh in ctx.Seasons
Line 20:                           select sh ).ToList();
Line 21:             RPshows.DataSource = shows;

Source File: C:\SVN_WORK\StadsschouwburgVelsen_2010Website\Solution\BO.Velsen.Umbraco\usercontrols\HomePageShowViewer.ascx.cs Line: 19

Stack Trace:

[FormatException: String was not recognized as a valid DateTime.]
   System.DateTime.Parse(String s, IFormatProvider provider) +6365762
   System.Convert.ToDateTime(String value, IFormatProvider provider) +14
   System.Convert.ChangeType(Object value, Type conversionType, IFormatProvider provider) +12813387
   System.Convert.ChangeType(Object value, Type conversionType) +133
   umbraco.Linq.Core.Node.NodeDataProvider.LoadFromXml(XElement xml, T node) +3162
   umbraco.Linq.Core.Node.NodeTree`1.GetEnumerator() +1058
   System.Linq.WhereSelectEnumerableIterator`2.MoveNext() +107
   System.Collections.Generic.List`1..ctor(IEnumerable`1 collection) +472
   System.Linq.Enumerable.ToList(IEnumerable`1 source) +80
   BO.Velsen.Umbraco.usercontrols.HomePageShowViewer.Page_Load(Object sender, EventArgs e) in C:\SVN_WORK\StadsschouwburgVelsen_2010Website\Solution\BO.Velsen.Umbraco\usercontrols\HomePageShowViewer.ascx.cs:19
   System.Web.Util.CalliHelper.EventArgFunctionCaller(IntPtr fp, Object o, Object t, EventArgs e) +25
   System.Web.UI.Control.LoadRecursive() +71
   System.Web.UI.Control.LoadRecursive() +190
   System.Web.UI.Control.LoadRecursive() +190
   System.Web.UI.Control.LoadRecursive() +190
   System.Web.UI.Control.LoadRecursive() +190
   System.Web.UI.Control.LoadRecursive() +190
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +3048

Version Information: Microsoft .NET Framework Version:4.0.30319; ASP.NET Version:4.0.30319.1

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Aaron Powell 1708 posts 3046 karma points c-trib

Jul 18, 2010 @ 10:39

0

Can you log this on codeplex as a bug

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teus 42 posts 74 karma points

Aug 16, 2010 @ 11:14

0

Logged on codeplex : http://umbraco.codeplex.com/workitem/28576

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Aaron Powell 1708 posts 3046 karma points c-trib

Aug 18, 2010 @ 10:29

0

I'm working on a resolution for this, see this thread: http://our.umbraco.org/forum/core/41-feedback/11237-LINQ-to-Umbraco-optional-structs

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