creating 2 mntp on dashboard causes exception

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Murray Roke 503 posts 966 karma points c-trib

Dec 15, 2011 @ 05:29

I've got 2 MNTP controls on a dashboard, to bulk copy / move content like so:

<uComponents:MNTP_DataEditor id="SourceNodesInput" runat="server" 
                StartNodeId="0" DataTypeDefinitionId="1199"  />

<uComponents:MNTP_DataEditor id="TargetNodesInput" runat="server" 
                StartNodeId="0" DataTypeDefinitionId="2060"  />

These each make a request to TreeDataService like so:

http://localhost:18438/umbraco/webservices/TreeDataService.ashx?rnd=d69b56eab70d4630be3119d671d33178&id=-1&treeType=FilteredContentTree&contextMenu=false&isDialog=true&dialogMode=id&nodeKey=1199&rnd2=70.2

http://localhost:18438/umbraco/webservices/TreeDataService.ashx?rnd=7ddaf9e953d14666b88c72e3ab18bdb6&id=-1&treeType=FilteredContentTree&contextMenu=false&isDialog=true&dialogMode=id&nodeKey=2060&rnd2=71.2

the first is OK

the second returns 500 with this exception

[ArgumentException: An item with the same key has already been added.]
   System.ThrowHelper.ThrowArgumentException(ExceptionResource resource) +52
   System.Collections.Generic.Dictionary`2.Insert(TKey key, TValue value, Boolean add) +9375355
   Umbraco.Courier.Core.Helpers.TypeFinder.FindClassesOfType(Boolean useSeperateAppDomain, Boolean onlyConcreteClasses) +283
   Umbraco.Courier.Core.Helpers.TypeFinder.FindClassesOfType(Boolean useSeperateAppDomain) +56
   Umbraco.Courier.Core.ProviderCollection`1.() +295
   Umbraco.Courier.UI.CourierTasks.TreeEvent.(XmlTree&amp; sender, XmlTreeNode&amp; node, EventArgs e) +518
   umbraco.cms.presentation.Trees.BaseTree.OnBeforeNodeRender(XmlTree&amp; sender, XmlTreeNode&amp; node, EventArgs e) +30
   umbraco.cms.presentation.Trees.BaseContentTree.Render(XmlTree&amp; Tree) +190
   umbraco.presentation.webservices.TreeDataService.LoadTree(TreeRequestParams treeParams) +74
   umbraco.presentation.webservices.TreeDataService.GetXmlTree() +140
   umbraco.presentation.webservices.TreeDataService.ProcessRequest(HttpContext context) +55
   System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +100
   System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean&amp; completedSynchronously) +75

BUT if I request the failed TreeDataService.ashx AGAIN it works, (I assume because of a time related bug)

Any ideas? should I report a bug?

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Jeroen Breuer 4908 posts 12265 karma points MVP 5x admin c-trib

Dec 15, 2011 @ 09:23

0

Have you tried this wiki? http://our.umbraco.org/wiki/reference/code-snippets/use-mntp-on-a-usercontrol

It's a different approach, but I've used it before and it works :).

Jeroen

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Lee Kelleher 4026 posts 15836 karma points MVP 13x admin c-trib

Dec 15, 2011 @ 10:26

0

Hi Murray,

Quite the edge case... curious what you're building - once your have it working, is it something you could share/release? (unless it's NDA'd client work?)

While I don't have the answer, I'm not sure where the onus lies. The exception is coming from Courier (via its OnBeforeNodeRender event handler) ... meaning that Courier is trying to add a dictionary key that already exists (surely a simple exists/contains check would resolve this matter).

Not sure if there is anything we can do in uComponents to resolve this. Although if there is anything we can do, then do let us know.

Cheers, Lee.

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Murray Roke 503 posts 966 karma points c-trib

Mar 06, 2012 @ 04:19

1

Hi,

This was on the back burner, but after upgrading to umbraco 4.7.1.1 and uComponents 3.0.2 the issues I've described above have gone away.

As to what I'm building: It allows you to move one or many nodes to another location, or copy one or many nodes to one or many locations.

In this case it's a multi-region site where they may, for example, select a news story to be copied to one or two other regions where it's relevant.

Cheers, Murray.

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