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[Solved] Index was out of range. Must be non-negative and less than the size of the collection.

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This is a migrated thread and some comments may be shown as answers.

Kevin asked on 14 May 2009, 05:58 PM

I am using the following client-side code to delete a node from a tree:

    
                    function tvNavigation_ClientNodeDropping(sender, args) { 
        
                        var elem = args.get_htmlElement(); 
        
                        if(elem==null || elem.id != "TrashCan") { 
        
                            args.set_cancel(true); 
        
                            return; 
        
                        } 
        
                        var tree = $find('<%= tvNavigation.ClientID %>'); 
        
                        tree.trackChanges(); 
        
                        try { 
        
                            var sourceNode = args.get_sourceNode(); 
        
                            var parent = sourceNode.get_parent(); 
        
                            parent.get_nodes().remove(sourceNode); 
        
                        } 
        
                        catch(ex) { console.log(ex); } 
        
                        tree.commitChanges(); 
        
                    }

It successfully delete the node client-side but throws this exception in the console:

[Exception... "'Sys.WebForms.PageRequestManagerServerErrorException: Sys.WebForms.PageRequestManagerServerErrorException: Index was out of range. Must be non-negative and less than the size of the collection. Parameter name: index' when calling method: [nsIDOMEventListener::handleEvent]" nsresult: "0x8057001c (NS_ERROR_XPC_JS_THREW_JS_OBJECT)" location: "JS frame :: chrome://firebug/content/spy.js :: onHTTPSpyReadyStateChange :: line 497" data: no]

Also, the node does not get deleted server-side. Running the project in debug mode, I never see where or how the exception get raised. Is there any solution to this problem?

* I am using Q1 2009 SP1 controls

[Solved] Index was out of range. Must be non-negative and less than the size of the collection.

3 Answers, 1 is accepted