Do you think that it would help if you converted your array collection to an array collection of typed objects before sending it to .net?
--- In [email protected], Angelo Anolin <angelo_ano...@...> wrote: > > Hi Sam Lai, > > THanks for the input and my apologies for replying late since I felt the need > to get deeper on the issue I am encountering. > > In my web service, the arraycollection is received as an array list and yes, > it is like an array of xml nodes. > > In my arraycollection, say I have 5 columns and when one of the columns > contains an empty string, when I pass it to my .NET webservice, the arraylist > will have an array which only contains 4 columns (instead of the expected > 5).� That is why the empty field is actually causing me some problems. > > I am trying to find some E4x documentation / article specifically tackling > this kind of .NET and Flex integration. Do you know of some? > > Thanks and regards, > > Angelo > > > > > ________________________________ > From: Sam Lai <samuel....@...> > To: [email protected] > Sent: Saturday, 4 July, 2009 12:54:53 > Subject: Re: [flexcoders] ArrayCollection Does Not Show Items In Order When > Passed to .NET WebService > > > > > > I just wrote up a simple C# web service that accepts an ArrayList: > > [WebMethod] > public bool ArrayListTest( System.Collectio ns.ArrayList a) > { ... } > > Then in Flex I wrote this, > > <mx:Script> > <![CDATA[ > import mx.collections. ArrayCollection; > private function sendWebServiceCall( ):void > { > trace("appComplete" ); > ws.ArrayListTest( new ArrayCollection( [ {name:"bob", id:"808" }, { > name:"fred", id:"" }])); > } > ]]> > </mx:Script> > <mx:WebService wsdl="http://localhost: 63868/Service1. asmx?WSDL" id="ws"> > <mx:operation name="ArrayListTest " result="trace( event.result) " > fault="trace( event.fault. faultString) "/> > </mx:WebService> > > When sendWebServiceCall is triggered, it calls the C# web service and > passes the ArrayCollection to it. > > In the web service, the ArrayCollection is received as an array list > of XmlNodes. Each XmlNode contains a node for each field, even if it > is an empty string. > > <tns:id xmlns:tns="http://tempuri. org/">808</tns:id> > <tns:name xmlns:tns="http://tempuri. org/">bob</tns:name> > > <tns:id xmlns:tns="http://tempuri. org/"></tns:id> > <tns:name xmlns:tns="http://tempuri. org/">fred</tns: name> > > Is this anything like what you're getting? The edge case you described > in another email about an empty string causing problems doesn't seem > to cause problems. > > Also see inline. > > 2009/7/3 Angelo Anolin <angelo_anolin@ yahoo.com>: > > I think by doing things like this, it may not be the best way. > > > > You mentioned you'd map the XML to typed objects in .NET.� How can I do > > this? > > As you're using a dataset, this isn't really an option. A dataset as > opposed to a collection of typed objects are two ways of handling data > from data sources; it is arguable which way is better. > > The problem in your case, is that the XML generated as a result of > passing an ArrayCollection to a web service method cannot be passed > into the dataset's readXml method. (Even if it could by inferring a > schema, it would be different to your database's schema.) > > The only way I know of to do seamless transfer of data without having > to parse XML is to use WebORB. Otherwise you will have to parse the > XML produced on both sides to re-create the dataset/object. > > > Instead of using arraycollection as dataprovider in my datagrid, can I use > > another which would be much easier when I pass back to the .NET function? > > I wonder if it is possible to bind your datagrid directly to the e4x > XML? That way you can pass the entire XML doc back to .NET via the web > service, and hence you can re-create the dataset using > dataset.readXML. > > > ____________ _________ _________ __ > > From: Sam Lai <samuel....@gmail. com> > > To: flexcod...@yahoogro ups.com > > Sent: Friday, 3 July, 2009 13:52:12 > > Subject: Re: [flexcoders] ArrayCollection Does Not Show Items In Order When > > Passed to .NET WebService > > > > Instead of using an array list and trying to emulate the type-less > > abilities of AS3, I'd try to map the XML to typed objects in .NET. Or > > does the XML from your Flex app differ too wildly to do this? > > > > Are you using the XmlSerializer to deserialize this? Or are you using > > WCF? Or are you doing it some other way, or manually? > > > > I'd provide an example, but I don't know enough details on your > > situation to give something useful :) > > > > 2009/7/3 Angelo Anolin <angelo_anolin@ yahoo.com>: > >> > >> > >> Hi Sam, > >> > >> Care to show some examples? I am parsing the arrayCollection into an > >> ArrayList on .NET.� This is particularly not too appealing since I just > >> discovered that for example, if one of the objects in the arraycollection > >> would have an empty string value, the number of items inside the array is > >> not reflected properly in .NET. > >> > >> Like: > >> > >> private var arrR:ArrayCollectio n = new ArrayCollection( [{ID:"001" , > >> Value:"Select" }, > >> ��������������������������������������������������������{ID:"002", > >> Value:"Choose" }, > >> ������������������������������������������������������� > >> {ID:"003", > >> Value:""},]) ; > >> > >> When I pass this var arrR into a .NET webservice and delegate it to an > >> ArrayList, the items in the array list will have one of the arrays only > >> containing 1 item (instead of 2). > >> > >> Adding to my problem is the fact that the arrays inside the array list > >> when > >> read in .NET should have the object ID and Value be in order but they are > >> not.� This is further true when there are many items in the array > >> collection.� Sometimes, the first item becomes the last one in the array > >> list, and sometimes the order is not well. > >> > >> In any case, I am finding a solution on how I would be able to pass an > >> ArrayCollection to .NET and be able to parse it properly. > >> > >> Thanks. > >> > >> ____________ _________ _________ __ > >> From: Sam Lai <samuel.lai@ gmail. com> > >> To: flexcod...@yahoogro ups.com > >> Sent: Thursday, 2 July, 2009 15:46:58 > >> Subject: Re: [flexcoders] ArrayCollection Does Not Show Items In Order > >> When > >> Passed to .NET WebService > >> > >> How is it being parsed in .NET? You can parse it into a hashtable, or > >> better yet, use a pre-defined object. > >> > >> Not sure why the order is different, but it is probably fragile to > >> rely on the order in this case. > >> > >> 2009/7/2 Angelo Anolin <angelo_anolin@ yahoo.com>: > >>> > >>> > >>> Hi FlexCoders, > >>> > >>> I have an array collection which I am populating as follows: > >>> > >>> var oTemp:Object; > >>> var xl:XMLList = _xmlData.children( ); > >>> var i:int; > >>> for(i = 0; i < xl.length(); i++) > >>> { > >>> �oTemp = {ID_TAG:xl[i] .ID.text( ), CAT_TAG:xl[i] .CAT.text( ), > >>> DET_TAG:xl[i] .DET.text( ), REP_DATE_TAG: xl[i].REP_ DATE.text( ), > >>> IND_TAG:xl[i] .IND.text( )}; > >>> �arrDP.addItem( oTemp); > >>> } > >>> Now, when I pass back this Array Collection back into a web service, the > >>> fields are not in order as I have added them into the array collection. > >>> > >>> I am expecting that in my Web Service, when I parse this arraycollection > >>> (via arraylist), I would be getting the same order of columns as I have > >>> added them, i.e. the first array in the array list would have element 0 > >>> to > >>> be the value I placed in the ID. > >>> > >>> Since the arraylist does not have the field tag (represented by ID_TAG, > >>> DET_TAG, CAT_TAG, etc..), it becomes a trial and error (hit and miss) on > >>> my > >>> part since I can only reference the value via the index on the array. > >>> > >>> Now, how would I be able to include the tags inside array collection such > >>> that when I read them as an array list in my .NET webservice, I know > >>> which > >>> element I am referring to in a particular index. > >>> > >>> Thanks. > >>> > >>> Regards, > >>> Angelo > >>> > >>> > >>> > >> > >> > >> > >> > > > > > > > > >
