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| Guest | WCF converts List<string> to string[] I'm having a problem passing List<T> from a service. I don't know if the problem is at the service or the client. For some reason a List is getting converted to an array. Here are the details: I have a simple type called SimpleType that contains a List: [DataContract] public class SimpleType { [DataMember] public List<string> Strings { get { return strings; } set { strings = value; } } private List<string> strings; } The service code is equally simple: public SimpleType GetSimpleType() { return new SimpleType(); } The client creates the following code for SimpleType's List: [System.Runtime.Serialization.DataMemberAttribute()] public string[] Strings { get { return this.StringsField; } set { this.StringsField = value; } } Is there something I need to do to have a List created at the client rather than an array? Is there a property I forgot to set somewhere? Thanks, John |
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| Guest | Re: WCF converts List<string> to string[] "John" <revelation@nospam.nospam> wrote > I'm having a problem passing List<T> from a service. > [DataMember] > public List<string> Strings > { > get { return strings; } > set { strings = value; } > } If nothing else, this code won't pass any of the Static Code Analysis tools. You should be exposing the IList<> interface, or one of the System.Collections.ObjectModel collections. Requiring things via your interface (especially one exposed on the web) to be an actual List<> class is bad form. -- Chris Mullins, MCSD.NET, MCPD:Enterprise http://www.coversant.net/blogs/cmullins |
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| Guest | Re: WCF converts List<string> to string[] Thank you for the critique, Chris. This was only a simple example to demonstrate the problem I'm having. But I welcome any constructive advice you can provide. If you can recommend some good material on the subject I would appreciate it. But now back to my problem... I've tried List<>, IList, ArrayList and even System.Collections.ObjectModel.Collection. In all cases the client builds a proxy containing a simple array. I would like it to create something more useful than an array. Is that possible? John "Chris Mullins" <cmullins@yahoo.com> wrote in message news:uXzJpzS$GHA.1168@TK2MSFTNGP03.phx.gbl... > "John" <revelation@nospam.nospam> wrote >> I'm having a problem passing List<T> from a service. > >> [DataMember] >> public List<string> Strings >> { >> get { return strings; } >> set { strings = value; } >> } > > If nothing else, this code won't pass any of the Static Code Analysis > tools. You should be exposing the IList<> interface, or one of the > System.Collections.ObjectModel collections. Requiring things via your > interface (especially one exposed on the web) to be an actual List<> class > is bad form. > > -- > Chris Mullins, MCSD.NET, MCPD:Enterprise > http://www.coversant.net/blogs/cmullins > > |
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| Newbie Rep Power: 3 ![]() | Re: WCF converts List<string> to string[] |
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