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Asked: 2026-05-11T05:20:35+00:00

Using ASP.NET WebServices, by default you can’t pass any IDictionary objects, because xml serialization

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Using ASP.NET WebServices, by default you can’t pass any IDictionary objects, because xml serialization for IDictionaries isn’t supported. I have found various ways to serialized dictionaries (http://weblogs.asp.net/pwelter34/archive/2006/05/03/444961.aspx, http://blogs.msdn.com/psheill/archive/2005/04/09/406823.aspx, http://www.mattberther.com/2004/06/14/serializing-an-idictionary-object/) but, I can’t find any way to hook this into the Asp.NET web methods.

Is there a way to hook it up so that I can use IDictionaries with WebMethods?

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  1. depends on how you are calling these methods, we use the .net 2.0 method with ‘web references’ and you will notice that the WSDL generated class is a partial, we create a (web reference name).cs file and have something like:

     public partial class WebReferenceName : System.Web.Services.Protocols.SoapHttpClientProtocol  {     // Overload the WSDL generated method that only takes a simple array     public ReturnType MethodName(List  collection)     {         // redirect the call to the wsdl generated method with the appropriate parameters         return this.MethodName(collection.ToArray());     } }

    Overloading will allow you to call the method name with either type of collection

    At the web service side you can convert from a simple collection back to a more powerful collection, most likely with the use of that more powerful collections ctor. One of the ctors will probably consume a simple collection.

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