How Do I reference composite types in my App

[Bill Crawley]

Hi All,

I followed the Microsoft example in my WCF Interface.

[ServiceContract]
    public interface IRS
    {
        [OperationContract]
        Boolean MergeData(CompositeType filenameList);.......

[DataContract]
    public class CompositeType
    {
      
        [DataMember]
        public List<String> filenameList { get ; set ; }........

Now in my client code where I'm using trying to use the wcf service I have:

List<String> localLockton = new List<String>(workLockton);
myService.IRS objIRS;
objIRS.MergeData(localLockton);

however, in the final line. I receive an error : The best overloaded method match for myService.IRS.MergeData(myService.CompositeType) has some invalid arguments.

Followed by Argument 1: cannot convert from System.Collection.Generic.List<string> to myService.CompositeType.

I thought that in my interface of wcf by declaring it mergedata with compositeType I was enforcing the type to be passed.

If I change my client code to:

myService.IRS objIRS;
            myService.CompositeType myList;
            myList.filenameList = localLockton;            objIRS.MergeData(myList);

I receive an arror on the above line with: cannot implicitly convert type System.Collections.Generic.List<string> to string[]

[Bill Crawley]

Ok,

I found that I needed to re-reference my WCF Service and change the type expected to be passed in the Adavance Settings. This has now cured the problem , however, I'm now having difficulty instanciating and using the Interface.

MyService.CompositeType myList = new MyService.CompositeType();
myList.filenameList = localLockton;
MyService.IRS objIRS;
objIRS.MergeData(myList);

I get the error: Use of unassigned local variable objIRS. How do I instantiate the interface.?