Question

I have a wcf service which has a method as follow:

 public void SyncClient(List<Client> client)
        {
         }

then i call this in a lib solution which has reference to this service as follow:

WCF.SyncClient wcfSer = new WCF.SyncClient();
 List<Client> clientModified = secondservice.Get_Clients(ModifiedDate, modifiedUnt).ToList();
wcfSer.SyncClient(clientModified);

but I keep on getting the following error :

The best overloaded method match for 'SyncClient(SyncLib.ClientWCF.Client[])' has some invalid arguments    
cannot convert from 'System.Collections.Generic.List<SyncLib.Client>' to 'SyncLib.WCF.Client[]'

The only thing I am doing is getting the list populated with another web service.

what is the problem here as the argument that I am passing is list and the method accepts list, can some one please point me to right direction.

Answer 1

This is down to how you added the service reference.

You can either amend your code to send client[]

WCF.SyncClient wcfSer = new WCF.SyncClient();
 var clientModified = secondservice.Get_Clients(ModifiedDate,
    modifiedUnt).ToArray();
wcfSer.SyncClient(clientModified);

or re-add the reference and select the option to use System.Collection.Generic.List as below;

Select Add Reference
Select URL
Select Advanced when you have found the service.
In Datatype, you will see these options.

Select Collection Type as System.Collection.Generic.List