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c#sql-serversilverlightwcf
Irakli Lekishvili
Irakli Lekishvili

Reputation: 34198

silverlight enabled wcf service cannot return list

hello guys i built wcf service i have two methods insert and get(which must return list) inserts method works correctly

This is get method:

 public List<string> GetUsersList() 
        {
            csmasterDataContext db = new csmasterDataContext();
            List<string> _uList = new List<string>();
            _uList = (from d in db.users select d.username).ToList();
            return _uList;
        }

when i call this method like this :

 List<string> _UserList = new List<string>();

            _UserList = webService.GetUsersListAsync();

visual studio gives error:

Cannot implicitly convert type 'void' to 'System.Collections.Generic.List<string>'

Does anyone have a idea what is my problem?

Upvotes: 0

Views: 782

Answers (1)

Mohamed Abed
Mohamed Abed

Reputation: 5123

Async call of web service is asynchronous it does not return a value... you have to call it like this

webService.GetUsersListAsyncCompleted += 
      new EventHandler<GetUsersListEventArgs> (GetUsersListCompleted);

webService.GetUsersListAsync();

void GetUsersListCompleted(object sender, GetUsersListEventArgs e)
{
    // Set your return here
    usersList = e.Result;
}

check this and this

Upvotes: 4

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