partial class does not initialize class scope variable.

Question

Hello

I have a question. I have a partial class in two .cs files. One of them is generated by a web service proxy as "reference.cs" and other one i added in order to implement class behaviour. But class scope variables in the second file is not initialized. Some code here:

    public partial class ListSelector
    {
        GorevveIsTakipServisiSoapClient svc = new GorevveIsTakipServisiSoapClient();
        string simplevar = string.Empty;

        public void kol()
        {
            //following line generates null exception in sv variable. In addition, simplevar variable seems null too when i check it.
            svc.ListPairOfIntStringCompleted += new EventHandler<ListPairOfIntStringCompletedEventArgs>(svc_ListPairOfIntStringCompleted);
        }

        void svc_ListPairOfIntStringCompleted(object sender, ListPairOfIntStringCompletedEventArgs e)
        {
            //...
        }
    }

This is not a problem but just wondering. Thanks!

Answer 1

Is this perhaps an object created by WCF? (i.e. returned from a method etc). WCF (specifically, `DataContractSerializer`) does not call any constructor (strange but true). To do any extra initialization of a WCF object (usually data-contract etc), you must use a serialization callback; i.e. `[OnDeserialized]`

---

Marc [C# MVP]

Answer 2

Thanks Marc.