M(y)Elwood

[DllImport("WININET", CharSet = CharSet.Auto)]
static extern bool InternetGetConnectedState(int lpdwFlags, int dwReserved);

public bool CheckInternetConnection()
{
	return InternetGetConnectedState(0, 0);
}

Um eine Enumeration in einem WCF Sefvice an den Client zu übertragen, muss das [ServiceKnownType(typeof(Enum))] Attribute in den Service Contract eingefügt werden:

namespace TestService.Interfaces
{
    [ServiceContract]
    [ServiceKnownType(typeof(MyEnum))]
    public interface ITestService
    {
        [OperationContract]
        ....
    }
}

Die Enumeration sieht dann so aus:

namespace TestService.Classes
{
 	[DataContract]
	public enum MyEnum
	{
		[EnumMember]
		Undefined = 0,

		[EnumMember]
		 Okay = 1,

		[EnumMember]
		Error = 2
	}

    [DataContract]
	public class MyClass
    {
		...
	}
}