' NOTE: You can use the "Rename" command on the context menu to change the interface name "IService" in both code and config file together. Public Interface IService Function GetData(ByVal value As Integer) As String Function GetDataUsingDataContract(ByVal composite As CompositeType) As CompositeType ' TODO: Add your service operations here End Interface ' Use a data contract as illustrated in the sample below to add composite types to service operations. Public Class CompositeType Public Property BoolValue() As Boolean Public Property StringValue() As String End Class