[OperationContractAttribute(Action = "http://tempuri.org/IService1/GetLetterTypes", 
	ReplyAction = "http://tempuri.org/IService1/GetLetterTypesResponse")]
DataSet GetLetterTypes(
	string key
)

<OperationContractAttribute(Action := "http://tempuri.org/IService1/GetLetterTypes", 
	ReplyAction := "http://tempuri.org/IService1/GetLetterTypesResponse")>
Function GetLetterTypes ( 
	key As String
) As DataSet

[OperationContractAttribute(Action = L"http://tempuri.org/IService1/GetLetterTypes", 
	ReplyAction = L"http://tempuri.org/IService1/GetLetterTypesResponse")]
DataSet^ GetLetterTypes(
	String^ key
)

[<OperationContractAttribute(Action = "http://tempuri.org/IService1/GetLetterTypes", 
	ReplyAction = "http://tempuri.org/IService1/GetLetterTypesResponse")>]
abstract GetLetterTypes : 
        key : string -> DataSet