ServiceKnownTypeAttribute 建構函式

定義

命名空間:

System.ServiceModel

組件:

System.ServiceModel.Primitives.dll

套件:

System.ServiceModel.Primitives v8.0.0

初始化 ServiceKnownTypeAttribute 類別的新執行個體。

多載

ServiceKnownTypeAttribute(String)	初始化 ServiceKnownTypeAttribute 類別的新執行個體，並指定傳回已知型別的方法名稱。
ServiceKnownTypeAttribute(Type)	使用指定的已知型別來初始化 ServiceKnownTypeAttribute 類別的新執行個體。
ServiceKnownTypeAttribute(String, Type)	使用傳回已知型別的方法名稱和包含傳回已知型別之方法的型別，初始化 ServiceKnownTypeAttribute 類別的新執行個體。

ServiceKnownTypeAttribute(String)

來源:

ServiceKnownTypeAttribute.cs

初始化 ServiceKnownTypeAttribute 類別的新執行個體，並指定傳回已知型別的方法名稱。

public:
 ServiceKnownTypeAttribute(System::String ^ methodName);

public ServiceKnownTypeAttribute (string methodName);

new System.ServiceModel.ServiceKnownTypeAttribute : string -> System.ServiceModel.ServiceKnownTypeAttribute

Public Sub New (methodName As String)

參數

methodName

String

傳回已知型別的方法名稱。

備註

將 套用 ServiceKnownTypeAttribute 至包含傳回已知型別之方法的類別時，請使用這個建構函式。

另請參閱

• DeclaringType
• MethodName

ServiceKnownTypeAttribute(Type)

來源:

ServiceKnownTypeAttribute.cs

使用指定的已知型別來初始化 ServiceKnownTypeAttribute 類別的新執行個體。

public:
 ServiceKnownTypeAttribute(Type ^ type);

public ServiceKnownTypeAttribute (Type type);

new System.ServiceModel.ServiceKnownTypeAttribute : Type -> System.ServiceModel.ServiceKnownTypeAttribute

Public Sub New (type As Type)

參數

type

Type

指定可用於該服務定義之參數或傳回值中的已知型別。

範例

下列範例會將 ServiceKnownTypeAttribute 屬性套用至介面，其中 屬性會指定要包含的類型。

// Apply the ServiceKnownTypeAttribute to the
// interface specifying the type to include. Apply
// the attribute more than once if needed.
[ServiceKnownType(typeof(Widget))]
[ServiceKnownType(typeof(Machine))]
[ServiceContract()]
public interface ICatalog2
{
    // Any object type can be inserted into a Hashtable. The
    // ServiceKnownTypeAttribute allows you to include those types
    // with the client code.
    [OperationContract]
    Hashtable GetItems();
}

' Apply the ServiceKnownTypeAttribute to the 
' interface specifying the type to include. Apply the attribute
' more than once, if needed.
<ServiceKnownType(GetType(Widget)), ServiceKnownType(GetType(Machine)), _
 ServiceContract()>  _
Public Interface ICalculator2
    ' Any object type can be inserted into a Hashtable. The 
    ' ServiceKnownTypeAttribute allows you to include those types
    ' with the client code.
    <OperationContract()>  _
    Function GetItems() As Hashtable 
End Interface

備註

ServiceKnownTypeAttribute可以多次套用至 方法，每個應用程式都會命名不同的已知類型，這些類型可能存在於 方法所傳回的物件圖形中。

ServiceKnownTypeAttribute(String, Type)

來源:

ServiceKnownTypeAttribute.cs

使用傳回已知型別的方法名稱和包含傳回已知型別之方法的型別，初始化 ServiceKnownTypeAttribute 類別的新執行個體。

public:
 ServiceKnownTypeAttribute(System::String ^ methodName, Type ^ declaringType);

public ServiceKnownTypeAttribute (string methodName, Type declaringType);

new System.ServiceModel.ServiceKnownTypeAttribute : string * Type -> System.ServiceModel.ServiceKnownTypeAttribute

Public Sub New (methodName As String, declaringType As Type)

參數

methodName

String

傳回已知型別的方法名稱。

declaringType

Type

可在其物件圖形中使用已知型別的型別。

範例

下列範例會將 ServiceKnownTypeAttribute 屬性套用至介面，其中 屬性會指定方法名稱和宣告型別。

// Define a service contract and apply the ServiceKnownTypeAttribute
// to specify types to include when generating client code.
// The types must have the DataContractAttribute and DataMemberAttribute
// applied to be serialized and deserialized. The attribute specifies the
// name of a method (GetKnownTypes) in a class (Helper) defined below.
[ServiceKnownType("GetKnownTypes", typeof(Helper))]
[ServiceContract()]
public interface ICatalog
{
    // Any object type can be inserted into a Hashtable. The
    // ServiceKnownTypeAttribute allows you to include those types
    // with the client code.
    [OperationContract]
    Hashtable GetItems();
}

// This class has the method named GetKnownTypes that returns a generic IEnumerable.
static class Helper
{
    public static IEnumerable<Type> GetKnownTypes(ICustomAttributeProvider provider)
    {
        System.Collections.Generic.List<System.Type> knownTypes =
            new System.Collections.Generic.List<System.Type>();
        // Add any types to include here.
        knownTypes.Add(typeof(Widget));
        knownTypes.Add(typeof(Machine));
        return knownTypes;
    }
}

[DataContract()]
public class Widget
{
    [DataMember]
    public string Id;
    [DataMember]
    public string Catalog;
}

[DataContract()]
public class Machine : Widget
{
    [DataMember]
    public string Maker;
}

' Define a service contract and apply the ServiceKnownTypeAttribute
' to specify types to include when generating client code. 
' The types must have the DataContractAttribute and DataMemberAttribute
' applied to be serialized and deserialized. The attribute specifies the 
' name of a method (GetKnownTypes) in a class (Helper) defined below.
<ServiceKnownType("GetKnownTypes", GetType(Helper)), ServiceContract()>  _
Public Interface ICalculator
    ' Any object type can be inserted into a Hashtable. The 
    ' ServiceKnownTypeAttribute allows you to include those types
    ' with the client code.
    <OperationContract()>  _
    Function GetItems() As Hashtable 
End Interface 

' This class has the method named GetKnownTypes that returns a generic IEnumerable.
Friend Class Helper
    Public Shared  Function GetKnownTypes(provider As ICustomAttributeProvider) _
     As IEnumerable(of Type) 
        Dim knownTypes As List(Of Type) = New List(Of Type)
        ' Add any types to include here.
        knownTypes.Add(GetType(Widget))
        knownTypes.Add(GetType(Machine))
        Return knownTypes
    End Function 
End Class 

<DataContract()>  _
Public Class Widget
    <DataMember()>  _
    Public Id As String
    <DataMember()>  _
    Public Catalog As String
End Class 

<DataContract()>  _
Public Class Machine
    Inherits Widget
    <DataMember()>  _
    Public Maker As String
End Class

另請參閱

• DeclaringType
• MethodName