FieldDirection Enum

Definition

public enum class FieldDirection

public enum FieldDirection

[System.Runtime.InteropServices.ComVisible(true)]
[System.Serializable]
public enum FieldDirection

type FieldDirection = 

[<System.Runtime.InteropServices.ComVisible(true)>]
[<System.Serializable>]
type FieldDirection = 

Public Enum FieldDirection

Arv

Object

ValueType

Enum

FieldDirection

Attribut

ComVisibleAttribute SerializableAttribute

Fält

Exempel

I följande exempel visas hur du använder FieldDirection för att ange fältriktningstyperna för parametrarna för en metod i en metoddeklaration.

// Declares a method.
CodeMemberMethod method1 = new CodeMemberMethod();
method1.Name = "TestMethod";

// Declares a string parameter passed by reference.
CodeParameterDeclarationExpression param1 = new CodeParameterDeclarationExpression("System.String", "stringParam");
param1.Direction = FieldDirection.Ref;
method1.Parameters.Add(param1);

// Declares a Int32 parameter passed by incoming field.
CodeParameterDeclarationExpression param2 = new CodeParameterDeclarationExpression("System.Int32", "intParam");
param2.Direction = FieldDirection.Out;
method1.Parameters.Add(param2);

// A C# code generator produces the following source code for the preceeding example code:

//        private void TestMethod(ref string stringParam, out int intParam) {
//        }

           ' Declares a method.
           Dim method1 As New CodeMemberMethod()
           method1.Name = "TestMethod"

           ' Declares a string parameter passed by reference.
           Dim param1 As New CodeParameterDeclarationExpression("System.String", "stringParam")
           param1.Direction = FieldDirection.Ref
           method1.Parameters.Add(param1)

           ' Declares a Int32 parameter passed by incoming field.
           Dim param2 As New CodeParameterDeclarationExpression("System.Int32", "intParam")
           param2.Direction = FieldDirection.Out
           method1.Parameters.Add(param2)

           ' A Visual Basic code generator produces the following source code for the preceeding example code:

           '	 Private Sub TestMethod(ByRef stringParam As String, ByRef intParam As Integer)
           '    End Sub

Kommentarer

FieldDirection tillåter att argument skickas till funktioner med referens eller med hjälp av inkommande eller utgående parametrar.

Se även

• CodeParameterDeclarationExpression
• CodeDirectionExpression