FieldDirection Enum
Definition
Important
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Defines identifiers used to indicate the direction of parameter and argument declarations.
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
- Inheritance
- Attributes
Fields
In | 0 | An incoming field. |
Out | 1 | An outgoing field. |
Ref | 2 | A field by reference. |
Examples
The following example demonstrates use of FieldDirection to indicate the field direction types of the parameters of a method in a method declaration.
// Declares a method.
CodeMemberMethod^ method1 = gcnew CodeMemberMethod;
method1->Name = "TestMethod";
// Declares a string parameter passed by reference.
CodeParameterDeclarationExpression^ param1 = gcnew CodeParameterDeclarationExpression( "System.String","stringParam" );
param1->Direction = FieldDirection::Ref;
method1->Parameters->Add( param1 );
// Declares a Int32 parameter passed by incoming field.
CodeParameterDeclarationExpression^ param2 = gcnew 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.
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
Remarks
FieldDirection allows for passing arguments to functions by reference, or using incoming or outgoing parameters.
Applies to
See also
.NET
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