Type.GetField Method (String)

 

Searches for the public field with the specified name.

Namespace:   System
Assembly:  mscorlib (in mscorlib.dll)

Public Function GetField (
	name As String
) As FieldInfo

Parameters

name
Type: System.String

The string containing the name of the data field to get.

Return Value

Type: System.Reflection.FieldInfo

An object representing the public field with the specified name, if found; otherwise, null.

Exception Condition
ArgumentNullException

name is null.

NotSupportedException

This Type object is a TypeBuilder whose CreateType method has not yet been called.

The search for name is case-sensitive. The search includes public static and public instance fields.

If the current Type represents a constructed generic type, this method returns the FieldInfo with the type parameters replaced by the appropriate type arguments.

If the current Type represents a type parameter in the definition of a generic type or generic method, this method searches the fields of the class constraint.

The following example gets the Type object for the specified class, obtains the FieldInfo object for the field, and displays the value of the field.


Imports System
Imports System.Reflection
Imports Microsoft.VisualBasic

Public Class MyFieldClassA
    Public Field As String = "A Field"
End Class 'MyFieldClassA

Public Class MyFieldClassB
    Private myField As String = "B Field"

    Public Property Field() As String
        Get
            Return myField
        End Get
        Set(ByVal Value As String)
            If myField <> value Then
                myField = value
            End If
        End Set
    End Property
End Class 'MyFieldClassB


Public Class MyFieldInfoClass

    Public Shared Sub Main()
        Dim myFieldObjectB As New MyFieldClassB()
        Dim myFieldObjectA As New MyFieldClassA()

        Dim myTypeA As Type = GetType(MyFieldClassA)
        Dim myFieldInfo As FieldInfo = myTypeA.GetField("Field")

        Dim myTypeB As Type = GetType(MyFieldClassB)
        Dim myFieldInfo1 As FieldInfo = myTypeB.GetField("myField", _
            BindingFlags.NonPublic Or BindingFlags.Instance)

        Console.WriteLine("The value of the public field is: '{0}'", _
            myFieldInfo.GetValue(myFieldObjectA))
        Console.WriteLine("The value of the private field is: '{0}'", _
            myFieldInfo1.GetValue(myFieldObjectB))
    End Sub 'Main

End Class 'MyFieldInfoClass

.NET Framework
Available since 1.1
Portable Class Library
Supported in: portable .NET platforms
Silverlight
Available since 2.0
Windows Phone Silverlight
Available since 7.0
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