FieldInfo.IsInitOnly Property tells whether the field can only be set in the body of the constructor. : FieldInfo « Reflection « VB.Net

1. VB.Net
2. Reflection
3. FieldInfo

FieldInfo.IsInitOnly Property tells whether the field can only be set in the body of the constructor.

 
Imports System
Imports System.Reflection
Imports Microsoft.VisualBasic

Public Class Myfielda
    Public field As String = "public modifiable field"
End Class 'Myfielda

Public Class Myfieldb
    Public ReadOnly field As String = "readonly field"
End Class 'Myfieldb

Public Class Myfieldinfo
    Public Shared Function Main() As Integer
        Dim Myfielda As New Myfielda()
        Dim Myfieldb As New Myfieldb()

        Dim MyTypea As Type = GetType(Myfielda)
        Dim Myfieldinfoa As FieldInfo = MyTypea.GetField("field",BindingFlags.Public Or BindingFlags.Instance)
        Dim MyTypeb As Type = GetType(Myfieldb)
        Dim Myfieldinfob As FieldInfo = MyTypeb.GetField("field",BindingFlags.Public Or BindingFlags.Instance)

        Myfielda.field = "A - modified"
        Console.WriteLine(MyTypea.FullName)
        Console.WriteLine(Myfieldinfoa.GetValue(Myfielda))
        Console.WriteLine(Myfieldinfoa.IsInitOnly)
        Console.WriteLine(MyTypeb.FullName)
        Console.WriteLine(Myfieldinfob.GetValue(Myfieldb))
        Console.WriteLine(Myfieldinfob.IsInitOnly)

        Return 0
    End Function 'Main
End Class 'Myfieldinfo

   
  

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