I have a Function.dll which includes several function. I tried to add the following:

    Public Shared Function FindControlByFieldName(ByVal frm As Form, ByVal name As String) As Object
        Dim t As System.Type = frm.GetType()

        Dim pi As System.Reflection.PropertyInfo = _
            t.GetProperty(name, _
                System.Reflection.BindingFlags.Public Or _
                System.Reflection.BindingFlags.NonPublic Or _
                System.Reflection.BindingFlags.Instance Or _
                System.Reflection.BindingFlags.DeclaredOnly)

        If Not pi Is Nothing Then
            Return pi.GetValue(frm, Nothing)
        End If

        Dim fi As System.Reflection.FieldInfo = _
            t.GetField(name, _
                System.Reflection.BindingFlags.Public Or _
                System.Reflection.BindingFlags.NonPublic Or _
                System.Reflection.BindingFlags.Instance Or _
                System.Reflection.BindingFlags.DeclaredOnly)

        If fi Is Nothing Then
            Return Nothing
        End If

        Return fi.GetValue(frm)
    End Function

Once added, the Form parameter is underlined which demonstrates an error. Anyone would know what I have to do when adding this function in a class to avoid the error? When I include it in my Form, I don't have any problem.