Specific property is disabled in design mode

Question

User-2057043396 posted

Hi all,

I'm new in creating user web controls. Then, I created the following simple code:

Imports System
Imports System.Collections.Generic
Imports System.ComponentModel
Imports System.Linq
Imports System.Text
Imports System.Web
Imports System.Web.UI
Imports System.Web.UI.WebControls
Imports System.Drawing

<DefaultProperty("Text"), ToolboxData("<{0}:MyButton runat=server></{0}:MyButton>"), _
                          ToolboxBitmap("D:\ValMark\Projetos\Pacotes\WEBEHS\ValMark Controls\Controls\MyButton\MyButton.bmp")>
Public Class MyButton
    Inherits Button

    Private _Test As String

    Public Sub New()

        Width = 150
        Text = "0"
        BackColor = Color.Yellow

    End Sub

    <Bindable(True), _
    Category("Appearance"), _
    DefaultValue(""), _
    Localizable(True)> _
    Public Property Test()
        Get
            Return _Test
        End Get
        Set(value)
            _Test = value
        End Set
    End Property

    Protected Overrides Sub OnClick(e As EventArgs)

        Dim num As Integer = Integer.Parse(Me.Text) + 1
        Me.Text = num.ToString

    End Sub

End Class

There is a specific property called "Test". When I put my web control in a page, this property was disabled, as below:

What am I doing wrong?

Thanks in advance,

Camarate

Answer 1

User753101303 posted

Hi,

Is this better with Public Property Test As String so that the type is known rather than being Object ?

Not directly related but with https://docs.microsoft.com/en-us/dotnet/visual-basic/programming-guide/language-features/procedures/auto-implemented-properties you could shorten property declaration if are doing nothing else than reading/writing to an underlying field.