ASP.NET Tutorial/Custom Controls/Designer attribute

Adding a Designer attribute to a control class (C#)

using System;
using System.Collections.Generic;
using System.ruponentModel;
using System.Text;
using System.Web.UI;
using System.Web.UI.WebControls;
namespace WebControlLibrary1
{
    [DefaultProperty("Text")]
    [ToolboxData("<{0}:WebCustomControl1 runat=server></{0}:WebCustomControl1>")]
    [Designer(typeof(ControlDesigner))]
    public class WebCustomControl1 : WebControl
    {
        private string text;
        [Bindable(true)]
        [Category("Appearance")]
        [DefaultValue("")]
        public string Text
        {
            get
            {
                return text;
            }
            set
            {
                text = value;
            }
        }
        protected override void Render(HtmlTextWriter output)
        {
            output.RenderBeginTag(HtmlTextWriterTag.Input);
            output.RenderEndTag();
        }
    }
}

Adding a Designer attribute to a control class (VB)

Imports System.ruponentModel
Imports System.Web.UI
Imports System.Web.UI.Design
Imports System.ruponentModel.Design
<DefaultProperty("Text")> _
<ToolboxData("<{0}:[WebCustomControl1] runat=server></{0}:[WebCustomControl1]>")> _
<Designer(GetType(ControlDesigner))> _
Public Class [WebCustomControl1]
    Inherits System.Web.UI.WebControls.WebControl
    Dim _text As String
    <Bindable(True), Category("Appearance"), DefaultValue("")> _
    Property [Text]() As String
        Get
            Return _text
        End Get
        Set(ByVal Value As String)
            _text = Value
        End Set
    End Property
    Protected Overrides Sub Render(ByVal output As System.Web.UI.HtmlTextWriter)
        output.RenderBeginTag(HtmlTextWriterTag.Input)
        output.RenderEndTag()
    End Sub
End Class