<ParseChildrenAttribute(False)> _
<SupportsAttributeMarkupAttribute(False)> _
<XmlRootAttribute(Namespace:="http://schemas.microsoft.com/WebPart/v2")> _
<XmlTypeAttribute("Microsoft.SharePoint.WebPartPages.WebPart", Namespace:="http://schemas.microsoft.com/WebPart/v2")> _
<AspNetHostingPermissionAttribute(SecurityAction.InheritanceDemand, Level:=AspNetHostingPermissionLevel.Minimal)> _
<AspNetHostingPermissionAttribute(SecurityAction.LinkDemand, Level:=AspNetHostingPermissionLevel.Minimal)> _
Public MustInherit Class WebPart
    Inherits WebPart
    Implements INamingContainer, IAttributeAccessor, IConnectionData

Dim instance As WebPart

[ParseChildrenAttribute(false)] 
[SupportsAttributeMarkupAttribute(false)] 
[XmlRootAttribute(Namespace="http://schemas.microsoft.com/WebPart/v2")] 
[XmlTypeAttribute("Microsoft.SharePoint.WebPartPages.WebPart", Namespace="http://schemas.microsoft.com/WebPart/v2")] 
[AspNetHostingPermissionAttribute(SecurityAction.InheritanceDemand, Level=AspNetHostingPermissionLevel.Minimal)] 
[AspNetHostingPermissionAttribute(SecurityAction.LinkDemand, Level=AspNetHostingPermissionLevel.Minimal)] 
public abstract class WebPart : WebPart, INamingContainer, IAttributeAccessor, IConnectionData

Imports System
Imports System.ComponentModel
Imports System.Runtime.InteropServices
Imports System.Web.UI
Imports System.Web.UI.WebControls
Imports System.Xml.Serialization
Imports Microsoft.SharePoint
Imports Microsoft.SharePoint.WebPartPages
Imports Microsoft.SharePoint.Utilities
Imports System.Web.UI.HtmlControls

Namespace WebPartLibrary1
   ' This Web Part changes it's own title and implements a custom property.
   <XmlRoot([Namespace] := "WebPartLibrary1")>  _
   Public Class SimpleWebPart
      Inherits WebPart
      Private Const defaultText As String = "hello"
      Private [text] As String = defaultText

      ' Declare variables for HtmlControls user interface elements.
      Private _mybutton As HtmlButton
      Private _mytextbox As HtmlInputText      

      ' Event handler for _mybutton control that sets the
      ' Title property to the value in _mytextbox control.
      Public Sub _mybutton_click(sender As Object, e As EventArgs)
         Me.Title = _mytextbox.Value
         Try
            Me.SaveProperties = True
         Catch Else
            Caption = "Error... Could not save property."
         End Try
      End Sub      

      ' Override the ASP.NET Web.UI.Controls.CreateChildControls 
      ' method to create the objects for the Web Part's controls.      
      Protected Overrides Sub CreateChildControls()
         ' Create _mytextbox control.
         _mytextbox = New HtmlInputText()
         _mytextbox.Value = ""
         Controls.Add(_mytextbox)

         ' Create _mybutton control and wire its event handler.
         _mybutton = New HtmlButton()
         _mybutton.InnerText = "Set Web Part Title"
         AddHandler _mybutton.ServerClick, AddressOf _mybutton_click
         Controls.Add(_mybutton)
      End Sub      

      <Browsable(True), Category("Miscellaneous"), DefaultValue(defaultText), WebPartStorage(Storage.Personal), FriendlyName("Text"), Description("Text Property")>  _
      Public Property [Text]() As String
         Get
            Return [text]
         End Get

         Set
            [text] = value
         End Set
      End Property      

      Protected Overrides Sub RenderWebPart(output As HtmlTextWriter)
         RenderChildren(output)
         ' Securely write out HTML
         output.Write(("<BR>Text Property: " + SPEncode.HtmlEncode([Text])))
      End Sub
   End Class
End Namespace

//--------------------------------------------------------------------
// File: SimpleWebPart.cs
//
// Purpose: A sample Web Part that demonstrates how to create a basic
// Web Part.
//--------------------------------------------------------------------

using System;
using System.ComponentModel;
using System.Runtime.InteropServices;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Xml.Serialization;
using Microsoft.SharePoint;
using Microsoft.SharePoint.WebPartPages;
using Microsoft.SharePoint.Utilities;
using System.Web.UI.HtmlControls;

namespace WebPartLibrary1
{
    /// <summary>
    /// This Web Part changes its title and implements a custom property.
    /// </summary>
    [XmlRoot(Namespace="WebPartLibrary1")]    
    public class SimpleWebPart : WebPart
    {
        private const string defaultText = "hello";
        private string text=defaultText;

        // Declare variables for HtmlControls user interface elements.
        HtmlButton _mybutton;
        HtmlInputText _mytextbox;

        // Event handler for _mybutton control that sets the
        // Title property to the value in _mytextbox control.
        public void _mybutton_click (object sender, EventArgs e)
        {
            this.Title = _mytextbox.Value;
            try
            {
                this.SaveProperties=true;
            }
            catch
            {
                Caption = "Error... Could not save property.";
            }
        }

        // Override the ASP.NET Web.UI.Controls.CreateChildControls 
        // method to create the objects for the Web Part's controls.      
        protected override void CreateChildControls ()
        {         
            // Create _mytextbox control.
            _mytextbox = new HtmlInputText();
            _mytextbox.Value="";
            Controls.Add(_mytextbox);

            // Create _mybutton control and wire its event handler.
            _mybutton = new HtmlButton();
            _mybutton.InnerText = "Set Web Part Title";
            _mybutton.ServerClick += new EventHandler (_mybutton_click);
            Controls.Add (_mybutton);
        }

        [Browsable(true),Category("Miscellaneous"),
        DefaultValue(defaultText),
        WebPartStorage(Storage.Personal),
        FriendlyName("Text"),Description("Text Property")]
        public string Text
        {
            get
            {
                return text;
            }

            set
            {
                text = value;
            }
        }

        protected override void RenderWebPart(HtmlTextWriter output)
        {
            RenderChildren(output);
            // Securely write out HTML
            output.Write("<BR>Text Property: " + SPEncode.HtmlEncode(Text));    
        }
    }
}