Creating a MOSS 2007 webpart

Start VS 200[5][8] and create a new class library
Sign your class library and determine the publickey token (use reflector.NET for example)

Create a new class in your library with the following code:

using System;
using System.Collections.Generic;
using System.Text;
using System.Web.UI.WebControls.WebParts;
namespace SimpleWebpart
{
    public class SimpleWebPart : WebPart
    {
        private string displayText = &quot;Hello World!&quot;;

        [WebBrowsable(true), Personalizable(true)]
        public string DisplayText
        {
            get { return displayText; }
            set { displayText = value; }
        }

        protected override void Render(System.Web.UI.HtmlTextWriter writer)
        {
            writer.Write(displayText);
        }
    }
}

Add the following line of code to your AssemblyInfo.cs:
```
[assembly: AllowPartiallyTrustedCallers]
```

Edit your web.config to add a safecontrol entry (remember to use the public key token as determined in step 2):

&lt;SafeControl Assembly=&quot;SimpleWebpart,Version=1.0.0.0,
  Culture=neutral,PublicKeyToken=XXXXXXXXXXXXXXX&quot;
  Namespace=&quot;SimpleWebpart&quot; TypeName=&quot;*&quot; Safe=&quot;True&quot; /&gt;

Copy the class library dll to the bin directory of your webapplication
Create a site collection if not already available
Go to Site Actions –> All settings –> Web parts. Choose New and add your web part to the site gallery.
Edit the page and add your webpart.

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Creating a MOSS 2007 webpart

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