elmha.ir-post104-code2.cs

 using System;
using System.ComponentModel;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using Microsoft.SharePoint;
using Microsoft.SharePoint.WebControls;
namespace Araye.SharePoint.Webparts.HelloWorld.HelloWorld
{
  [ToolboxItemAttribute(false)]
  public class HelloWorld : WebPart
  {
    protected override void CreateChildControls()
    {
      this.Controls.Add(new Label(){Text = "Hello World from SharePoint Webpart!"});
    }
  }
}