HelloWebPart.WebPart1

namespace HelloWebPart.WebPart1
{
    [ToolboxItemAttribute(false)]
    public class WebPart1 : WebPart
    {
        public Label lbtext = new Label();
        protected override void CreateChildControls()
        {
            this.Controls.Add(lbtext);
            lbtext.Text = "Hello WebPart.WebPart1";
        }

        protected override void Render(HtmlTextWriter writer)
        {
            writer.Write("Label:");
            this.lbtext.RenderControl(writer);
        }

    }
}