ASP.NET generic content box with title and body

Here is a quick example of creating a simple ASP.NET web control that allow you to have a region/box that contains a title and body where each of three elements can each have their own CSS class.

You can use the content box in a web page like:

Code:

using System.Web.UI.WebControls;

namespace CarverPainting
{
   public class ContentBox : Panel
   {
      public string CssClassBody
      {
         get { return base.CssClass; }
         set { base.CssClass = value; }
      }

      public override string CssClass
      {
         get
         {
            return ViewState["CssClassMain"] == null ? string.Empty : ViewState["CssClassMain"].ToString();
         }

         set
         {
            ViewState["CssClassMain"] = value;
         }
      }

      public string CssClassTitle
      {
         get
         {
            return ViewState["CssClassTitle"] == null ? string.Empty : ViewState["CssClassTitle"].ToString();
         }

         set
         {
            ViewState["CssClassTitle"] = value;
         }
      }

      public string Title
      {
         get
         {
            return ViewState["Title"] == null ? string.Empty : ViewState["Title"].ToString();
         }

         set
         {
            ViewState["Title"] = value;
         }
      }

      protected override void Render(System.Web.UIHtmlTextWriter writer)
      {
         bool hasClass = !string.IsNullOrWhiteSpace(CssClass);
         bool hasClassTitle = !string.IsNullOrWhiteSpace(CssClassTitle);
         bool hasClassBody = !string.IsNullOrWhiteSpace(CssClassBody);

         // contentbox class
         writer.Write("<div{0}>", hasClass ? string.Format(" class=\"{0}\"", CssClass) : string.Empty);

         if (!string.IsNullOrWhiteSpace(Title))
         {
            writer.Write("<div{0}>{1}</div>", hasClassTitle ? string.Format(" class=\"{0}\"", CssClassTitle) : string.Empty, Title);
         }

         base.Render(writer);

         // contentbox class
         writer.Write("</div>");
      }
   }
}