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开发平台：
C#

UserFormCommandDesigner.cs：源码内容
							// -- FILE ------------------------------------------------------------------
// name       : UserFormCommandDesigner.cs
// project    : Itenso Web User Forms
// created    : Jani Giannoudis - 2008.10.30
// language   : c#
// environment: .NET 2.0
// copyright  : (c) 2008 by Itenso GmbH, Switzerland
// --------------------------------------------------------------------------
using System;
using System.IO;
using System.Text;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.Design;
using System.Drawing;
namespace Itenso.WebUserForms.Controls
{
	// ------------------------------------------------------------------------
	public class UserFormCommandDesigner : ControlDesigner
	{
		// ----------------------------------------------------------------------
		public UserFormCommandDesigner()
		{
		} // UserFormCommandDesigner
		// ----------------------------------------------------------------------
		protected Control DesignControl
		{
			get { return base.Component as Control; }
		} // DesignControl
		// ----------------------------------------------------------------------
		protected Color MissingCommandNameColor
		{
			get { return this.missingCommandNameColor; }
			set { this.missingCommandNameColor = value; }
		} // MissingCommandNameColor
		// ----------------------------------------------------------------------
		protected string CommandName
		{
			get
			{
				IUserFormCommand formCommand = base.Component as IUserFormCommand;
				if ( formCommand == null )
				{
					throw new InvalidOperationException( "IUserFormCommand required" );
				}
				return formCommand.CommandName;
			}
		} // CommandName
		// ----------------------------------------------------------------------
		protected bool HasCommandName
		{
			get { return !string.IsNullOrEmpty( CommandName ); }
		} // HasCommandName
		// ----------------------------------------------------------------------
		public override string GetDesignTimeHtml()
		{
			Control designControl = DesignControl;
			if ( designControl == null )
			{
				return base.GetDesignTimeHtml();
			}
			WebControl designWebControl = designControl as WebControl;
			if ( designWebControl != null )
			{
				designWebControl.BackColor = GetStatusColor();
			}
			return GetRenderHtml( designControl );
		} // GetDesignTimeHtml
		// ----------------------------------------------------------------------
		protected virtual Color GetStatusColor()
		{
			if ( !HasCommandName )
			{
				return MissingCommandNameColor;
			}
			return Color.Empty;
		} // GetStatusColor
		// ----------------------------------------------------------------------
		protected virtual string GetRenderHtml( Control control )
		{
			StringWriter text = new StringWriter();
			HtmlTextWriter writer = new HtmlTextWriter( text );
			control.RenderControl( writer );
			return text.ToString();
		} // GetRenderHtml
		// ----------------------------------------------------------------------
		// members
		private Color missingCommandNameColor = Color.Red;
	} // class UserFormCommandDesigner
} // namespace Itenso.WebUserForms.Controls
// -- EOF -------------------------------------------------------------------

						