C# WinForm程序皮肤设置与换肤功能实现

using System;
using System.Collections.Generic;
using System.Text;
using System.Windows.Forms;
using System.Data;
using System.Collections;
namespace HotelManage
{
    class SkinClass
    {
       
        public static Sunisoft.IrisSkin.SkinEngine se = null;
        /// <summary> 
        /// 增加换肤菜单 
        /// </summary> 
        /// <param name="toolMenu"></param> 
        public static void AddSkinMenu(ToolStripMenuItem toolMenu)
        {
            DataSet skin = new DataSet();
            try
            {

                skin.ReadXml("skin.xml", XmlReadMode.Auto);
            }
            catch
            {

            }
            if (skin == null || skin.Tables.Count < 1)
            {

                skin = new DataSet();
                skin.Tables.Add("skin");
                skin.Tables["skin"].Columns.Add("style");
                System.Data.DataRow dr = skin.Tables["skin"].NewRow();
                dr[0] = "系统默认";
                skin.Tables[0].Rows.Add(dr);
                skin.WriteXml("skin.xml", XmlWriteMode.IgnoreSchema);
            }
            foreach (SkinType st in (SkinType[])System.Enum.GetValues(typeof(SkinType)))
            {
                toolMenu.DropDownItems.Add(new ToolStripMenuItem(st.ToString()));

                toolMenu.DropDownItems[toolMenu.DropDownItems.Count - 1].Click += new EventHandler(frm_Main_Click);
                if (st.ToString() == skin.Tables[0].Rows[0][0].ToString())
                {
                    ((ToolStripMenuItem)toolMenu.DropDownItems[toolMenu.DropDownItems.Count - 1]).Checked = true;
                    frm_Main_Click(toolMenu.DropDownItems[toolMenu.DropDownItems.Count - 1], null);

                }

            }

            toolMenu.DropDownItems.Add(new ToolStripMenuItem("系统默认"));
            toolMenu.DropDownItems[toolMenu.DropDownItems.Count - 1].Click += new EventHandler(frm_Main_Click);
            if (skin.Tables[0].Rows[0][0].ToString() == "系统默认")
            {
                ((ToolStripMenuItem)toolMenu.DropDownItems[toolMenu.DropDownItems.Count - 1]).Checked = true;
            }
        }
        static void frm_Main_Click(object sender, EventArgs e)