动态改写用户控件

起因：最近看CMS，为了适应极度变态的需求~~

直接贴图：

 

源代码：

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.IO;
using BaiChang.HeaBlog.Entity;
using BaiChang.HeaBlog.Framework;

namespace BaiChang.HeaBlog.WebSite.PreReal
{
    public partial class ShowHealDiary : BaiChang .HeaBlog .Framework .HttpHandler.UserPage
    {
        string rootPath = "~/PreReal/Control/";
        string currPath = string.Empty;

        protected void Page_Load(object sender, EventArgs e)
        {
            if (!IsPostBack)
            {
                BindFilesToDropDownList();
            }
                currPath = ddlFileChoose.SelectedItem.Value;
            if(!IsPostBack )
            {
                ReadFiles();
            }
        }

        protected void ddlFileChoose_SelectedIndexChanged(object sender, EventArgs e)
        {
            currPath = ddlFileChoose.SelectedItem.Value;
            ReadFiles();
        }

        protected void btnSave_Click(object sender, EventArgs e)
        {
            File.WriteAllText(Server .MapPath ( currPath), txtPage.Text, System.Text.Encoding.Default);
            File.WriteAllText(Server.MapPath(currPath + ".cs"), txtCode.Text, System.Text.Encoding.Default);
        }

        protected void btnPreview_Click(object sender, EventArgs e)
        {
            PreViewPart.Visible = true;
            PreViewPart.Controls.Add(LoadControl(currPath));
        }

        #region Helper
        void BindFilesToDropDownList()
        {
            
            string[] files = Directory.GetFiles(Server.MapPath(rootPath),"*.ascx");
            files.ToList().ForEach(it =>
            {
                FileInfo info = new FileInfo(it);
                ddlFileChoose.Items.Add(new ListItem(info.Name, rootPath+info.Name));
            });
        }

        void ReadFiles()
        {
            txtPage.Text = File.ReadAllText(Server.MapPath(currPath), System.Text.Encoding.Default);
            txtCode.Text = File.ReadAllText(Server.MapPath(currPath + ".cs"), System.Text.Encoding.Default);
        }
        #endregion
    }
}