systemtools.cs

企业网站管理系统(C#.NET2003开发),供初学者学习!

using System;
using System.Collections.Generic;
using System.Text;

namespace OleDbHelper
{
    public class SystemException : Exception
    {
        /// <summary>
        /// 包含系统Excepton
        /// </summary>
        public SystemException(string source, string message, Exception inner)
            : base(message, inner)
        {
            base.Source = source;
        }

        /// <summary>
        /// 不包含系统Excepton
        /// </summary>			
        public SystemException(string source, string message)
            : base(message)
        {
            base.Source = source;
        }
    }

    /// <summary>
    /// 处理网页中的HTML代码，并消除危险字符
    /// </summary>
    public class SystemHTML
    {
        private static string HTMLEncode(string fString)
        {
            if (fString != string.Empty)
            {
                ///替换尖括号
                fString.Replace("<", "&lt;");
                fString.Replace(">", "&rt;");
                ///替换引号
                fString.Replace(((char)34).ToString(), "&quot;");
                fString.Replace(((char)39).ToString(), "&#39;");
                ///替换空格
                fString.Replace(((char)13).ToString(), "");
                ///替换换行符
                fString.Replace(((char)10).ToString(), "<BR> ");
            }
            return (fString);
        }
    }
}