常用字符轉換函數 asp.net2.0c#

using System;
using System.Drawing;
using System.Data;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Text.RegularExpressions;
using System.IO;
using System.Drawing.Imaging;
using System.Text;
using System.Web.Security;

/**//// <summary>
/// 處理輸入的字符類
/// </summary>
public class dealinput
...{
     private static string passWord;    //加密字符串

        /**//// <summary>
        /// 判斷輸入是否數字
        /// </summary>
        /// <param name="num">要判斷的字符串</param>
        /// <returns></returns>
        static public bool VldInt(string num)

 ...{
            ...#region
            try
            ...{
                Convert.ToInt32(num);
                return true;
            }
            catch ...{ return false; }
            #endregion
        }
          

        /**//// <summary>
        /// 修改特殊字符
        /// </summary>
        /// <param name="str">要替換的字符串</param>
        /// <returns></returns>
 static public string CheckStr(string str)
        ...{
            ...#region