C#实现对用户输入数据进行校验的类实例

using System;using System.Text;using System.Web;using System.Web.UI.WebControls;using System.Text.RegularExpressions;namespace DotNet.Utilities{  public class PageValidate  {    private static Regex RegNumber = new Regex("^[0-9]+$");    private static Regex RegNumberSign = new Regex("^[+-]?[0-9]+$");    private static Regex RegDecimal = new Regex("^[0-9]+[.]?[0-9]+$");    private static Regex RegDecimalSign = new Regex("^[+-]?[0-9]+[.]?[0-9]+$"); //等价于^[+-]?/d+[.]?/d+$    private static Regex RegEmail = new Regex("^[//w-]+@[//w-]+//.(com|net|org|edu|mil|tv|biz|info)$");//w 英文字母或数字的字符串，和 [a-zA-Z0-9] 语法一样    private static Regex RegCHZN = new Regex("[/u4e00-/u9fa5]");    public PageValidate()    {    }     #region 数字字符串检查    /// <summary>    /// 格式化字符串    /// </summary>    /// <param name="inputData">源字符串</param>    /// <param name="formatlevel">0:不做验证| 1:sql语句参数| 2:存储过程参数| 3:EncodeHtml| 4:Encode+sql| 5:Encode+存储过程</param>    /// <returns>返回格式化后的字符串</returns>    public static string FormatString(string inputData, int formatlevel)    {      return inputData;    }    /// <summary>    /// 检查Request查询字符串的键值，是否是数字，最大长度限制    /// </summary>    /// <param name="req">Request</param>    /// <param name="inputKey">Request的键值</param>    /// <param name="maxLen">最大长度</param>    /// <returns>返回Request查询字符串</returns>    public static string FetchInputDigit(HttpRequest req, string inputKey, int maxLen)    {      string retVal = string.Empty;      if (inputKey != null && inputKey != string.Empty)      {        retVal = req.QueryString[inputKey];        if (null == retVal)          retVal = req.Form[inputKey];        if (null != retVal)        {          retVal = SqlText(retVal, maxLen);          if (!IsNumber(retVal))            retVal = string.Empty;        }      }      if (retVal == null)        retVal = string.Empty;      return retVal;    }    public enum CheckType    { None, Int, SignInt, Float, SignFloat, Chinese, Mail }    /// <summary>    /// 检测字符串类型    /// </summary>    /// <param name="inputData">输入字符串</param>    /// <param name="checktype">0:不检测| 1:数字| 2:符号数字| 3: 浮点数| 4:符号浮点| 5: 中文?| 6:邮件?</param>    /// <returns></returns>    public static bool checkString(string inputData, int checktype)    {      bool _return = false;      switch (checktype)      {        case 0:          _return = true;          break;        case 1:          _return = IsNumber(inputData);          break;        case 2:          _return = IsNumberSign(inputData);          break;        case 3:          _return = IsDecimal(inputData);          break;        case 4:          _return = IsDecimalSign(inputData);          break;        case 5:          _return = IsHasCHZN(inputData);          break;        case 6:          _return = IsEmail(inputData);          break;        default:          _return = false;          break;      }      return _return;    }    /// <summary>    /// 是否数字字符串    /// </summary>    /// <param name="inputData">输入字符串</param>    /// <returns></returns>    public static bool IsNumber(string inputData)    {      Match m = RegNumber.Match(inputData);      return m.Success;    }    /// <summary>    /// 是否数字字符串 可带正负号    /// </summary>    /// <param name="inputData">输入字符串</param>    /// <returns></returns>    public static bool IsNumberSign(string inputData)    {      Match m = RegNumberSign.Match(inputData);      return m.Success;    }    /// <summary>    /// 是否是浮点数    /// </summary>    /// <param name="inputData">输入字符串</param>    /// <returns></returns>    public static bool IsDecimal(string inputData)    {      Match m = RegDecimal.Match(inputData);      return m.Success;    }    /// <summary>    /// 是否是浮点数 可带正负号    /// </summary>    /// <param name="inputData">输入字符串</param>    /// <returns></returns>    public static bool IsDecimalSign(string inputData)    {      Match m = RegDecimalSign.Match(inputData);      return m.Success;    }    #endregion    #region 中文检测    /// <summary>    /// 检测是否有中文字符    /// </summary>    /// <param name="inputData"></param>    /// <returns></returns>    public static bool IsHasCHZN(string inputData)    {      Match m = RegCHZN.Match(inputData);      return m.Success;    }    #endregion    public static string GetShortDate(string dt)    {      return Convert.ToDateTime(dt).ToShortDateString();    }    #region 邮件地址    /// <summary>    /// 是否是浮点数 可带正负号    /// </summary>    /// <param name="inputData">输入字符串</param>    /// <returns></returns>    public static bool IsEmail(string inputData)    {      Match m = RegEmail.Match(inputData);      return m.Success;    }    #endregion    #region 其他    /// <summary>    /// 检查字符串最大长度，返回指定长度的串    /// </summary>    /// <param name="sqlInput">输入字符串</param>    /// <param name="maxLength">最大长度</param>    /// <returns></returns>        public static string SqlText(string sqlInput, int maxLength)    {      if (sqlInput != null && sqlInput != string.Empty)      {        sqlInput = sqlInput.Trim();        if (sqlInput.Length > maxLength)//按最大长度截取字符串          sqlInput = sqlInput.Substring(0, maxLength);      }      return sqlInput;    }     /// <summary>    /// 字符串编码    /// </summary>    /// <param name="inputData"></param>    /// <returns></returns>    public static string HtmlEncode(string inputData)    {      return HttpUtility.HtmlEncode(inputData);    }    /// <summary>    /// 设置Label显示Encode的字符串    /// </summary>    /// <param name="lbl"></param>    /// <param name="txtInput"></param>    public static void SetLabel(Label lbl, string txtInput)    {      lbl.Text = HtmlEncode(txtInput);    }    public static void SetLabel(Label lbl, object inputObj)    {      SetLabel(lbl, inputObj.ToString());    }    #endregion    #region 对于用户权限从数据库中读出的解密过程    public static string switch_riddle(string s_ch)//解密    {      string s_out, s_temp, temp;      int i_len = s_ch.Length;      if (i_len == 0 || s_ch == "")      {        s_out = "0";      }      temp = "";      s_temp = "";      s_out = "";      for (int i = 0; i <= i_len - 1; i++)      {        temp = s_ch.Substring(i, 1);        switch (temp)        {          case "a": s_temp = "1010";            break;          case "b": s_temp = "1011";            break;          case "c": s_temp = "1100";            break;          case "d": s_temp = "1101";            break;          case "e": s_temp = "1110";            break;          case "f": s_temp = "1111";            break;          case "0": s_temp = "0000";            break;          case "1": s_temp = "0001";            break;          case "2": s_temp = "0010";            break;          case "3": s_temp = "0011";            break;          case "4": s_temp = "0100";            break;          case "5": s_temp = "0101";            break;          case "6": s_temp = "0110";            break;          case "7": s_temp = "0111";            break;          case "8": s_temp = "1000";            break;          case "9": s_temp = "1001";            break;          default: s_temp = "0000";            break;        }        s_out = s_out + s_temp;        s_temp = "";      }      return s_out;    }    #endregion    #region 用户权限的加密过程    public static string switch_encrypt(string s_ch)    {      string s_out, s_temp, temp;      int i_len = 64;      if (i_len == 0 || s_ch == "")      {        s_out = "0000";      }      temp = "";      s_temp = "";      s_out = "";      for (int i = 0; i <= i_len - 1; i = i + 4)      {        temp = s_ch.Substring(i, 4);        switch (temp)        {          case "1010": s_temp = "a";            break;          case "1011": s_temp = "b";            break;          case "1100": s_temp = "c";            break;          case "1101": s_temp = "d";            break;          case "1110": s_temp = "e";            break;          case "1111": s_temp = "f";            break;          case "0000": s_temp = "0";            break;          case "0001": s_temp = "1";            break;          case "0010": s_temp = "2";            break;          case "0011": s_temp = "3";            break;          case "0100": s_temp = "4";            break;          case "0101": s_temp = "5";            break;          case "0110": s_temp = "6";            break;          case "0111": s_temp = "7";            break;          case "1000": s_temp = "8";            break;          case "1001": s_temp = "9";            break;          default: s_temp = "0";            break;        }        s_out = s_out + s_temp;        s_temp = "";      }      return s_out;    }//加密    #endregion    #region  访问权限    public static bool CheckTrue(string s_admin, int a)    {      string s_temp = "";      s_temp = s_admin.Substring(a - 1, 1);  //s_admin为全局变量      if (s_temp == "" || s_temp == "1")      {        return true;      }      else      {        return false;      }    }    #endregion    #region  检测字符串长度    /// <summary>     /// 计算文本长度，区分中英文字符，中文算两个长度，英文算一个长度    /// </summary>    /// <param name="Text">需计算长度的字符串</param>    /// <returns>int</returns>    public static int Text_Length(string Text)    {      int len = 0;      for (int i = 0; i < Text.Length; i++)      {        byte[] byte_len = Encoding.Default.GetBytes(Text.Substring(i, 1));        if (byte_len.Length > 1)          len += 2; //如果长度大于1，是中文，占两个字节，+2        else          len += 1; //如果长度等于1，是英文，占一个字节，+1      }      return len;    }    #endregion    #region  字符串长度区分中英文截取    /// <summary>     /// 截取文本，区分中英文字符，中文算两个长度，英文算一个长度    /// </summary>    /// <param name="str">待截取的字符串</param>    /// <param name="length">需计算长度的字符串</param>    /// <returns>string</returns>    public static string GetSubString(string str, int length)    {      string temp = str;      int j = 0;      int k = 0;      for (int i = 0; i < temp.Length; i++)      {        if (Regex.IsMatch(temp.Substring(i, 1), @"[/u4e00-/u9fa5]+"))        {          j += 2;        }        else        {          j += 1;        }        if (j <= length)        {          k += 1;        }        if (j > length)        {          return temp.Substring(0, k) + "..";        }      }      return temp;    }    #endregion    #region 页面HTML格式化    public static string GetHtml(string sDetail)    {      Regex r;      Match m;      #region 处理空格      sDetail = sDetail.Replace(" ", " ");      #endregion      #region 处理单引号      sDetail = sDetail.Replace("'", "'");      #endregion      #region 处理双引号      sDetail = sDetail.Replace("/"", """);      #endregion      #region html标记符      sDetail = sDetail.Replace("<", "<");      sDetail = sDetail.Replace(">", ">");      #endregion      #region 处理换行      //处理换行，在每个新行的前面添加两个全角空格      r = new Regex(@"(/r/n(( )|　)+)(?<正文>/S+)", RegexOptions.IgnoreCase);      for (m = r.Match(sDetail); m.Success; m = m.NextMatch())      {        sDetail = sDetail.Replace(m.Groups[0].ToString(), "<BR>　　" + m.Groups["正文"].ToString());      }      //处理换行，在每个新行的前面添加两个全角空格      sDetail = sDetail.Replace("/r/n", "<BR>");      #endregion      return sDetail;    }    #endregion    #region 分页    //public static string paging(string url, string para, int sumpage, int page)    //{    //  string result = string.Empty;    //  if (sumpage == 1)    //  {    //    return result;    //  }    //  if (page > sumpage)    //  {    //    page = 1;    //  }    //  if (sumpage > 0)    //  {    //    for (int i = 1; i <= sumpage; i++)    //    {    //      if (i == page)    //      {    //        result += string.Format("<a class=/"a_page/" href=/"{0}?page={1}{2}/">{3}</a> ", new object[] { url, i.ToString(), para, i.ToString() });    //      }    //      else    //      {    //        result += string.Format("<a href=/"{0}?page={1}{2}/">{3}</a> ", new object[] { url, i.ToString(), para, i.ToString() });    //      }    //    }    //  }    //  return result;    //}    public static string paging(string url, string para, int sumpage, int page)    {      string result = string.Empty;      if (sumpage == 1)      {        return result;      }      if (sumpage > 500)      {        sumpage = 500;      }      if (page > sumpage)      {        page = 1;      }      StringBuilder sb = new StringBuilder();      if (sumpage > 0)      {        switch (page)        {          case 1:            sb.Append(string.Format("<p class=/"next/"><a href=/"{0}?page={1}{2}/">{3}</a> ", new object[] { url, page + 1, para, "下一页" }));            break;          default:            if (sumpage == page)            {              sb.Append(string.Format("<p class=/"next/"><a href=/"{0}?page={1}{2}/">{3}</a> ", new object[] { url, page - 1, para, "上一页" }));            }            else            {              sb.Append(string.Format("<p class=/"next/"><a href=/"{0}?page={1}{2}/">{3}</a> <a href=/"{4}?page={5}{6}/">{7}</a> ",                new object[] { url, page + 1, para, "下一页", url, page - 1, para, "上一页" }));            }            break;        }        sb.Append(string.Format("第{0}/{1}页</p>", new object[] { page, sumpage }));      }      return sb.ToString();    }    public static string paging(string url, string para, int sumpage, int page, System.Web.UI.UserControl myPaging)    {      myPaging.Visible = false;      string result = string.Empty;      if (sumpage == 1)      {        return result;      }      if (sumpage > 500)      {        sumpage = 500;      }      if (page > sumpage)      {        page = 1;      }      StringBuilder sb = new StringBuilder();      if (sumpage > 0)      {        myPaging.Visible = true;        switch (page)        {          case 1:            sb.Append(string.Format("<a href=/"{0}?page={1}{2}/">{3}</a> ", new object[] { url, page + 1, para, "下一页" }));            break;          default:            if (sumpage == page)            {              sb.Append(string.Format("<a href=/"{0}?page={1}{2}/">{3}</a> ", new object[] { url, page - 1, para, "上一页" }));            }            else            {              sb.Append(string.Format("<a href=/"{0}?page={1}{2}/">{3}</a> <a href=/"{4}?page={5}{6}/">{7}</a> ",                new object[] { url, page + 1, para, "下一页", url, page - 1, para, "上一页" }));            }            break;        }        sb.Append(string.Format("第{0}/{1}页", new object[] { page, sumpage }));      }      return sb.ToString();    }    public static string paging(string para, int sumpage, int page, int count)    {      string result = string.Empty;      if (page > sumpage)      {        page = 1;      }      StringBuilder sb = new StringBuilder();      if (sumpage > 0)      {        if (sumpage != 1)        {          switch (page)          {            case 1:              sb.Append(string.Format("<a href=/"?page={0}{1}/">{2}</a> ", new object[] { page + 1, para, "下一页" }));              break;            default:              if (sumpage == page)              {                sb.Append(string.Format("<a href=/"?page={0}{1}/">{2}</a> ", new object[] { page - 1, para, "上一页" }));              }              else              {                sb.Append(string.Format("<a href=/"?page={0}{1}/">{2}</a> <a href=/"?page={3}{4}/">{5}</a> ",                  new object[] { page - 1, para, "上一页", page + 1, para, "下一页" }));              }              break;          }        }        sb.Append(string.Format("第{0}/{1}页 共{2}条", new object[] { page, sumpage, count }));      }      return sb.ToString();    }    public static void paging(string clinktail, int sumpage, int page, System.Web.UI.WebControls.Label page_view)    {      if (sumpage > 0)      {        int n = sumpage;  //总页数        int x = page;  //得到当前页        int i;        int endpage;        string pageview = "", pageviewtop = "";        if (x > 1)        {          pageview += "  <a class='pl' href='?page=1" + clinktail + "'>第1页</a> | ";          pageviewtop += "  <a class='pl' href='?page=1" + clinktail + "'>第1页</a> | ";        }        else        {          pageview += "  <font color='#666666'> 第1页 </font> | ";          pageviewtop += "  <font color='#666666'> 第1页 </font> | ";        }        if (x > 1)        {          pageviewtop += " <a class='pl' href='?page=" + (x - 1) + "" + clinktail + "'>上1页</a> ";        }        else        {          pageviewtop += " <font color='#666666'>上1页</font> ";        }        if (x > ((x - 1) / 10) * 10 && x > 10)        {          pageview += "<a class='pl' href='?page=" + ((x - 1) / 10) * 10 + "" + clinktail + "' onclink='return false;'>上10页</a>";        }        //if (((x-1) / 10) * 10 + 10) >= n )        if (((x - 1) / 10) * 10 + 10 >= n)        {          endpage = n;        }        else        {          endpage = ((x - 1) / 10) * 10 + 10;        }        for (i = ((x - 1) / 10) * 10 + 1; i <= endpage; ++i)        {          if (i == x)          {            pageview += " <font color='#FF0000'><b>" + i + "</b></font>";          }          else          {            pageview += " <a class='pl' href='?page=" + i + "" + clinktail + "'>" + i + "</a>";          }        }        if (x < n)        {          pageviewtop += " <a class='pl' href='?page=" + (x + 1) + "" + clinktail + "'>下1页</a> ";        }        else        {          pageviewtop += " <font color='#666666'>下1页</font> ";        }        if (endpage != n)        {          pageview += " <a class='pl' href='?page=" + (endpage + 1) + "" + clinktail + "' class='pl' onclink='return false;'>下10页</a> | ";        }        else        {          pageview += " | ";        }        if (x < n)        {          pageview += " <a class='pl' href='?page=" + n + "" + clinktail + "' class='pl'>第" + n + "页</a> ";          pageviewtop += " | <a class='pl' href='?page=" + n + "" + clinktail + "' class='pl'>第" + n + "页</a> ";        }        else        {          pageview += "<font color='#666666'> 第" + n + "页 </font>";          pageviewtop += " | <font color='#666666'> 第" + n + "页 </font>";        }        page_view.Text = pageview.ToString();      }      else      {        page_view.Text = "";      }    }    //带第一页和最后一页    public static string paging2(string para, int sumpage, int page, int count)    {      string result = string.Empty;      if (page > sumpage)      {        page = 1;      }      StringBuilder sb = new StringBuilder();      if (sumpage > 0)      {        if (sumpage != 1)        {          //第一页          sb.Append(string.Format("<a href=/"?page={0}{1}/"><img src=/"images/first-icon.gif/" border=/"0/"/></a>  ", new object[] { 1, para }));          switch (page)          {            case 1:              //前一页图片              sb.Append(string.Format("<a>{0}</a>", new object[] { "<img src=/"images/left-icon.gif/" border=/"0/"/>" }));              sb.Append(string.Format("<a>上一页</a><a href=/"?page={0}{1}/">{2}</a> ", new object[] { page + 1, para, "下一页" }));              //后一页图片              sb.Append(string.Format("<a href=/"?page={0}{1}/">{2}</a>", new object[] { page + 1, para, "<img src=/"images/right-icon.gif/" border=/"0/"/>" }));              break;            default:              if (sumpage == page)              {                //前一页图片                sb.Append(string.Format("<a href=/"?page={0}{1}/">{2}</a>", new object[] { page - 1, para, "<img src=/"images/left-icon.gif/" border=/"0/"/>" }));                sb.Append(string.Format("<a href=/"?page={0}{1}/">{2}</a><a>下一页</a> ", new object[] { page - 1, para, "上一页" }));                //后一页图片                sb.Append(string.Format("<a>{0}</a>", new object[] { "<img src=/"images/right-icon.gif/" />" }));              }              else              {                //前一页图片                sb.Append(string.Format("<a href=/"?page={0}{1}/">{2}</a>", new object[] { page - 1, para, "<img src=/"images/left-icon.gif/" border=/"0/"/>" }));                sb.Append(string.Format("<a href=/"?page={0}{1}/">{2}</a> <a href=/"?page={3}{4}/">{5}</a> ",                  new object[] { page - 1, para, "上一页", page + 1, para, "下一页" }));                //后一页图片                sb.Append(string.Format("<a href=/"?page={0}{1}/">{2}</a>", new object[] { page + 1, para, "<img src=/"images/right-icon.gif/" border=/"0/"/>" }));              }              break;          }          //最后一页图片          sb.Append(string.Format("  <a href=/"?page={0}{1}/"><img src=/"images/last-icon.gif/" border=/"0/"/></a>  ", new object[] { sumpage, para }));        }        sb.Append(string.Format("第{0}页/共{1}页 共{2}条", new object[] { page, sumpage, count }));      }      return sb.ToString();    }    public static string paging3(string url, string para, int sumpage, int page, int count)    {      string result = string.Empty;      if (page > sumpage)      {        page = 1;      }      StringBuilder sb = new StringBuilder();      if (sumpage > 0)      {        if (sumpage != 1)        {          //第一页          sb.Append(string.Format("<a href=/"{2}?page={0}{1}/">首页</a>", new object[] { 1, para, url }));          switch (page)          {            case 1:              //前一页图片              // sb.Append(string.Format("<a>{0}</a>", new object[] { "<img src=/"images/left-icon.gif/" border=/"0/"/>" }));              sb.Append(string.Format("<a>上一页</a><a href=/"{3}?page={0}{1}/">{2}</a> ", new object[] { page + 1, para, "下一页", url }));              //后一页图片              // sb.Append(string.Format("<a href=/"?page={0}{1}/">{2}</a>", new object[] { page + 1, para, "<img src=/"images/right-icon.gif/" border=/"0/"/>" }));              break;            default:              if (sumpage == page)              {                //前一页图片                //sb.Append(string.Format("<a href=/"?page={0}{1}/">{2}</a>", new object[] { page - 1, para, "<img src=/"images/left-icon.gif/" border=/"0/"/>" }));                sb.Append(string.Format("<a href=/"{3}?page={0}{1}/">{2}</a><a>下一页</a> ", new object[] { page - 1, para, "上一页", url }));                //后一页图片                //sb.Append(string.Format("<a>{0}</a>", new object[] { "<img src=/"images/right-icon.gif/" />" }));              }              else              {                //前一页图片                //sb.Append(string.Format("<a href=/"?page={0}{1}/">{2}</a>", new object[] { page - 1, para, "<img src=/"images/left-icon.gif/" border=/"0/"/>" }));                sb.Append(string.Format("<a href=/"{6}?page={0}{1}/">{2}</a> <a href=/"{6}?page={3}{4}/">{5}</a> ",                  new object[] { page - 1, para, "上一页", page + 1, para, "下一页", url }));                //后一页图片                //sb.Append(string.Format("<a href=/"?page={0}{1}/">{2}</a>", new object[] { page + 1, para, "<img src=/"images/right-icon.gif/" border=/"0/"/>" }));              }              break;          }          //最后一页图片          sb.Append(string.Format("<a href=/"{2}?page={0}{1}/">末页</a>  ", new object[] { sumpage, para, url }));        }        sb.Append(string.Format("第{0}页/共{1}页 共{2}条", new object[] { page, sumpage, count }));      }      return sb.ToString();    }    #endregion    #region 日期格式判断    /// <summary>    /// 日期格式字符串判断    /// </summary>    /// <param name="str"></param>    /// <returns></returns>    public static bool IsDateTime(string str)    {      try      {        if (!string.IsNullOrEmpty(str))        {          DateTime.Parse(str);          return true;        }        else        {          return false;        }      }      catch      {        return false;      }    }    #endregion    #region 是否由特定字符组成    public static bool isContainSameChar(string strInput)    {      string charInput = string.Empty;      if (!string.IsNullOrEmpty(strInput))      {        charInput = strInput.Substring(0, 1);      }      return isContainSameChar(strInput, charInput, strInput.Length);    }    public static bool isContainSameChar(string strInput, string charInput, int lenInput)    {      if (string.IsNullOrEmpty(charInput))      {        return false;      }      else      {        Regex RegNumber = new Regex(string.Format("^([{0}])+$", charInput));        //Regex RegNumber = new Regex(string.Format("^([{0}]{{1}})+$", charInput,lenInput));        Match m = RegNumber.Match(strInput);        return m.Success;      }    }    #endregion    #region 检查输入的参数是不是某些定义好的特殊字符：这个方法目前用于密码输入的安全检查    /// <summary>    /// 检查输入的参数是不是某些定义好的特殊字符：这个方法目前用于密码输入的安全检查    /// </summary>    public static bool isContainSpecChar(string strInput)    {      string[] list = new string[] { "123456", "654321" };      bool result = new bool();      for (int i = 0; i < list.Length; i++)      {        if (strInput == list[i])        {          result = true;          break;        }      }      return result;    }    #endregion  }}