C#常用数据检查类
- using System;
 - using System.Text;
 - using System.Web;
 - using System.Web.UI.WebControls;
 - using System.Text.RegularExpressions;
 - namespace Legalsoft.Wizard.Basic // 设置项目属性可修改本项目的命名空间
 - {
 - /// <summary>
 - /// 页面数据校验类
 - /// 修改自 李天平先生的作品,一并感谢。
 - /// </summary>
 - 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]+$");
 - //等价于^[+-]?\d+[.]?\d+$
 - private static Regex RegDecimalSign = new Regex("^[+-]?[0-9]+[.]?[0-9]+$");
 - //w 英文字母或数字的字符串,和 [a- zA-Z0-9] 语法一样
 - private static Regex RegEmail = new Regex("^[\\w-]+@[\\w-]+\\.(com|net|org|edu|mil|tv|biz|info)$");
 - private static Regex RegCHZN = new Regex("[\u4e00-\u9fa5]");
 - public PageValidate()
 - {
 - }
 - #region 数字字符串检 查
 - /// <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"& gt;Request的键值</param>
 - /// <param name="maxLen"& gt;最大长度</param>
 - /// <returns>返回Request查询字符串</returns>
 - public static string IsDigit(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;
 - }
 - /// <summary>
 - /// 是否数字字符串
 - /// </summary>
 - /// <param name="inputData"& gt;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"& gt;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"& gt;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"& gt;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
 - #region 邮件地址
 - /// <summary>
 - /// 是否是浮点数 可带正负号
 - /// </summary>
 - /// <param name="inputData"& gt;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"& gt;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
 - }
 - }
 
                    
                
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