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
- }
- }