数据检查类代码,CSharp代码库,德仔网

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【CSharp】数据检查类
作者:dezai / 发布于2014/6/20/ 356
数据, 检查, gt, param, summary, inputdata, string, returns, static, 字符, name, public, retval, regex, match, sqlinput

	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">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 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">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
	 #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
	}
	}
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