页面数据校验

using System;


using System.Text;


using System.Web;


using System.Web.UI.WebControls;


using System.Text.RegularExpressions;






/**//// <summary>


/// 页面数据校验类


/// </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]+$");


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("[一-龥]");




public PageValidate()




...{


}








数字字符串检查#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 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;


}




/**//// <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






中文检测#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






邮件地址#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






其他#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






}