用于验证的公共类

/** 1. 功能：操作正则表达式的公共类  
 
**/ 
#region 引用命名空间   
using System;   
using System.Collections.Generic;   
using System.Text;   
using System.Text.RegularExpressions;  
#endregion   
  
  
namespace Comm   
{   
    /// <summary>   
    /// 操作正则表达式的公共类   
    /// </summary>       
    public class RegexHelper   
    {  
        #region 验证输入的字符串是否合法   
        /// <summary>   
        /// 验证输入的字符串是否合法，合法返回true,否则返回false。   
        /// </summary>   
        /// <param name="strInput">输入的字符串</param>   
        /// <param name="strPattern">模式字符串</param>           
        public static bool Validate( string strInput , string strPattern )   
        {   
            return Regex.IsMatch( strInput , strPattern );   
        }  
        #endregion   
    }   
}  
 
View Code    
  
/** 1. 功能：用于验证的公共类  
 
**/ 
 
#region 引用命名空间   
using System;   
using System.Collections.Generic;   
using System.Text;   
using System.Text.RegularExpressions;  
#endregion   
  
namespace Comm   
{   
    /// <summary>   
    /// 用于验证的公共类   
    /// </summary>   
    public class ValidationHelper   
    {  
        #region 判断对象是否为空   
        /// <summary>   
        /// 判断对象是否为空，为空返回true   
        /// </summary>   
        /// <typeparam name="T">要验证的对象的类型</typeparam>   
        /// <param name="data">要验证的对象</param>           
        public static bool IsNullOrEmpty<T>( T data )   
        {   
            //如果为null   
            if ( data == null )   
            {   
                return true;   
            }   
  
            //如果为""   
            if ( data.GetType() == typeof( String ) )   
            {   
                if ( string.IsNullOrEmpty( data.ToString().Trim() ) )   
                {   
                    return true;   
                }   
            }   
  
            //如果为DBNull   
            if ( data.GetType() == typeof( DBNull ) )   
            {   
                return true;   
            }   
  
            //不为空   
            return false;   
        }   
  
        /// <summary>   
        /// 判断对象是否为空，为空返回true   
        /// </summary>   
        /// <param name="data">要验证的对象</param>   
        public static bool IsNullOrEmpty( object data )   
        {   
            //如果为null   
            if ( data == null )   
            {   
                return true;   
            }   
  
            //如果为""   
            if ( data.GetType() == typeof( String ) )   
            {   
                if ( string.IsNullOrEmpty( data.ToString().Trim() ) )   
                {   
                    return true;   
                }   
            }   
  
            //如果为DBNull   
            if ( data.GetType() == typeof( DBNull ) )   
            {   
                return true;   
            }   
  
            //不为空   
            return false;   
        }  
        #endregion  
 
        #region 验证IP地址是否合法   
        /// <summary>   
        /// 验证IP地址是否合法   
        /// </summary>   
        /// <param name="ip">要验证的IP地址</param>           
        public static bool IsIP( string ip )   
        {   
            //如果为空，认为验证合格   
            if ( IsNullOrEmpty( ip ) )   
            {   
                return true;   
            }   
  
            //清除要验证字符串中的空格   
            ip = ip.Trim();   
  
            //模式字符串   
            string pattern = @"^((2[0-4]\d|25[0-5]|[01]?\d\d?)\.){3}(2[0-4]\d|25[0-5]|[01]?\d\d?)$";   
  
            //验证   
            return RegexHelper.Validate( ip, pattern );   
        }  
        #endregion  
 
        #region  验证EMail是否合法   
        /// <summary>   
        /// 验证EMail是否合法   
        /// </summary>   
        /// <param name="email">要验证的Email</param>   
        public static bool IsEmail( string email )   
        {   
            //如果为空，认为验证合格   
            if ( IsNullOrEmpty( email ) )   
            {   
                return true;   
            }   
  
            //清除要验证字符串中的空格   
            email = email.Trim();   
  
            //模式字符串   
            string pattern = @"^([0-9a-zA-Z]([-.\w]*[0-9a-zA-Z])*@([0-9a-zA-Z][-\w]*[0-9a-zA-Z]\.)+[a-zA-Z]{2,9})$";   
  
            //验证   
            return RegexHelper.Validate( email, pattern );   
        }  
        #endregion  
 
        #region 验证是否为整数   
        /// <summary>   
        /// 验证是否为整数   
        /// </summary>   
        /// <param name="number">要验证的整数</param>           
        public static bool IsInt( string number )   
        {   
            //如果为空，认为验证合格   
            if ( IsNullOrEmpty( number ) )   
            {   
                return true;   
            }   
  
            //清除要验证字符串中的空格   
            number = number.Trim();   
  
            //模式字符串   
            string pattern = @"^[1-9]+[0-9]*$";   
  
            //验证   
            return RegexHelper.Validate( number, pattern );   
        }  
        #endregion  
 
        #region 验证是否为数字   
        /// <summary>   
        /// 验证是否为数字   
        /// </summary>   
        /// <param name="number">要验证的数字</param>           
        public static bool IsNumber( string number )   
        {   
            //如果为空，认为验证合格   
            if ( IsNullOrEmpty( number ) )   
            {   
                return true;   
            }   
  
            //清除要验证字符串中的空格   
            number = number.Trim();   
  
            //模式字符串   
            string pattern = @"^[1-9]+[0-9]*[.]?[0-9]*$";   
  
            //验证   
            return RegexHelper.Validate( number, pattern );   
        }  
        #endregion  
 
        #region 验证日期是否合法   
        /// <summary>   
        /// 验证日期是否合法,对不规则的作了简单处理   
        /// </summary>   
        /// <param name="date">日期</param>   
        public static bool IsDate( ref string date )   
        {   
            //如果为空，认为验证合格   
            if ( IsNullOrEmpty( date ) )   
            {   
                return true;   
            }   
  
            //清除要验证字符串中的空格   
            date = date.Trim();   
  
            //替换\   
            date = date.Replace( @"\","-" );   
            //替换/   
            date = date.Replace( @"/", "-" );   
  
            //如果查找到汉字"今",则认为是当前日期   
            if ( date.IndexOf( "今" ) != -1 )   
            {   
                date = DateTime.Now.ToString();   
            }   
  
            try  
            {   
                //用转换测试是否为规则的日期字符   
                date = Convert.ToDateTime( date ).ToString( "d" );   
                return true;   
            }   
            catch  
            {   
                //如果日期字符串中存在非数字，则返回false   
                if ( !IsInt( date ) )   
                {   
                    return false;   
                }  
 
                #region 对纯数字进行解析   
                //对8位纯数字进行解析   
                if ( date.Length == 8 )   
                {   
                    //获取年月日   
                    string year = date.Substring( 0, 4 );   
                    string month = date.Substring( 4, 2 );   
                    string day = date.Substring( 6, 2 );   
  
                    //验证合法性   
                    if ( Convert.ToInt32( year ) < 1900 || Convert.ToInt32( year ) > 2100 )   
                    {   
                        return false;   
                    }   
                    if ( Convert.ToInt32( month ) > 12 || Convert.ToInt32( day ) > 31 )   
                    {   
                        return false;   
                    }   
  
                    //拼接日期   
                    date = Convert.ToDateTime( year + "-" + month + "-" + day ).ToString( "d" );   
                    return true;   
                }   
  
                //对6位纯数字进行解析   
                if ( date.Length == 6 )   
                {   
                    //获取年月   
                    string year = date.Substring( 0, 4 );   
                    string month = date.Substring( 4, 2 );   
  
                    //验证合法性   
                    if ( Convert.ToInt32( year ) < 1900 || Convert.ToInt32( year ) > 2100 )   
                    {   
                        return false;   
                    }   
                    if ( Convert.ToInt32( month ) > 12 )   
                    {   
                        return false;   
                    }   
  
                    //拼接日期   
                    date = Convert.ToDateTime( year + "-" + month ).ToString( "d" );   
                    return true;   
                }   
  
                //对5位纯数字进行解析   
                if ( date.Length == 5 )   
                {   
                    //获取年月   
                    string year = date.Substring( 0, 4 );   
                    string month = date.Substring( 4, 1 );   
  
                    //验证合法性   
                    if ( Convert.ToInt32( year ) < 1900 || Convert.ToInt32( year ) > 2100 )   
                    {   
                        return false;   
                    }   
  
                    //拼接日期   
                    date = year + "-" + month;   
                    return true;   
                }   
  
                //对4位纯数字进行解析   
                if ( date.Length == 4 )   
                {   
                    //获取年   
                    string year = date.Substring( 0, 4 );   
  
                    //验证合法性   
                    if ( Convert.ToInt32( year ) < 1900 || Convert.ToInt32( year ) > 2100 )   
                    {   
                        return false;   
                    }   
  
                    //拼接日期   
                    date = Convert.ToDateTime( year ).ToString( "d" );   
                    return true;   
                }  
                #endregion   
  
                return false;   
            }   
        }  
        #endregion  
 
        #region 验证身份证是否合法   
        /// <summary>   
        /// 验证身份证是否合法   
        /// </summary>   
        /// <param name="idCard">要验证的身份证</param>           
        public static bool IsIdCard( string idCard )   
        {   
            //如果为空，认为验证合格   
            if ( IsNullOrEmpty( idCard ) )   
            {   
                return true;   
            }   
  
            //清除要验证字符串中的空格   
            idCard = idCard.Trim();   
  
            //模式字符串   
            StringBuilder pattern = new StringBuilder();   
            pattern.Append( @"^(11|12|13|14|15|21|22|23|31|32|33|34|35|36|37|41|42|43|44|45|46|" );   
            pattern.Append( @"50|51|52|53|54|61|62|63|64|65|71|81|82|91)" );   
            pattern.Append( @"(\d{13}|\d{15}[\dx])$" );   
  
            //验证   
            return RegexHelper.Validate( idCard, pattern.ToString() );   
        }  
        #endregion  
 
        #region 检测客户的输入中是否有危险字符串   
        /// <summary>   
        /// 检测客户输入的字符串是否有效,并将原始字符串修改为有效字符串或空字符串。   
        /// 当检测到客户的输入中有攻击性危险字符串,则返回false,有效返回true。   
        /// </summary>   
        /// <param name="input">要检测的字符串</param>   
        public static bool IsValidInput( ref string input )   
        {   
            try  
            {   
                if ( IsNullOrEmpty( input ) )   
                {   
                    //如果是空值,则跳出   
                    return true;   
                }   
                else  
                {   
                    //替换单引号   
                    input = input.Replace( "''", "''''" ).Trim();   
  
                    //检测攻击性危险字符串   
                    string testString = "and |or |exec |insert |select |delete |update |count |chr |mid |master |truncate |char |declare ";   
                    string[] testArray = testString.Split( ''|'' );   
                    foreach ( string testStr in testArray )   
                    {   
                        if ( input.ToLower().IndexOf( testStr ) != -1 )   
                        {   
                            //检测到攻击字符串,清空传入的值   
                            input = "";   
                            return false;   
                        }   
                    }   
  
                    //未检测到攻击字符串   
                    return true;   
                }   
            }   
            catch ( Exception ex )   
            {   
                LogHelper.WriteTraceLog( TraceLogLevel.Error, ex.Message );   
                return false;   
            }   
        }  
        #endregion   
    }   
}