C#中常用的正则表达式实例

//验证电话号码<br>public bool IsTelephone(string str_telephone){return System.Text.RegularExpressions. Regex.IsMatch(str_telephone, @"^(/d{3,4}-)?/d{6,8}$");}//验证密码public bool IsPassword(string str_password){return System.Text.RegularExpressions. Regex.IsMatch(str_password, @"[A-Za-z]+[0-9]");}//验证邮政编码public bool IsPostalcode(string str_postalcode){return System.Text.RegularExpressions.Regex.IsMatch(str_postalcode, @"^/d{6}$");}//验证手机号码public bool IsHandset(string str_handset){return System.Text.RegularExpressions.Regex. IsMatch(str_handset, @"^[1][3-5]/d{9}$");}//验证身份证public bool IsIDcard(string str_idcard){return System.Text.RegularExpressions.Regex. IsMatch(str_idcard, @"(^/d{18}$)|(^/d{15}$)");}//验证小数格式public bool IsDecimal(string str_decimal){return System.Text.RegularExpressions.Regex. IsMatch(str_decimal, @"^[0-9]+/.[0-9]{2}$");}//验证月份public bool IsMonth(string str_Month){return System.Text.RegularExpressions.Regex. IsMatch(str_Month, @"^(0?[[1-9]|1[0-2])$");}//验证天数public bool IsDay(string str_day){return System.Text.RegularExpressions.Regex. IsMatch(str_day, @"^((0?[1-9])|((1|2)[0-9])|30|31)$");}//验证是否为数字public bool IsNumber(string str_number){return System.Text.RegularExpressions.Regex. IsMatch(str_number, @"^[0-9]*$");}//验证密码长度public bool IsPasswLength(string str_Length){return System.Text.RegularExpressions.Regex. IsMatch(str_Length, @"^/d{6,18}$");}//验证正整数public bool IsIntNumber(string str_intNumber){return System.Text.RegularExpressions.Regex. IsMatch(str_intNumber, @"^/+?[1-9][0-9]*$");}//验证大小写public bool IsUpChar(string str_UpChar){return System.Text.RegularExpressions.Regex. IsMatch(str_UpChar, @"^[A-Z]+$");}public bool IsLowerChar(string str_UpChar){return System.Text.RegularExpressions.Regex. IsMatch(str_UpChar, @"^[a-z]+$");}//验证是否为字母public bool IsLetter(string str_Letter){return System.Text.RegularExpressions.Regex. IsMatch(str_Letter, @"^[A-Za-z]+$");}//验证是否为中文public bool IsChinese(string str_chinese){return System.Text.RegularExpressions.Regex. IsMatch(str_chinese, @"^[/u4e00-/u9fa5]{1,}$");}//验证邮箱public bool IsEmail(string str_Email){return System.Text.RegularExpressions.Regex.IsMatch(str_Email, @"^(([/w/.]+)@(([[0-9]{1,3}/.[0-9]{1,3}/.[0-9]{1,3}))|((/w+/.?)+)@([a-zA-Z]{2,4}|[0-9]{1,3})(/.[a-zA-Z]{2,4}))$");}//验证IPpublic bool IPCheck(string IP){string num = @"(25[0-5]|2[0-4]/d|[0-1]/d{2}|[1-9]?/d)"; return Regex.IsMatch(IP, ("^" + num + "//." + num + "//." + num + "//." + num + "$"));}//验证Urlpublic bool IsUrl(string str_url){return System.Text.RegularExpressions.Regex.IsMatch(str_url, @"http(s)?://([/w-]+/.)+[/w-]+(/[/w- ./?%&=]*)?");}