常用的一些验证 System.Text.RegularExpressions 身份证号等

一.网络验证应用技巧

1. 验证 E-mail格式

public bool IsEmail(string str_Email) { return System.Text.RegularExpressions.Regex.IsMatch(str_Email,@"^([\w-\.]+)@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.)|(([\w-]+\.)+))([a-zA-Z]{2,4}|[0-9]{1,3})(\]?)$"); }

2. 验证 IP 地址

public 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 + "$")); }

3. 验证 URL

public bool IsUrl(string str_url) { return System.Text.RegularExpressions.Regex.IsMatch(str_url, @"http(s)?://([\w-]+\.)+[\w-]+(/[\w- ./?%&=]*)?"); }

二. 常用数字验证技巧

1. 验证电话号码

public bool IsTelephone(string str_telephone) { return System.Text.RegularExpressions.Regex.IsMatch(str_telephone, @"^(\d{3,4}-)?\d{6,8}$"); }

2. 输入密码条件(字符与数据同时出现)

public bool IsPassword(string str_password) { return System.Text.RegularExpressions.Regex.IsMatch(str_password, @"[A-Za-z]+[0-9]"); }

3. 邮政编号

public bool IsPostalcode(string str_postalcode) { return System.Text.RegularExpressions.Regex.IsMatch(str_postalcode, @"^\d{6}$"); }

4. 手机号码

public bool IsHandset(string str_handset) { return System.Text.RegularExpressions.Regex.IsMatch(str_handset, @"^[1]+[3,5]+\d{9}$"); }

5. 身份证号

public bool IsIDcard(string str_idcard) { return System.Text.RegularExpressions.Regex.IsMatch(str_idcard, @"(^\d{18}$)|(^\d{15}$)"); }

6. 两位小数

public bool IsDecimal(string str_decimal) { return System.Text.RegularExpressions.Regex.IsMatch(str_decimal, @"^[0-9]+(.[0-9]{2})?$"); }

7. 一年的12个月

public bool IsMonth(string str_Month) { return System.Text.RegularExpressions.Regex.IsMatch(str_Month, @"^(0?[[1-9]|1[0-2])$"); }

8. 一个月的31天

public bool IsDay(string str_day) { return System.Text.RegularExpressions.Regex.IsMatch(str_day, @"^((0?[1-9])|((1|2)[0-9])|30|31)$"); }

9. 数字输入

public bool IsNumber(string str_number) { return System.Text.RegularExpressions.Regex.IsMatch(str_number, @"^[0-9]*$"); } 10. 密码长度 (6-18位)

public bool IsPasswLength(string str_Length) { return System.Text.RegularExpressions.Regex.IsMatch(str_Length, @"^\d{6,18}$"); }

11. 非零的正整数

public bool IsIntNumber(string str_intNumber) { return System.Text.RegularExpressions.Regex.IsMatch(str_intNumber, @"^\+?[1-9][0-9]*$"); }

三. 常用字符验证技巧

1. 大写字母

public bool IsUpChar(string str_UpChar) { return System.Text.RegularExpressions.Regex.IsMatch(str_UpChar, @"^[A-Z]+$"); }

2. 小写字母

public bool IsLowChar(string str_UpChar) { return System.Text.RegularExpressions.Regex.IsMatch(str_UpChar, @"^[a-z]+$"); }

3. 检查字符串重复出现的词

private void btnWord_Click(object sender, EventArgs e) { System.Text.RegularExpressions.MatchCollection matches = System.Text.RegularExpressions.Regex.Matches(label1.Text, @"\b(?<word>\w+)\s+(\k<word>)\b", System.Text.RegularExpressions.RegexOptions.Compiled | System.Text.RegularExpressions.RegexOptions.IgnoreCase); if (matches.Count != 0) { foreach (System.Text.RegularExpressions.Match match in matches) { string word = match.Groups["word"].Value; MessageBox.Show(word.ToString(),"英文单词"); } } else { MessageBox.Show("没有重复的单词"); } }

4. 替换字符串

private void button1_Click(object sender, EventArgs e) { string strResult = System.Text.RegularExpressions.Regex.Replace(textBox1.Text, @"[A-Za-z]\*?", textBox2.Text); MessageBox.Show("替换前字符:" + "\n" + textBox1.Text + "\n" + "替换的字符:" + "\n" + textBox2.Text + "\n" + "替换后的字符:" + "\n" + strResult,"替换"); }

5. 拆分字符串

private void button1_Click(object sender, EventArgs e) { //实例: 甲025-8343243乙0755-2228382丙029-32983298389289328932893289丁 foreach (string s in System.Text.RegularExpressions.Regex.Split(textBox1.Text,@"\d{3,4}-\d*")) { textBox2.Text+=s; //依次输出 "甲乙丙丁" } }

6. 验证输入字母

public bool IsLetter(string str_Letter) { return System.Text.RegularExpressions.Regex.IsMatch(str_Letter, @"^[A-Za-z]+$"); }

7. 验证输入汉字

public bool IsChinese(string str_chinese) { return System.Text.RegularExpressions.Regex.IsMatch(str_chinese, @"^[\u4e00-\u9fa5],{0,}$"); }

8. 验证输入字符串 (至少8个字符)

public bool IsLength(string str_Length) { return System.Text.RegularExpressions.Regex.IsMatch(str_Length, @"^.{8,}$"); }