本文实例讲述了C#常用正则验证函数。分享给大家供大家参考，具体如下：
1、Ip地址验证
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/// <summary>
/// Ip地址验证
/// </summary>
public static bool CheckIp(string ip)
{
bool result = false;
Regex ipReg = new Regex(@"^(\d{1,2}|1\d\d|2[0-4]\d|25[0-5])\.(\d{1,2}|1\d\d|2[0-4]\d|25[0-5])\.(\d{1,2}|1\d\d|2[0-4]\d|25[0-5])\.(\d{1,2}|1\d\d|2[0-4]\d|25[0-5])$");
if (ipReg.IsMatch(ip))
{
result = true;
}
return result;
}
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2、价格验证
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/// <summary>
/// 价格验证
/// </summary>
/// <param name="priceStr"></param>
/// <returns></returns>
public bool CheckPrice(string priceStr)
{
bool result = false;
Regex regex = new Regex(@"^\d+(\.\d{1,2})?$", RegexOptions.IgnoreCase);
Match match = regex.Match(priceStr);
if (match.Success)
{
result = true;
}
return result;
}
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3、正整数验证
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/// <summary>
/// 正整数验证
/// </summary>
public static bool CheckPositiveInteger(string numStr)
{
bool result = false;
Regex regex = new Regex(@"^[1-9]\d*$", RegexOptions.IgnoreCase);
Match match = regex.Match(numStr);
if (match.Success)
{
result = true;
}
return result;
}
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希望本文所述对大家C#程序设计有所帮助。