C#扩展工具类
编辑
46
2022-09-02
本脚本实用C#扩展方法，对C#原有方法进行一定扩展
实现功能
- 链式调用
- md5计算
- string转int、float、double
- 判断字符串是否为邮箱、手机号、身份证号、url、ipv4、ipv6、是否包含中文、是否是英文、是否是大写英文、是否是小写英文
- 获取时间戳
- 时间差计算
使用
using System.Text;
using System.Text.RegularExpressions;
namespace Tool;
public static class Expand
{
# region 链式调用
/// <summary>
/// 链式调用
/// </summary>
/// <param name="t">自身传递</param>
/// <param name="action">委托调用</param>
/// <typeparam name="T">自身类</typeparam>
/// <returns>自身传出</returns>
public static T Do<T>(this T t, Action<T> action)
{
action(t);
return t;
}
#endregion
#region md5计算
/// <summary>
/// 计算md5值
/// </summary>
/// <param name="str">自身传递</param>
/// <param name="toUpper">是否为大写</param>
/// <param name="to16">是否为16位md5</param>
/// <returns>md5</returns>
public static string ToMd5(this string str, bool toUpper = false, bool to16 = false)
{
//将str进行MD5加密
var md5 = System.Security.Cryptography.MD5.Create();
var bs = md5.ComputeHash(Encoding.UTF8.GetBytes(str));
var sb = new StringBuilder();
foreach (var b in bs)
{
sb.Append(b.ToString(toUpper ? "X2" : "x2"));
}
return to16 ? sb.ToString().Substring(8, 16) : sb.ToString();
}
/// <summary>
/// 计算md5值
/// </summary>
/// <param name="bytes">自身传递</param>
/// <param name="toUpper">是否为大写</param>
/// <param name="to16">是否为16位md5</param>
/// <returns>md5</returns>
public static string ToMd5(this byte[] bytes, bool toUpper = false, bool to16 = false)
{
var md5 = System.Security.Cryptography.MD5.Create();
var bs = md5.ComputeHash(bytes);
var sb = new StringBuilder();
foreach (var b in bs)
{
sb.Append(b.ToString(toUpper ? "X2" : "x2"));
}
return to16 ? sb.ToString().Substring(8, 16) : sb.ToString();
}
#endregion
#region 字符串转换
/// <summary>
/// string转int
/// </summary>
/// <param name="str">自身传递</param>
/// <returns>int值</returns>
/// <exception cref="Exception">转换失败</exception>
public static int ToInt(this string str)
{
return int.TryParse(str, out var result) ? result : throw new Exception("string转换为int失败");
}
/// <summary>
/// string转float
/// </summary>
/// <param name="str">自身传递</param>
/// <returns>float值</returns>
/// <exception cref="Exception">转换失败</exception>
public static float ToFloat(this string str)
{
return float.TryParse(str, out var result) ? result : throw new Exception("string转换为float失败");
}
/// <summary>
/// string转double
/// </summary>
/// <param name="str">自身传递</param>
/// <returns>double值</returns>
/// <exception cref="Exception">转换失败</exception>
public static double ToDouble(this string str)
{
return double.TryParse(str, out var result) ? result : throw new Exception("string转换为double失败");
}
#endregion
#region 字符串格式判断
/// <summary>
/// 判断是否是Email格式
/// </summary>
/// <param name="str">自身传递</param>
/// <returns></returns>
public static bool IsEmail(this string str)
{
return Regex.IsMatch(str,
@"^[A-Za-z0-9](([_\.\-]?[a-zA-Z0-9]+)*)@([A-Za-z0-9]+)(([\.\-]?[a-zA-Z0-9]+)*)\.([A-Za-z]{2,})$");
}
/// <summary>
/// 判断是否是手机号格式
/// </summary>
/// <param name="str">自身传递</param>
/// <returns></returns>
public static bool IsMobile(this string str)
{
return Regex.IsMatch(str, @"^1[3456789]\d{9}$");
}
/// <summary>
/// 判断是否是身份证号格式
/// </summary>
/// <param name="str">自身传递</param>
/// <returns></returns>
public static bool IsIdCard(this string str)
{
return Regex.IsMatch(str,
@"^[1-9]\d{7}((0\d)|(1[0-2]))(([0|1|2]\d)|3[0-1])\d{3}$|^[1-9]\d{5}[1-9]\d{3}((0\d)|(1[0-2]))(([0|1|2]\d)|3[0-1])\d{3}([0-9]|X|x)$");
}
/// <summary>
/// 判断是否是Url格式
/// </summary>
/// <param name="str">自身传递</param>
/// <returns></returns>
public static bool IsUrl(this string str)
{
return Regex.IsMatch(str,
@"^(http|https|ftp|rtsp|mms):(\/\/|\\\\)[A-Za-z0-9%\-_@]+\.[A-Za-z0-9%\-_@]+[A-Za-z0-9\.\/=\?%\-&_~`@:\+!;]*$");
}
/// <summary>
/// 判断是否是ipv4格式
/// </summary>
/// <param name="str"></param>
/// <returns></returns>
public static bool IsIpv4(this string str)
{
return Regex.IsMatch(str, @"^((25[0-5]|2[0-4]\d|[01]?\d\d?)\.){3}(25[0-5]|2[0-4]\d|[01]?\d\d?)$");
}
/// <summary>
/// 判断是否是ipv6格式
/// </summary>
/// <param name="str"></param>
/// <returns></returns>
public static bool IsIpv6(this string str)
{
return Regex.IsMatch(str,
@"^([\da-fA-F]{1,4}:){6}((25[0-5]|2[0-4]\d|[01]?\d\d?)\.){3}(25[0-5]|2[0-4]\d|[01]?\d\d?)$|^::([\da-fA-F]{1,4}:){0,4}((25[0-5]|2[0-4]\d|[01]?\d\d?)\.){3}(25[0-5]|2[0-4]\d|[01]?\d\d?)$|^([\da-fA-F]{1,4}:):([\da-fA-F]{1,4}:){0,3}((25[0-5]|2[0-4]\d|[01]?\d\d?)\.){3}(25[0-5]|2[0-4]\d|[01]?\d\d?)$|^([\da-fA-F]{1,4}:){2}:([\da-fA-F]{1,4}:){0,2}((25[0-5]|2[0-4]\d|[01]?\d\d?)\.){3}(25[0-5]|2[0-4]\d|[01]?\d\d?)$|^([\da-fA-F]{1,4}:){3}:([\da-fA-F]{1,4}:){0,1}((25[0-5]|2[0-4]\d|[01]?\d\d?)\.){3}(25[0-5]|2[0-4]\d|[01]?\d\d?)$|^([\da-fA-F]{1,4}:){4}:((25[0-5]|2[0-4]\d|[01]?\d\d?)\.){3}(25[0-5]|2[0-4]\d|[01]?\d\d?)$|^([\da-fA-F]{1,4}:){7}[\da-fA-F]{1,4}$|^:((:[\da-fA-F]{1,4}){1,6}|:)$|^[\da-fA-F]{1,4}:((:[\da-fA-F]{1,4}){1,5}|:)$|^([\da-fA-F]{1,4}:){2}((:[\da-fA-F]{1,4}){1,4}|:)$|^([\da-fA-F]{1,4}:){3}((:[\da-fA-F]{1,4}){1,3}|:)$|^([\da-fA-F]{1,4}:){4}((:[\da-fA-F]{1,4}){1,2}|:)$|^([\da-fA-F]{1,4}:){5}:([\da-fA-F]{1,4})?$|^([\da-fA-F]{1,4}:){6}:$");
}
/// <summary>
/// 判断是否是ip格式
/// </summary>
/// <param name="str"></param>
/// <returns></returns>
public static bool IsIp(this string str)
{
return Regex.IsMatch(str,
@"^((25[0-5]|2[0-4]\d|[01]?\d\d?)\.){3}(25[0-5]|2[0-4]\d|[01]?\d\d?)$|^([\da-fA-F]{1,4}:){6}((25[0-5]|2[0-4]\d|[01]?\d\d?)\.){3}(25[0-5]|2[0-4]\d|[01]?\d\d?)$|^::([\da-fA-F]{1,4}:){0,4}((25[0-5]|2[0-4]\d|[01]?\d\d?)\.){3}(25[0-5]|2[0-4]\d|[01]?\d\d?)$|^([\da-fA-F]{1,4}:):([\da-fA-F]{1,4}:){0,3}((25[0-5]|2[0-4]\d|[01]?\d\d?)\.){3}(25[0-5]|2[0-4]\d|[01]?\d\d?)$|^([\da-fA-F]{1,4}:){2}:([\da-fA-F]{1,4}:){0,2}((25[0-5]|2[0-4]\d|[01]?\d\d?)\.){3}(25[0-5]|2[0-4]\d|[01]?\d\d?)$|^([\da-fA-F]{1,4}:){3}:([\da-fA-F]{1,4}:){0,1}((25[0-5]|2[0-4]\d|[01]?\d\d?)\.){3}(25[0-5]|2[0-4]\d|[01]?\d\d?)$|^([\da-fA-F]{1,4}:){4}:((25[0-5]|2[0-4]\d|[01]?\d\d?)\.){3}(25[0-5]|2[0-4]\d|[01]?\d\d?)$|^([\da-fA-F]{1,4}:){7}[\da-fA-F]{1,4}$|^:((:[\da-fA-F]{1,4}){1,6}|:)$|^[\da-fA-F]{1,4}:((:[\da-fA-F]{1,4}){1,5}|:)$|^([\da-fA-F]{1,4}:){2}((:[\da-fA-F]{1,4}){1,4}|:)$|^([\da-fA-F]{1,4}:){3}((:[\da-fA-F]{1,4}){1,3}|:)$|^([\da-fA-F]{1,4}:){4}((:[\da-fA-F]{1,4}){1,2}|:)$|^([\da-fA-F]{1,4}:){5}:([\da-fA-F]{1,4})?$|^([\da-fA-F]{1,4}:){6}:$");
}
/// <summary>
/// 判断是否包含中文
/// </summary>
/// <param name="str"></param>
/// <returns></returns>
public static bool IsChinese(this string str)
{
return Regex.IsMatch(str, @"[\u4e00-\u9fa5]");
}
/// <summary>
/// 判断是否是中文姓名格式
/// </summary>
/// <param name="str"></param>
/// <returns></returns>
public static bool IsChineseName(this string str)
{
return Regex.IsMatch(str, @"^[\u4e00-\u9fa5]{2,4}$");
}
/// <summary>
/// 判断是否是英文
/// </summary>
/// <param name="str"></param>
/// <returns></returns>
public static bool IsEnglish(this string str)
{
return Regex.IsMatch(str, @"^[A-Za-z]+$");
}
/// <summary>
/// 判断是否是大写英文
/// </summary>
/// <param name="str"></param>
/// <returns></returns>
public static bool IsUpperEnglish(this string str)
{
return Regex.IsMatch(str, @"^[A-Z]+$");
}
/// <summary>
/// 判断是否是小写英文
/// </summary>
/// <param name="str"></param>
/// <returns></returns>
public static bool IsLowerEnglish(this string str)
{
return Regex.IsMatch(str, @"^[a-z]+$");
}
#endregion
#region 敏感信息处理
/// <summary>
/// 身份证号码脱敏
/// </summary>
/// <param name="str"></param>
/// <returns></returns>
public static string MaskIdCard(this string str)
{
return str.IsIdCard()
? str.Substring(0, 6) + "********" + str.Substring(14, 4)
: throw new Exception("不是有效的身份证号码");
}
/// <summary>
/// 手机号码脱敏
/// </summary>
/// <param name="str"></param>
/// <returns></returns>
/// <exception cref="Exception"></exception>
public static string MaskMobile(this string str)
{
return str.IsMobile()
? str.Substring(0, 3) + "****" + str.Substring(7, 4)
: throw new Exception("不是有效的手机号码");
}
/// <summary>
/// 邮箱脱敏
/// </summary>
/// <param name="str"></param>
/// <returns></returns>
/// <exception cref="Exception"></exception>
public static string MaskEmail(this string str)
{
return str.IsEmail()
? str.Substring(0, 3) + "****" + str.Substring(str.IndexOf('@'))
: throw new Exception("不是有效的邮箱地址");
}
#endregion
#region 时间戳转换
/// <summary>
/// 获取毫秒级时间戳
/// </summary>
/// <param name="dt"></param>
/// <returns></returns>
public static double GetTotalMilliseconds(this DateTime dt)
{
return (dt - new DateTime(1970, 1, 1)).TotalMilliseconds;
}
/// <summary>
/// 获取秒级时间戳
/// </summary>
/// <param name="dt"></param>
/// <returns></returns>
public static double GetTotalSeconds(this DateTime dt)
{
return (dt - new DateTime(1970, 1, 1)).TotalSeconds;
}
/// <summary>
/// 毫秒级时间戳转换为DateTime
/// </summary>
/// <param name="timestamp"></param>
/// <returns></returns>
public static DateTime ToDateTimeMilliseconds(this double timestamp)
{
return new DateTime(1970, 1, 1).AddMilliseconds(timestamp);
}
/// <summary>
/// 秒级时间戳转换为DateTime
/// </summary>
/// <param name="timestamp"></param>
/// <returns></returns>
public static DateTime ToDateTimeSeconds(this double timestamp)
{
return new DateTime(1970, 1, 1).AddSeconds(timestamp);
}
/// <summary>
/// 获取时间差
/// </summary>
/// <param name="dt"></param>
/// <param name="dt2">传入时间</param>
/// <returns>返回时间差 小于0为在之前，大于0为在之后 </returns>
public static TimeSpan GetTimeDifference(this DateTime dt, DateTime dt2 = default)
{
return dt - (dt2 == default(DateTime) ? DateTime.UtcNow : dt2);
}
#endregion
}
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