C# 判断字符串是否符合十六进制，八进制，二进制和十进制整数格式的正则表达式...

　　　　  /// <summary>/// 判断是否十六进制格式字符串/// </summary>/// <param name="str"></param>/// <returns></returns>public bool IsHexadecimal(string str){const string PATTERN = @"[A-Fa-f0-9]+$";return System.Text.RegularExpressions.Regex.IsMatch(str, PATTERN);}/// <summary>/// 判断是否八进制格式字符串/// </summary>/// <param name="str"></param>/// <returns></returns>public bool IsOctal(string str){const string PATTERN = @"[0-7]+$";return System.Text.RegularExpressions.Regex.IsMatch(str, PATTERN);}/// <summary>/// 判断是否二进制格式字符串/// </summary>/// <param name="str"></param>/// <returns></returns>public bool IsBinary(string str){const string PATTERN = @"[0-1]+$";return System.Text.RegularExpressions.Regex.IsMatch(str, PATTERN);}/// <summary>/// 判断是否十进制格式字符串/// </summary>/// <param name="str"></param>/// <returns></returns>public bool IsDecimal(string str){const string PATTERN = @"[0-9]+$";return System.Text.RegularExpressions.Regex.IsMatch(str, PATTERN);}