A few summaries of c sharp common regular expressions
- 2020-05-05 11:05:58
- OfStack
using System;
using System.Text.RegularExpressions;
namespace CommonTools
{
/**//// < summary >
/// a summary of RegexLib .
/// < /summary >
public class RegexLib
{
// verify Email address
public static bool IsValidEmail(string strIn)
{
// Return true if strIn is in valid e-mail format.
return Regex.IsMatch(strIn, @"^([\w-\.]+)@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.)|(([\w-]+\.)+))([a-zA-Z]{2,4}|[0-9]{1,3})(\]?)$");
}
// the date form of dd-mm-yy replaces the date form of mm/dd/yy .
public static string MDYToDMY(String input)
{
return Regex.Replace(input,"\\b(?\\d{1,2})/(?\\d{1,2})/(?\\d{2,4})\\b","${day}-${month}-${year}");
}
// verify the decimal
public static bool IsValidDecimal(string strIn)
{
return Regex.IsMatch(strIn,@"[0].\d{1,2}|[1]");
}
// verify that the number is
public static bool IsValidTel(string strIn)
{
return Regex.IsMatch(strIn,@"(\d+-)?(\d{4}-?\d{7}|\d{3}-?\d{8}|^\d{7,8})(-\d+)?");
}
// verify year month date
public static bool IsValidDate(string strIn)
{
return Regex.IsMatch(strIn,@"^2\d{3}-(?:0?[1-9]|1[0-2])-(?:0?[1-9]|[1-2]\d|3[0-1])(?:0?[1-9]|1\d|2[0-3]):(?:0?[1-9]|[1-5]\d):(?:0?[1-9]|[1-5]\d)$");
}
// verify suffix
public static bool IsValidPostfix(string strIn)
{
return Regex.IsMatch(strIn,@"\.(?i:gif|jpg)$");
}
// verify that the characters are between 4 and 12
public static bool IsValidByte(string strIn)
{
return Regex.IsMatch(strIn,@"^[a-z]{4,12}$");
}
// verify IP
public static bool IsValidIp(string strIn)
{
return Regex.IsMatch(strIn,@"^(\d{1,2}|1\d\d|2[0-4]\d|25[0-5])\.(\d{1,2}|1\d\d|2[0-4]\d|25[0-5])\.(\d{1,2}|1\d\d|2[0-4]\d|25[0-5])\.(\d{1,2}|1\d\d|2[0-4]\d|25[0-5])$");
}
}
}
using System.Text.RegularExpressions;
namespace CommonTools
{
/**//// < summary >
/// a summary of RegexLib .
/// < /summary >
public class RegexLib
{
// verify Email address
public static bool IsValidEmail(string strIn)
{
// Return true if strIn is in valid e-mail format.
return Regex.IsMatch(strIn, @"^([\w-\.]+)@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.)|(([\w-]+\.)+))([a-zA-Z]{2,4}|[0-9]{1,3})(\]?)$");
}
// the date form of dd-mm-yy replaces the date form of mm/dd/yy .
public static string MDYToDMY(String input)
{
return Regex.Replace(input,"\\b(?\\d{1,2})/(?\\d{1,2})/(?\\d{2,4})\\b","${day}-${month}-${year}");
}
// verify the decimal
public static bool IsValidDecimal(string strIn)
{
return Regex.IsMatch(strIn,@"[0].\d{1,2}|[1]");
}
// verify that the number is
public static bool IsValidTel(string strIn)
{
return Regex.IsMatch(strIn,@"(\d+-)?(\d{4}-?\d{7}|\d{3}-?\d{8}|^\d{7,8})(-\d+)?");
}
// verify year month date
public static bool IsValidDate(string strIn)
{
return Regex.IsMatch(strIn,@"^2\d{3}-(?:0?[1-9]|1[0-2])-(?:0?[1-9]|[1-2]\d|3[0-1])(?:0?[1-9]|1\d|2[0-3]):(?:0?[1-9]|[1-5]\d):(?:0?[1-9]|[1-5]\d)$");
}
// verify suffix
public static bool IsValidPostfix(string strIn)
{
return Regex.IsMatch(strIn,@"\.(?i:gif|jpg)$");
}
// verify that the characters are between 4 and 12
public static bool IsValidByte(string strIn)
{
return Regex.IsMatch(strIn,@"^[a-z]{4,12}$");
}
// verify IP
public static bool IsValidIp(string strIn)
{
return Regex.IsMatch(strIn,@"^(\d{1,2}|1\d\d|2[0-4]\d|25[0-5])\.(\d{1,2}|1\d\d|2[0-4]\d|25[0-5])\.(\d{1,2}|1\d\d|2[0-4]\d|25[0-5])\.(\d{1,2}|1\d\d|2[0-4]\d|25[0-5])$");
}
}
}