Asp.net C # verify email address, phone number, mobile phone number, English number, date, ID card, zip code, URL, IP address type Regular Expression Verification

The following lists various forms of verification functions that are commonly used in development, including email, phone, ip, website, date, ID card, etc.

# Region verified email address

/** // <Summary>
/// Verify the email address
/// </Summary>
/// <Param name = "source"> </param>
/// <Returns> </returns>
Public static bool IsEmail (string source)
{
Return Regex. IsMatch (source, @ "^ [A-Za-z0-9] ([_.-]? [A-zA-Z0-9] +) *) @ ([A-Za-z0-9] +) ([.-]? [A-zA-Z0-9] +) *). ([A-Za-z] {2,}) $ ", RegexOptions. IgnoreCase );
}
Public static bool HasEmail (string source)
{
Return Regex. IsMatch (source, @ "[A-Za-z0-9] ([_.-]? [A-zA-Z0-9] +) *) @ ([A-Za-z0-9] +) ([.-]? [A-zA-Z0-9] +) *). ([A-Za-z] {2,}) ", RegexOptions. IgnoreCase );
}
# Endregion

# Region verification URL
/** // <Summary>
/// Verify the URL
/// </Summary>
/// <Param name = "source"> </param>
/// <Returns> </returns>
Public static bool IsUrl (string source)
{
Return Regex. isMatch (source, @ "^ (file | gopher | news | nntp | telnet | http | ftp | https tutorial | ftps | sftp )://) | (www .)) + ([a-zA-Z0-9. _-] +. [a-zA-Z] {2, 6}) | ([0-9] {1, 3 }. [0-9] {1, 3 }. [0-9] {1, 3 }. [0-9] {}) (/[a-zA-Z0-9 & amp; % _. /-~ -] *)? $ ", RegexOptions. IgnoreCase );
}
Public static bool HasUrl (string source)
{
Return Regex. isMatch (source, @ "(file | gopher | news | nntp | telnet | http | ftp | https | ftps | sftp): //) | (www .)) + ([a-zA-Z0-9. _-] +. [a-zA-Z] {2, 6}) | ([0-9] {1, 3 }. [0-9] {1, 3 }. [0-9] {1, 3 }. [0-9] {}) (/[a-zA-Z0-9 & amp; % _. /-~ -] *)? ", RegexOptions. IgnoreCase );
}
# Endregion

# Region verification date
/** // <Summary>
/// Verification date
/// </Summary>
/// <Param name = "source"> </param>
/// <Returns> </returns>
Public static bool IsDateTime (string source)
{
Try
{
DateTime time = Convert. ToDateTime (source );
Return true;
}
Catch
{
Return false;
}
}
# Endregion

# Region verification mobile phone number
/** // <Summary>
/// Verify the mobile phone number
/// </Summary>
/// <Param name = "source"> </param>
/// <Returns> </returns>
Public static bool IsMobile (string source)
{
Return Regex. IsMatch (source, @ "^ 1 [35] d {9} $", RegexOptions. IgnoreCase );
}
Public static bool HasMobile (string source)
{
Return Regex. IsMatch (source, @ "1 [35] d {9}", RegexOptions. IgnoreCase );
}
# Endregion

# Region IP address verification
/** // <Summary>
/// Verify the IP address
/// </Summary>
/// <Param name = "source"> </param>
/// <Returns> </returns>
Public static bool IsIP (string source)
{
Return Regex. isMatch (source, @ "^ (25 [0-5] | 2 [0-4] [0-9] | [0-1] {1} [0-9] {2} | [1-9] {1} [0-9] {1} | [1-9]). (25 [0-5] | 2 [0-4] [0-9] | [0-1] {1} [0-9] {2} | [1- 9] {1} [0-9] {1} | [1-9] | 0 ). (25 [0-5] | 2 [0-4] [0-9] | [0-1] {1} [0-9] {2} | [1- 9] {1} [0-9] {1} | [1-9] | 0 ). (25 [0-5] | 2 [0-4] [0-9] | [0-1] {1} [0-9] {2} | [1- 9] {1} [0-9] {1} | [0-9]) $ ", RegexOptions. ignoreCase );
}
Public static bool HasIP (string source)
{
Return Regex. isMatch (source, @ "(25 [0-5] | 2 [0-4] [0-9] | [0-1] {1} [0-9] {2} | [1-9] {1} [0-9] {1} | [1-9]). (25 [0-5] | 2 [0-4] [0-9] | [0-1] {1} [0-9] {2} | [1- 9] {1} [0-9] {1} | [1-9] | 0 ). (25 [0-5] | 2 [0-4] [0-9] | [0-1] {1} [0-9] {2} | [1- 9] {1} [0-9] {1} | [1-9] | 0 ). (25 [0-5] | 2 [0-4] [0-9] | [0-1] {1} [0-9] {2} | [1- 9] {1} [0-9] {1} | [0-9]) ", RegexOptions. ignoreCase );
}
# Endregion
# Region verify ID card validity
/** // <Summary>
/// Verify whether the ID card is valid
/// </Summary>
/// <Param name = "Id"> </param>
/// <Returns> </returns>
Public static bool IsIDCard (string Id)
{
If (Id. Length = 18)
{
Bool check = IsIDCard18 (Id );
Return check;
}
Else if (Id. Length = 15)
{
Bool check = IsIDCard15 (Id );
Return check;
}
Else
{
Return false;
}
}

Public static bool IsIDCard18 (string Id)
{
Long n = 0;
If (long. tryParse (Id. remove (17), out n) = false | n <Math. pow (10, 16) | long. tryParse (Id. replace ('x', '0 '). replace ('x', '0'), out n) = false)
{
Return false; // digit Verification
}
String address = "11x22x35x44x53x12x23x36x45x54x13x31x37x46x61x14x32x41x50x62x15x33x42x51x63x21x34x43x52x64x65x71x81x82x91 ";
If (address. IndexOf (Id. Remove (2) =-1)
{
Return false; // province Verification
}
String birth = Id. Substring (6, 8). Insert (6, "-"). Insert (4 ,"-");
DateTime time = new DateTime ();
If (DateTime. TryParse (birth, out time) = false)
{
Return false; // birthday Verification
}
String [] arrVarifyCode = (", 0, x, 9, 8, 4,"). Split (',');
String [] Wi = (","). Split (',');
Char [] Ai = Id. Remove (17). ToCharArray ();
Int sum = 0;
For (int I = 0; I <17; I ++)
{
Sum + = int. Parse (Wi [I]) * int. Parse (Ai [I]. ToString ());
}
Int y =-1;
Math. DivRem (sum, 11, out y );
If (arrVarifyCode [y]! = Id. Substring (17, 1). ToLower ())
{
Return false; // Verification Code
}
Return true; // conforms to GB11643-1999 standards
}

Public static bool IsIDCard15 (string Id)
{
Long n = 0;
If (long. TryParse (Id, out n) = false | n <Math. Pow (10, 14 ))
{
Return false; // digit Verification
}
String address = "11x22x35x44x53x12x23x36x45x54x13x31x37x46x61x14x32x41x50x62x15x33x42x51x63x21x34x43x52x64x65x71x81x82x91 ";
If (address. IndexOf (Id. Remove (2) =-1)
{
Return false; // province Verification
}
String birth = Id. Substring (6, 6). Insert (4, "-"). Insert (2 ,"-");
DateTime time = new DateTime ();
If (DateTime. TryParse (birth, out time) = false)
{
Return false; // birthday Verification
}
Return true; // meets the 15-digit ID card Standard
}
# Endregion

# Is region Int type?
/** // <Summary>
/// Whether it is Int type
/// </Summary>
/// <Param name = "source"> </param>
/// <Returns> </returns>
Public static bool IsInt (string source)
{
Regex regex = new Regex (@ "^ (-) {0, 1} d + $ ");
If (regex. Match (source). Success)
{
If (long. Parse (source)> 0x7fffffl) | (long. Parse (source) <-2147483648L ))
{
Return false;
}
Return true;
}
Return false;
}
# Endregion

# Region: Check whether the length of a string is two characters in Chinese within a limit.
/** // <Summary>
/// Check whether the length of a string is two characters in Chinese between a limited number
/// </Summary>
/// <Param name = "source"> string </param>
/// <Param name = "begin"> greater than or equal to </param>
/// <Param name = "end"> less than or equal to </param>
/// <Returns> </returns>
Public static bool IsLengthStr (string source, int begin, int end)
{
Int length = Regex. Replace (source, @ "[^x00-xff]", "OK"). Length;
If (length <= begin) & (length> = end ))
{
Return false;
}
Return true;
}
# Endregion

# Is region a Chinese phone number in the format of 010-85849685?
/** // <Summary>
/// Is it a Chinese phone number, in the format of 010-85849685
/// </Summary>
/// <Param name = "source"> </param>
/// <Returns> </returns>
Public static bool IsTel (string source)
{
Return Regex. IsMatch (source, @ "^ d {3, 4 }-? D {6, 8} $ ", RegexOptions. IgnoreCase );
}
# Endregion

# Region zip code 6 digits
/** // <Summary>
/// Zip code 6 digits
/// </Summary>
/// <Param name = "source"> </param>
/// <Returns> </returns>
Public static bool IsPostCode (string source)
{
Return Regex. IsMatch (source, @ "^ d {6} $", RegexOptions. IgnoreCase );
}
# Endregion

# Region Chinese
/** // <Summary>
/// Chinese
/// </Summary>
/// <Param name = "source"> </param>
/// <Returns> </returns>
Public static bool IsChinese (string source)
{
Return Regex. IsMatch (source, @ "^ [u4e00-u9fa5] + $", RegexOptions. IgnoreCase );
}
Public static bool hasChinese (string source)
{
Return Regex. IsMatch (source, @ "[u4e00-u9fa5] +", RegexOptions. IgnoreCase );
}
# Endregion

# Region check whether it is a normal combination of letters, numbers, and underscores
/** // <Summary>
/// Check whether a combination of letters, numbers, and underscores is normal.
/// </Summary>
/// <Param name = "source"> </param>
/// <Returns> </returns>
Public static bool IsNormalChar (string source)
{
Return Regex. IsMatch (source, @ "[wd _] +", RegexOptions. IgnoreCase );
}
# Endregion