Is there any built-in utility or helper to parse HttpContext.Current.User.Identity.Name
, eg domain\\user\u003c/code> to get separately domain name if exists and user?
Or is there any other class to do so?
I understand that it's very easy to call
String.Split("\\")
but just interesting
This is better ( easier to use, no opportunity of NullReferenceExcpetion
and conforms MS coding guidelines about treating empty and null string equally ):
public static class Extensions
{
public static string GetDomain(this IIdentity identity)
{
string s = identity.Name;
int stop = s.IndexOf("\\");
return (stop > -1) ? s.Substring(0, stop) : string.Empty;
}
public static string GetLogin(this IIdentity identity)
{
string s = identity.Name;
int stop = s.IndexOf("\\");
return (stop > -1) ? s.Substring(stop + 1, s.Length - stop - 1) : string.Empty;
}
}
Usage:
IIdentity id = HttpContext.Current.User.Identity;
id.GetLogin();
id.GetDomain();
This requires C# 3.0 compiler (or newer) and doesn't require 3.0 .Net for working after compilation.
System.Environment.UserDomainName
gives you the domain name only
Similarly, System.Environment.UserName
gives you the user name only
var components = User.Identity.Name.Split('\\');
var userName = components.Last()
var domainName = components.Reverse().Skip(1).FirstOrDefault()
You guys might also consider parsing a string input like "user@company.com", or "user@domain".
This is what I'm currently doing:
If string contains '\\' then split string at '\\' and extract username and domain
Else If string contains '@' then split string at '@' and extract username and domain
Else treat string as username without a domain
I'm still hunting for a better solution in the case where the input string isn't in an easily predicted format, ie "domain\\user@domain". I'm thinking RegEx...
Update: I stand corrected. My answer is a bit of out context, it refers to the general case of parsing username and domains out of user input, like in user login/logon prompt. Hope it still helps someone.
I think No too, because I asked myself the same question the other day :D
You can try:
public static string GetDomain(string s)
{
int stop = s.IndexOf("\\");
return (stop > -1) ? s.Substring(0, stop + 1) : null;
}
public static string GetLogin(string s)
{
int stop = s.IndexOf("\\");
return (stop > -1) ? s.Substring(stop + 1, s.Length - stop - 1) : null;
}
Although not a .NET built-in, one can always P/Invoke to CredUIParseUserName . Here 'sa example of how to use it in .NET.
PS: It doesn't seem to handle the "dot", as in ".\\username".
我不这么认为,因为System.Security.Principal.WindowsIdentity不包含这样的成员。
Seems like a problem made to be solved by regular expressions:
public static class UserExtensions
{
public static string GetDomain(this IIdentity identity)
{
Regex.Match(identity.Name, ".*\\\\").ToString()
}
public static string GetLogin(this IIdentity identity)
{
return Regex.Replace(identity.Name, ".*\\\\", "");
}
}
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