IdnMapping.GetHashCode Method
Returns a hash code for this IdnMapping object.
Namespace: System.Globalization
Assembly: mscorlib (in mscorlib.dll)
Return Value
Type: System.Int32One of four 32-bit signed constants derived from the properties of an IdnMapping object. The return value has no special meaning and is not suitable for use in a hash code algorithm.
The following example assumes that a single string can contain multiple email addresses separated by spaces. It removes the local part and the @ character from each email address, and passes the resulting domain name to the GetAscii(String, Int32) or GetAscii(String, Int32, Int32) method to create a Punycode domain name. The GetUnicode(String, Int32, Int32) method then converts the Punycode domain name back into the original domain name.
using System; using System.Globalization; public class Example { public static void Main() { string email = "johann_doe@bücher.com john_doe@hotmail.com иван@мойдомен.рф"; IdnMapping idn = new IdnMapping(); int start = 0, end = 0; while (end >= 0) { start = email.IndexOf("@", end); end = email.IndexOf(" ", start); string domain = String.Empty; try { string punyCode = String.Empty; if (start >= 0 && end >= 0) { domain = email.Substring(start + 1, end - start - 1); punyCode = idn.GetAscii(email, start + 1, end - start - 1); } else { domain = email.Substring(start + 1); punyCode = idn.GetAscii(email, start + 1); } string name2 = idn.GetUnicode(punyCode); Console.WriteLine("{0} --> {1} --> {2}", domain, punyCode, name2); } catch (ArgumentException) { Console.WriteLine("{0} is not a valid domain name.", domain); } Console.WriteLine(); } } } // The example displays the following output: // bücher.com --> xn--bcher-kva.com --> bücher.com // // hotmail.com --> hotmail.com --> hotmail.com // // мойдомен.рф --> xn--d1acklchcc.xn--p1ai --> мойдомен.рф
Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
