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MailAddress Constructor (String, String, Encoding)

Initializes a new instance of the MailAddress class using the specified address, display name, and encoding.

Namespace:  System.Net.Mail
Assembly:  System (in System.dll)

public MailAddress(
	string address,
	string displayName,
	Encoding displayNameEncoding


Type: System.String
A String that contains an e-mail address.
Type: System.String
A String that contains the display name associated with address.
Type: System.Text.Encoding
The Encoding that defines the character set used for displayName.


address is null.


displayName is null.


address is String.Empty ("").


displayName is String.Empty ("").


address is not in a recognized format.


address contains non-ASCII characters.

Leading and trailing white space in the display name is preserved.

If address contains a display name, and displayName is not null and is not equal to String.Empty, displayName overrides the value specified in address.

The MailAddress method does not check if the displayName parameter is valid. This method removes surrounding quotes not displayed by the DisplayName property. Quotes will be added before transmission, except where ASCII or Unicode is specified in the displayNameEncoding parameter. The encoding specified in the displayNameEncoding parameter will be applied to the DisplayName property before transmission ASCII or Unicode is specified in the displayNameEncoding parameter. UTF8 is the default encoding if none is specified.

For more information on supported mail address formats, see MailAddress.

The following code example uses this constructor to create MailAddress instances for the sender of an e-mail message.

// Create a mailing address that includes a UTF8 character
// in the display name.
MailAddress from = new MailAddress("", 
   "Jane " + (char)0xD8+ " Clayton", 

.NET Framework

Supported in: 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.