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MailMessage Constructor (String, String)

Initializes a new instance of the MailMessage class by using the specified String class objects.

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

Public Sub New ( _
	from As String, _
	to As String _


Type: System.String
A String that contains the address of the sender of the e-mail message.
Type: System.String
A String that contains the addresses of the recipients of the e-mail message.


from is Nothing.


to is Nothing.


from is Empty ("").


to is Empty ("").


from or to is malformed.

The From property is initialized using from and the To property is initialized using to.

The following code example demonstrates calling this constructor.

Public Shared Sub CreateTestMessage2(ByVal server As String)
    Dim [to] As String = ""
    Dim [from] As String = ""
    Dim message As New MailMessage([from], [to])
    message.Subject = "Using the new SMTP client."
    message.Body = "Using this new feature, you can send an e-mail message from an application very easily."
    Dim client As New SmtpClient(server)
    ' Credentials are necessary if the server requires the client 
    ' to authenticate before it will send e-mail on the client's behalf.
    client.UseDefaultCredentials = True

    Catch ex As Exception
        Console.WriteLine("Exception caught in CreateTestMessage2(): {0}", ex.ToString())
    End Try
End Sub

.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.