MailMessage 构造函数
定义
重要
一些信息与预发行产品相关,相应产品在发行之前可能会进行重大修改。 对于此处提供的信息,Microsoft 不作任何明示或暗示的担保。
初始化 MailMessage 类的新实例。
重载
MailMessage() |
初始化 MailMessage 类的空实例。 |
MailMessage(MailAddress, MailAddress) |
使用指定的 MailAddress 类对象初始化 MailMessage 类的新实例。 |
MailMessage(String, String) |
使用指定的 String 类对象初始化 MailMessage 类的新实例。 |
MailMessage(String, String, String, String) |
初始化 MailMessage 类的新实例。 |
MailMessage()
- Source:
- MailMessage.cs
- Source:
- MailMessage.cs
- Source:
- MailMessage.cs
初始化 MailMessage 类的空实例。
public:
MailMessage();
public MailMessage ();
Public Sub New ()
注解
From 设置为 mailSettings<smtp> 元素的网络元素 (网络设置) 中的值(如果存在)。
适用于
MailMessage(MailAddress, MailAddress)
- Source:
- MailMessage.cs
- Source:
- MailMessage.cs
- Source:
- MailMessage.cs
使用指定的 MailAddress 类对象初始化 MailMessage 类的新实例。
public:
MailMessage(System::Net::Mail::MailAddress ^ from, System::Net::Mail::MailAddress ^ to);
public MailMessage (System.Net.Mail.MailAddress from, System.Net.Mail.MailAddress to);
new System.Net.Mail.MailMessage : System.Net.Mail.MailAddress * System.Net.Mail.MailAddress -> System.Net.Mail.MailMessage
Public Sub New (from As MailAddress, to As MailAddress)
参数
- from
- MailAddress
MailAddress,其中包含电子邮件发件人的地址。
- to
- MailAddress
MailAddress,其中包含电子邮件收件人的地址。
例外
from
或 to
的格式不正确。
示例
下面的代码示例演示如何调用此构造函数。
static void CreateTestMessage3()
{
MailAddress^ to = gcnew MailAddress( L"jane@contoso.com" );
MailAddress^ from = gcnew MailAddress( L"ben@contoso.com" );
MailMessage^ message = gcnew MailMessage( from,to );
message->Subject = L"Using the new SMTP client.";
message->Body = L"Using this new feature, you can send an email message from an application very easily.";
// Use the application or machine configuration to get the
// host, port, and credentials.
SmtpClient^ client = gcnew SmtpClient;
Console::WriteLine( L"Sending an email message to {0} at {1} by using the SMTP host {2}.", to->User, to->Host, client->Host );
client->Send( message );
}
public static void CreateTestMessage3()
{
MailAddress to = new MailAddress("jane@contoso.com");
MailAddress from = new MailAddress("ben@contoso.com");
MailMessage message = new MailMessage(from, to);
message.Subject = "Using the new SMTP client.";
message.Body = @"Using this new feature, you can send an email message from an application very easily.";
// Use the application or machine configuration to get the
// host, port, and credentials.
SmtpClient client = new SmtpClient();
Console.WriteLine("Sending an email message to {0} at {1} by using the SMTP host={2}.",
to.User, to.Host, client.Host);
client.Send(message);
}
Public Shared Sub CreateTestMessage3()
Dim [to] As MailAddress = New MailAddress("jane@contoso.com")
Dim from As MailAddress = New MailAddress("ben@contoso.com")
Dim message As MailMessage = New MailMessage(from, [to])
message.Subject = "Using the new SMTP client."
message.Body = "Using this new feature, you can send an email message from an application very easily."
'Use the application or machine configuration to get the
' host, port, And credentials.
Dim client As SmtpClient = New SmtpClient()
Console.WriteLine("Sending an email message to {0} at {1} by using the SMTP host={2}.", [to].User, [to].Host, client.Host)
client.Send(message)
End Sub
注解
使用 From 初始化 from
属性, To 并使用 初始化 to
属性。
适用于
MailMessage(String, String)
- Source:
- MailMessage.cs
- Source:
- MailMessage.cs
- Source:
- MailMessage.cs
使用指定的 String 类对象初始化 MailMessage 类的新实例。
public:
MailMessage(System::String ^ from, System::String ^ to);
public MailMessage (string from, string to);
new System.Net.Mail.MailMessage : string * string -> System.Net.Mail.MailMessage
Public Sub New (from As String, to As String)
参数
例外
from
或 to
的格式不正确。
示例
下面的代码示例演示如何调用此构造函数。
static void CreateTestMessage2( String^ server )
{
String^ to = L"jane@contoso.com";
String^ from = L"ben@contoso.com";
MailMessage^ message = gcnew MailMessage( from,to );
message->Subject = L"Using the new SMTP client.";
message->Body = L"Using this new feature, you can send an email message from an application very easily.";
SmtpClient^ client = gcnew SmtpClient( server );
// Credentials are necessary if the server requires the client
// to authenticate before it will send email on the client's behalf.
client->UseDefaultCredentials = true;
client->Send( message );
client->~SmtpClient();
}
public static void CreateTestMessage2(string server)
{
string to = "jane@contoso.com";
string from = "ben@contoso.com";
MailMessage message = new MailMessage(from, to);
message.Subject = "Using the new SMTP client.";
message.Body = @"Using this new feature, you can send an email message from an application very easily.";
SmtpClient client = new SmtpClient(server);
// Credentials are necessary if the server requires the client
// to authenticate before it will send email on the client's behalf.
client.UseDefaultCredentials = true;
try
{
client.Send(message);
}
catch (Exception ex)
{
Console.WriteLine("Exception caught in CreateTestMessage2(): {0}",
ex.ToString());
}
}
Public Shared Sub CreateTestMessage2(ByVal server As String)
Dim [to] As String = "jane@contoso.com"
Dim from As String = "ben@contoso.com"
Dim message As MailMessage = New MailMessage(from, [to])
message.Subject = "Using the new SMTP client."
message.Body = "Using this new feature, you can send an email message from an application very easily."
Dim client As SmtpClient = New SmtpClient(server)
' Credentials are necessary if the server requires the client
' to authenticate before it will send email on the client's behalf.
client.UseDefaultCredentials = True
Try
client.Send(message)
Catch ex As Exception
Console.WriteLine("Exception caught in CreateTestMessage2(): {0}", ex.ToString())
End Try
End Sub
注解
使用 From 初始化 from
属性, To 并使用 初始化 to
属性。
适用于
MailMessage(String, String, String, String)
- Source:
- MailMessage.cs
- Source:
- MailMessage.cs
- Source:
- MailMessage.cs
初始化 MailMessage 类的新实例。
public:
MailMessage(System::String ^ from, System::String ^ to, System::String ^ subject, System::String ^ body);
public MailMessage (string from, string to, string? subject, string? body);
public MailMessage (string from, string to, string subject, string body);
new System.Net.Mail.MailMessage : string * string * string * string -> System.Net.Mail.MailMessage
Public Sub New (from As String, to As String, subject As String, body As String)
参数
例外
from
或 to
的格式不正确。
示例
下面的代码示例演示如何调用此构造函数。
static void CreateTimeoutTestMessage( String^ server )
{
String^ to = L"jane@contoso.com";
String^ from = L"ben@contoso.com";
String^ subject = L"Using the new SMTP client.";
String^ body = L"Using this new feature, you can send an email message from an application very easily.";
MailMessage^ message = gcnew MailMessage( from,to,subject,body );
SmtpClient^ client = gcnew SmtpClient( server );
Console::WriteLine( L"Changing time out from {0} to 100.", client->Timeout );
client->Timeout = 100;
// Credentials are necessary if the server requires the client
// to authenticate before it will send email on the client's behalf.
client->Credentials = CredentialCache::DefaultNetworkCredentials;
client->Send( message );
}
public static void CreateTimeoutTestMessage(string server)
{
string to = "jane@contoso.com";
string from = "ben@contoso.com";
string subject = "Using the new SMTP client.";
string body = @"Using this new feature, you can send an email message from an application very easily.";
MailMessage message = new MailMessage(from, to, subject, body);
SmtpClient client = new SmtpClient(server);
Console.WriteLine("Changing time out from {0} to 100.", client.Timeout);
client.Timeout = 100;
// Credentials are necessary if the server requires the client
// to authenticate before it will send email on the client's behalf.
client.Credentials = CredentialCache.DefaultNetworkCredentials;
client.Send(message);
}
Public Shared Sub CreateTimeoutTestMessage(ByVal server As String)
Dim [to] As String = "jane@contoso.com"
Dim from As String = "ben@contoso.com"
Dim subject As String = "Using the new SMTP client."
Dim body As String = "Using this new feature, you can send an email message from an application very easily."
Dim message As MailMessage = New MailMessage(from, [to], subject, body)
Dim client As SmtpClient = New SmtpClient(server)
Console.WriteLine("Changing time out from {0} to 100.", client.Timeout)
client.Timeout = 100
' Credentials are necessary if the server requires the client
' to authenticate before it will send email on the client's behalf.
client.Credentials = CredentialCache.DefaultNetworkCredentials
client.Send(message)
End Sub
注解
新 MailMessage 对象的属性初始化如下:
参数 | properties |
---|---|
from |
From |
to |
To |
subject |
Subject |
body |
Body |
默认情况下,假定主题和内容使用基于本地计算机设置的默认编码。 BodyEncoding使用 和 SubjectEncoding 属性指定不同的编码。