SmtpClient.ServicePoint 属性

定义

获取用于传输电子邮件的网络连接。Gets the network connection used to transmit the email message.

public:
 property System::Net::ServicePoint ^ ServicePoint { System::Net::ServicePoint ^ get(); };
public System.Net.ServicePoint ServicePoint { get; }
member this.ServicePoint : System.Net.ServicePoint
Public ReadOnly Property ServicePoint As ServicePoint

属性值

连接到用于 SMTP 的 ServicePoint 属性的 HostA ServicePoint that connects to the Host property used for SMTP.

例外

Hostnull 或为空字符串 ("")。Host is null or the empty string ("").

-或--or- Port 为零。Port is zero.

示例

下面的代码示例演示如何访问 ServicePoint 属性。The following code example demonstrates accessing the ServicePoint property.

static void CreateTestMessage1( String^ server, int port )
{
   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,port );
   
   // 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;
   
   //Display the properties on the service point.
   ServicePoint^ p = client->ServicePoint;
   Console::WriteLine( L"Connection lease timeout: {0}", p->ConnectionLeaseTimeout );
   client->Send( message );
   client->~SmtpClient();
}


public static void CreateTestMessage1(string server, int port)
{
    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, port);
    // 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);
}

注解

ServicePoint 属性的设置是使用应用程序或计算机配置文件中指定的默认值和 ServicePointManager 类创建的。The settings for the ServicePoint property are created using defaults specified in the application or machine configuration files and the ServicePointManager class.

适用于

另请参阅