FtpClientConnection.ChunkSize 属性

定义

命名空间:

Microsoft.SqlServer.Dts.Runtime

程序集:

Microsoft.SqlServer.ManagedDTS.dll

获取或设置一个值，该值指示在文件传输协议 (FTP) 读/写操作期间要从服务器检索或向服务器发送的最小字节数。

public:
 property int ChunkSize { int get(); void set(int value); };

public int ChunkSize { get; set; }

member this.ChunkSize : int with get, set

Public Property ChunkSize As Integer

属性值

Int32

包含要检索或发送的最小字节数的整数。

示例

创建 FTP 客户端连接的最常见方法是使用 ConnectionManager. InnerObject包含该连接，以及该ConnectionManager连接包含的特定连接的所有属性均可通过Properties集合访问。 下面的代码示例演示如何使用连接管理器创建 FTP 连接，并使用集合设置属性 Properties 。

using System;  
using System.Collections.Generic;  
using System.Text;  
using Microsoft.SqlServer.Dts.Runtime;  
using Microsoft.SqlServer.Dts.Tasks.FileSystemTask;  

namespace Microsoft.SqlServer.SSIS.Samples  
{  
    class mySqlServer_Sample  
    {  
        static void Main(string[] args)  
        {  
            Package pkg = new Package();  
            FtpClientConnection ftp = null;  
            Connections conns = pkg.Connections;  
            ConnectionManager cm = conns.Add("FTP");  

            // Display the default values of the FTP connection properties.  
            // Some properties are not shown as they are write-only.  
            Console.WriteLine("ChunkSize:      {0}", cm.Properties["ChunkSize"].GetValue(cm));  
            Console.WriteLine("Retries:        {0}", cm.Properties["Retries"].GetValue(cm));  
            Console.WriteLine("ServerName:     {0}", cm.Properties["ServerName"].GetValue(cm));  
            Console.WriteLine("ServerPort:     {0}", cm.Properties["ServerPort"].GetValue(cm));  
            Console.WriteLine("ServerUserName: {0}", cm.Properties["ServerUserName"].GetValue(cm));  
            Console.WriteLine("Timeout:        {0}", cm.Properties["Timeout"].GetValue(cm));  
            Console.WriteLine("UsePassiveMode: {0}",cm.Properties["UsePassiveMode"].GetValue(cm));  

            Console.WriteLine();  
        }  
    }  
}  

Imports System  
Imports System.Collections.Generic  
Imports System.Text  
Imports Microsoft.SqlServer.Dts.Runtime  
Imports Microsoft.SqlServer.Dts.Tasks.FileSystemTask  

Namespace Microsoft.SqlServer.SSIS.Samples  
    Class mySqlServer_Sample  
        Shared  Sub Main(ByVal args() As String)  
            Dim pkg As Package =  New Package()   
            Dim ftp As FtpClientConnection =  Nothing   
            Dim conns As Connections =  pkg.Connections   
            Dim cm As ConnectionManager =  conns.Add("FTP")   

            ' Display the default values of the FTP connection properties.  
            ' Some properties are not shown as they are write-only.  
            Console.WriteLine("ChunkSize:      {0}", cm.Properties("ChunkSize").GetValue(cm))  
            Console.WriteLine("Retries:        {0}", cm.Properties("Retries").GetValue(cm))  
            Console.WriteLine("ServerName:     {0}", cm.Properties("ServerName").GetValue(cm))  
            Console.WriteLine("ServerPort:     {0}", cm.Properties("ServerPort").GetValue(cm))  
            Console.WriteLine("ServerUserName: {0}", cm.Properties("ServerUserName").GetValue(cm))  
            Console.WriteLine("Timeout:        {0}", cm.Properties("Timeout").GetValue(cm))  
            Console.WriteLine("UsePassiveMode: {0}",cm.Properties("UsePassiveMode").GetValue(cm))  

            Console.WriteLine()  
        End Sub  
    End Class  
End Namespace  

示例输出：

区块：1

重试次数：5

服务器名称：

ServerPort：21

ServerUserName：

超时：60

UsePassiveMode： False

注解

读取或写入小区块会导致对服务器进行不太优化的往返，因为未接收或发送完整数据包。 默认值为 1 KB。 最大值为 1000 KB (1 MB) 。