FtpClientConnection.ChunkSize Property

Articolo
12/15/2008

Gets or sets the value that indicates the minimum number of bytes to retrieve from or send to the server during a File Transfer Protocol (FTP) read/write operation.

Spazio dei nomi: Microsoft.SqlServer.Dts.Runtime
Assembly : Microsoft.SqlServer.ManagedDTS (in microsoft.sqlserver.manageddts.dll)

Sintassi

'Dichiarazione
Public Property ChunkSize As Integer

public int ChunkSize { get; set; }

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

/** @property */
public int get_ChunkSize ()

/** @property */
public void set_ChunkSize (int value)

public function get ChunkSize () : int

public function set ChunkSize (value : int)

Valore proprietà

An Integer that contains the minimum number of bytes to retrieve or send.

Osservazioni

Reading or writing in small chunks causes a less optimized round trip to the server because a full packet is not received or sent. The default value is 1 KB. The maximum value is 1000 KB (1 MB).

Esempio

The most common method of creating the FTP client connection is by using the ConnectionManager. The InnerObject contains the connection, and all properties of the specific connection contained by the ConnectionManager are accessible through the Properties collection. The following code example shows the creation of an FTP connection using the connection manager, and sets properties using the Properties collection.

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

Sample Output:

ChunkSize: 1

Retries: 5

ServerName:

ServerPort: 21

ServerUserName:

Timeout: 60

UsePassiveMode: False

Thread Safety

Any public static (Shared in Microsoft Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Piattaforme

Piattaforme di sviluppo

Per un elenco delle piattaforme supportate, vedere Requisiti hardware e software per l'Installazione di SQL Server 2005.

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