PackageInfoEnumerator.Current Properti

Definisi

Ruang nama:

Microsoft.SqlServer.Dts.Runtime

Rakitan:

Microsoft.SqlServer.ManagedDTS.dll

Mengembalikan elemen saat ini PackageInfo dari koleksi.

public:
 property Microsoft::SqlServer::Dts::Runtime::PackageInfo ^ Current { Microsoft::SqlServer::Dts::Runtime::PackageInfo ^ get(); };

public Microsoft.SqlServer.Dts.Runtime.PackageInfo Current { get; }

member this.Current : Microsoft.SqlServer.Dts.Runtime.PackageInfo

Public ReadOnly Property Current As PackageInfo

Nilai Properti

PackageInfo

Objek PackageInfo.

Contoh

Contoh kode berikut memuat dua paket dari folder Sampel, dan menyimpannya ke Layanan DTS. Kemudian membuat enumerator dan menggunakan MoveNext dan Current metode untuk melakukan iterasi melalui paket dan mencetak namanya.

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

namespace PackageInfoTest  
{  
    class Program  
    {  
        static void Main(string[] args)  
        {  
            string pkg = @"C:\Program Files\Microsoft SQL Server\100\Samples\Integration Services\Package Samples\ExecuteProcess Sample\ExecuteProcess\UsingExecuteProcess.dtsx";  
            string pkg2 = @"C:\Program Files\Microsoft SQL Server\100\Samples\Integration Services\Package Samples\CalculatedColumns Sample\CalculatedColumns\CalculatedColumns.dtsx";  

            Application app = new Application();  
            Package p1 = app.LoadPackage(pkg, null);  
            Package p2 = app.LoadPackage(pkg2, null);  
            p1.Description = "UsingExecuteProcess package";  
            p2.Description = "Calculated Columns package";  

            app.SaveToDtsServer(p1, null, @"File System\myp1Package", "YOURSERVER");  
            app.SaveToDtsServer(p2, null, @"File System\myp2Package", "YOURSERVER");  

            PackageInfos pInfos = app.GetDtsServerPackageInfos(@"File System", "YOURSERVER");  
            Console.WriteLine("Number of Packages {0}", pInfos.Count.ToString());  

            PackageInfoEnumerator iEnum = pInfos.GetEnumerator();  

            while (iEnum.MoveNext())  
                {  
                    String pkgName = iEnum.Current.Name;  
                    Console.WriteLine(pkgName);   
                }  
         }  
    }  
}  

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

Namespace PackageInfoTest  
    Class Program  
        Shared  Sub Main(ByVal args() As String)  
            Dim pkg As String =  "C:\Program Files\Microsoft SQL Server\100\Samples\Integration Services\Package Samples\ExecuteProcess Sample\ExecuteProcess\UsingExecuteProcess.dtsx"   
            Dim pkg2 As String =  "C:\Program Files\Microsoft SQL Server\100\Samples\Integration Services\Package Samples\CalculatedColumns Sample\CalculatedColumns\CalculatedColumns.dtsx"   

            Dim app As Application =  New Application()   
            Dim p1 As Package =  app.LoadPackage(pkg,Nothing)   
            Dim p2 As Package =  app.LoadPackage(pkg2,Nothing)   
            p1.Description = "UsingExecuteProcess package"  
            p2.Description = "Calculated Columns package"  

            app.SaveToDtsServer(p1, Nothing, "File System\myp1Package", "YOURSERVER")  
            app.SaveToDtsServer(p2, Nothing, "File System\myp2Package", "YOURSERVER")  

            Dim pInfos As PackageInfos =  app.GetDtsServerPackageInfos("File System","YOURSERVER")   
            Console.WriteLine("Number of Packages {0}", pInfos.Count.ToString())  

            Dim iEnum As PackageInfoEnumerator =  pInfos.GetEnumerator()   

            While iEnum.MoveNext()  
                    Dim pkgName As String =  iEnum.Current.Name   
                    Console.WriteLine(pkgName)  
            End While  
        End Sub  
    End Class  
End Namespace  

Contoh Output:

Jumlah Paket 2

myp1Package

myp2Package

Keterangan

Setelah enumerator dibuat, atau setelah panggilan ke Reset metode , MoveNext metode harus dipanggil untuk memajukan enumerator ke elemen pertama koleksi sebelum enumerator dapat membaca nilai Current properti; jika tidak, Current tidak terdefinisi dan melempar pengecualian.

Current juga melemparkan pengecualian jika panggilan terakhir untuk MoveNext dikembalikan false, yang menunjukkan akhir koleksi.

Current tidak memindahkan posisi enumerator, dan panggilan berturut-turut untuk Current mengembalikan objek yang sama hingga atau MoveNextReset dipanggil.

Enumerator tetap valid selama koleksi tetap tidak berubah. Jika perubahan dilakukan pada koleksi, seperti menambahkan, memodifikasi, atau menghapus elemen, enumerator tidak valid dan menjadi tidak dapat dipulihkan; dengan demikian, panggilan berikutnya ke MoveNext atau Reset melempar InvalidOperationException. Namun, jika koleksi dimodifikasi antara panggilan ke MoveNext dan Current, Current mengembalikan elemen yang diatur ke, bahkan jika enumerator telah dibatalkan.