SMOEnumerator.MoveNext Methode

Definition

Namespace:

Microsoft.SqlServer.Dts.Runtime.Enumerators.SMO

Assembly:

Microsoft.SqlServer.ForEachSMOEnumerator.dll

Setzt den Enumerator auf das nächste Element der Auflistung.

public:
 virtual bool MoveNext();

public bool MoveNext ();

abstract member MoveNext : unit -> bool
override this.MoveNext : unit -> bool

Public Function MoveNext () As Boolean

Gibt zurück

Boolean

true, wenn der Aufzählungsator erfolgreich zum nächsten Element erweitert wurde; false, wenn der Aufzählungsator das Ende der Auflistung übergeben hat.

Implementiert

MoveNext()

Beispiele

Im folgenden Codebeispiel wird ein ForEachLoopSMO-Aufzählungsator erstellt und in einem ForEachEnumeratorHostHosten gehostet, in dem er dann als " ForEachEnumerator in" ForEachLoophinzugefügt wird. Gibt eine zurück, SMOEnumerator eine ForEachSMOEnumeratorwird als System.Collections.IEnumerator eine und über die Verwendung MoveNext und die CurrentIterierung erstellt. Nachdem die Auflistung das Ende übergeben hat, wird dies Reset verwendet, um den Iterator zurückzusetzen.

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

namespace SMOEnumerator  
{  
    class Program  
    {  
        const string PACKAGEFILENAME = @"\SamplePackage.dtsx";  

        static void Main(string[] args)  
        {  
            // Create the SSIS application  
            Application application = new Application();  

            // Create the new package  
            Package package = new Package();  
            package.PackageType = DTSPackageType.DTSDesigner100;  
            package.Name = "SMOEnumerator Sample";  
            package.Description = "This is a sample for SMOEnumerator";  
            package.CreatorComputerName = @"MACHINENAME"; // System.Environment.MachineName;  
            package.CreatorName = @"USERNAME"; //System.Environment.UserName;  

            // Adds the ADO.NET connection manager to the package  
            Connections connections = package.Connections;  
            ConnectionManager connectionManager = connections.Add("ADO.NET:SQL");  
            Console.WriteLine("ConnectionManager creation name: {0}", connectionManager.CreationName);  
            connectionManager.Name = @"localhost.AdventureWorks";  
            connectionManager.ConnectionString = @"Data Source=localhost;"  
                + "Initial Catalog=AdventureWorks;"  
                + "Integrated Security=True;";  

            // Create ForEach SMO Loop task  
            Executables executables = package.Executables;  
            ForEachLoop forEachLoop = executables.Add("STOCK:FOREACHLOOP") as ForEachLoop;  
            forEachLoop.Name = "Foreach Loop Container";  
            forEachLoop.Description = "Foreach Loop Container";  

            ForEachEnumeratorInfo forEachEnumeratorInfo = application.ForEachEnumeratorInfos["Foreach SMO Enumerator"];  
            ForEachEnumeratorHost forEachEnumeratorHost = forEachEnumeratorInfo.CreateNew();  
            forEachLoop.ForEachEnumerator = forEachEnumeratorHost;  

            // Setup the SMO enumerator  
            ForEachSMOEnumerator forEachSMOEnumerator = forEachEnumeratorHost.InnerObject as ForEachSMOEnumerator;  
            forEachSMOEnumerator.EnumURN = @"RuntimeServer[@Connection='"  
                + connectionManager.ID + @"']/Server[@Name='localhost']"  
                + @"/Database[@Name='AdventureWorks']"  
                + @"/SMOEnumObj[@Name='Tables']"  
                + @"/SMOEnumType[@Name='ObjectsPP']";  

            System.Collections.IEnumerator smoEnumerator = (System.Collections.IEnumerator)forEachSMOEnumerator.GetEnumerator(  
            connections, null, null, null);  
            Console.WriteLine("The collection contains the following values:");  
            int i = 0;  
            while ((smoEnumerator.MoveNext()) && (smoEnumerator.Current != null))  
                Console.WriteLine("[{0}] {1}", i++, smoEnumerator.Current);  

             smoEnumerator.Reset();  

            // Validate the layout of the package  
            DTSExecResult status = package.Validate(package.Connections, null, null, null);  
            Console.WriteLine("Validation result: " + status);  

            // Save the package  
            String currentDirectory = Environment.CurrentDirectory;  
            application.SaveToXml(currentDirectory + PACKAGEFILENAME, package, null);  
            Console.WriteLine(@"Package saved to " + currentDirectory + PACKAGEFILENAME);  
        }  
    }  
}  

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

Namespace SMOEnumerator  
    Class Program  
        const String PACKAGEFILENAME = "\SamplePackage.dtsx"  

        Shared  Sub Main(ByVal args() As String)  
            ' Create the SSIS application  
            Dim application As Application =  New Application()   

            ' Create the new package  
            Dim package As Package =  New Package()   
            package.PackageType = DTSPackageType.DTSDesigner100  
            package.Name = "SMOEnumerator Sample"  
            package.Description = "This is a sample for SMOEnumerator"  
            package.CreatorComputerName = "MACHINENAME" ' System.Environment.MachineName;  
            package.CreatorName = "USERNAME" 'System.Environment.UserName;  

            ' Adds the ADO.NET connection manager to the package  
            Dim connections As Connections =  package.Connections   
            Dim connectionManager As ConnectionManager =  connections.Add("ADO.NET:SQL")   
            Console.WriteLine("ConnectionManager creation name: {0}", connectionManager.CreationName)  
            connectionManager.Name = "localhost.AdventureWorks"  
            connectionManager.ConnectionString = "Data Source=localhost;"  
                + "Initial Catalog=AdventureWorks;"  
                Dim "Integrated Security=True;" As +  

            ' Create ForEach SMO Loop task  
            Dim executables As Executables =  package.Executables   
            Dim forEachLoop As ForEachLoop =  executables.Add("STOCK:FOREACHLOOP") as ForEachLoop   
            forEachLoop.Name = "Foreach Loop Container"  
            forEachLoop.Description = "Foreach Loop Container"  

            Dim forEachEnumeratorInfo As ForEachEnumeratorInfo =  application.ForEachEnumeratorInfos("Foreach SMO Enumerator")   
            Dim forEachEnumeratorHost As ForEachEnumeratorHost =  forEachEnumeratorInfo.CreateNew()   
            forEachLoop.ForEachEnumerator = forEachEnumeratorHost  

            ' Setup the SMO enumerator  
            Dim forEachSMOEnumerator As ForEachSMOEnumerator =  forEachEnumeratorHost.InnerObject as ForEachSMOEnumerator   
            forEachSMOEnumerator.EnumURN = "RuntimeServer[@Connection='"  
                + connectionManager.ID + "']/Server[@Name='localhost']"  
                + "/Database[@Name='AdventureWorks']"  
                + "/SMOEnumObj[@Name='Tables']"  
                Dim "/SMOEnumType[@Name='ObjectsPP']" As +  

            System.Collections.IEnumerator smoEnumerator = (System.Collections.IEnumerator)forEachSMOEnumerator.GetEnumerator(  
                connections, Nothing, Nothing, Nothing)  
            Console.WriteLine("The collection contains the following values:")  
            Dim i As Integer =  0   
            While (smoEnumerator.MoveNext()) &&(smoEnumerator.Current <> Nothing)  
            Console.WriteLine("[{0}] {1}",i = Console.WriteLine("[{0}] {1}",i + 1  
            End While  

             smoEnumerator.Reset()  

            ' Validate the layout of the package  
            Dim status As DTSExecResult =  package.Validate(package.Connections,Nothing,Nothing,Nothing)   
            Console.WriteLine("Validation result: " + status)  

            ' Save the package  
            Dim currentDirectory As String =  Environment.CurrentDirectory   
            application.SaveToXml(currentDirectory + PACKAGEFILENAME, package, Nothing)  
            Console.WriteLine("Package saved to " + currentDirectory + PACKAGEFILENAME)  
        End Sub  
    End Class  
End Namespace