SMODataFileEnumerator.Reset 메서드
Sets the enumerator to its initial position, which is before the first element in the collection.
네임스페이스: Microsoft.SqlServer.Dts.Runtime.Enumerators.SMO
어셈블리: Microsoft.SqlServer.ForEachSMOEnumerator(Microsoft.SqlServer.ForEachSMOEnumerator.dll)
구문
‘선언
Public Sub Reset
‘사용 방법
Dim instance As SMODataFileEnumerator
instance.Reset()
public void Reset()
public:
virtual void Reset() sealed
abstract Reset : unit -> unit
override Reset : unit -> unit
public final function Reset()
구현
주의
An enumerator remains valid as long as the collection remains unchanged. If changes are made to the collection, such as adding, modifying, or deleting elements, the enumerator is irrecoverably invalidated and the next call to MoveNext or Reset causes an exception.
예
The following code example creates a ForEachLoop, creates a SMO enumerator and hosts it in a ForEachEnumeratorHost, where it is then added as the ForEachEnumerator in the ForEachLoop. Returning a ForEachSMOEnumerator, a SMODataFileEnumerator is created as a System.Collections.IEnumerator and iterated over using MoveNext and Current. After the index has passed the end of the collection, the Reset is used to reset the iterator.
using System;
using System.Collections.Generic;
using System.Text;
using Microsoft.SqlServer.Dts.Runtime;
using Microsoft.SqlServer.Dts.Runtime.Enumerators.SMO;
namespace SmoDataFileEnumerator
{
class Program
{
const string PACKAGEFILENAME = @"\SmoDataFileEnumeratorPackage.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.DTSDesigner;
package.Name = "SMODataFileEnumerator Sample";
package.Description = "This is a sample for SMODataFileEnumerator";
// Use System.Environment.MachineName; in the following line of code.
package.CreatorComputerName = @"MACHINENAME";
// Use System.Environment.UserName; in the following line of code.
package.CreatorName = @"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";
Console.WriteLine("ForEachLoop creation name: {0}", forEachLoop.CreationName);
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='DataFiles']"
+ @"/SMOEnumType[@Name='Locations']";
System.Collections.IEnumerator smoDataFileEnumerator = forEachSMOEnumerator.GetEnumerator(
connections, null, null, null) as System.Collections.IEnumerator;
Console.WriteLine("The collection contains the following values:");
int i = 0;
while ((smoDataFileEnumerator.MoveNext()) && (smoDataFileEnumerator.Current != null))
Console.WriteLine("[{0}] {1}", i++, smoDataFileEnumerator.Current);
smoDataFileEnumerator.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 SmoDataFileEnumerator
Class Program
const String PACKAGEFILENAME = "\SmoDataFileEnumeratorPackage.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.DTSDesigner
package.Name = "SMODataFileEnumerator Sample"
package.Description = "This is a sample for SMODataFileEnumerator"
' Use System.Environment.MachineName; in the following line of code.
package.CreatorComputerName = "MACHINENAME"
' Use System.Environment.UserName; in the following line of code.
package.CreatorName = "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"
Console.WriteLine("ForEachLoop creation name: {0}", forEachLoop.CreationName)
ForEachEnumeratorInfo forEachEnumeratorInfo
Dim As =
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='DataFiles']"
Dim "/SMOEnumType[@Name='Locations']" As +
System.Collections.IEnumerator smoDataFileEnumerator = forEachSMOEnumerator.GetEnumerator(
connections, Nothing, Nothing, Nothing) as System.Collections.IEnumerator
Console.WriteLine("The collection contains the following values:")
Dim i As Integer = 0
While (smoDataFileEnumerator.MoveNext()) &&(smoDataFileEnumerator.Current <> Nothing)
Console.WriteLine("[{0}] {1}",i = Console.WriteLine("[{0}] {1}",i + 1
End While
smoDataFileEnumerator.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