LoadFromXML méthode (String, IDTSEvents)

Syntaxe

'Déclaration
Public Sub LoadFromXML ( _
    packageXml As String, _
    events As IDTSEvents _
)
'Utilisation
Dim instance As Package
Dim packageXml As String
Dim events As IDTSEvents

instance.LoadFromXML(packageXml, events)

public void LoadFromXML(
    string packageXml,
    IDTSEvents events
)

public:
void LoadFromXML(
    String^ packageXml, 
    IDTSEvents^ events
)

member LoadFromXML : 
        packageXml:string * 
        events:IDTSEvents -> unit 

public function LoadFromXML(
    packageXml : String, 
    events : IDTSEvents
)

Notes

You should use the LoadFromXML method to load the XML that is in memory. If you want to load a package that has been saved to the hard drive as XML, use the Application..::..LoadPackage method. If the package has been saved to the File System or MSDB database, use the Application..::..LoadFromSqlServer or Application..::..LoadFromDtsServer methods.

When you call any of the loading methods on the Application, the runtime will iterate through the tasks, connection managers, log providers, and all other objects that are contained by the package and call the LoadFromXML method on each of them. The contained objects have code in their LoadFromXML that parses the XmlElement for each property that the object must recreate, and the value saved for the element. Therefore, you do not directly call the LoadFromXML on the individual objects, but call the method on the Application object, and the runtime will cascade through the package and call the LoadFromXML on the objects for you.

Exemples

The following code example creates a package and adds two tasks to it. The package XML is saved to an XmlDocument in memory. A second package is created, and because it is loaded with the same XmlDocument, it is now a duplicate of the first package.

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

namespace Microsoft.SqlServer.SSIS.Samples
{
    class Program
    {
        static void Main(string[] args)
        {
            Application app = new Application();

            // Location and file name can be combined into one string, 
            // or location could be set by a variable instead of 
            // hard-coded.
            String XmlLocation = @"C:\XML";
            String XmlFileName = "TestXML.xml";
            String XmlFile = XmlLocation + XmlFileName;
            Package pkg = new Package();
            pkg.CreatorName = "Test";
            pkg.Name = "SaveToXML Package";
            pkg.CheckSignatureOnLoad = true;
            pkg.DelayValidation = false;
            pkg.SaveCheckpoints = false;

            // Create package XmlDocument and use in pkg.SaveToXml.
            XmlDocument myPkgDocument = new XmlDocument();
            pkg.SaveToXML(ref myPkgDocument, null, null);
            // If you want to see what the package XML contains 
            // at this point, uncomment this line and view the console.
            // Console.Out.WriteLine(myPkgDocument.OuterXml);

            // Now modify the package. Create a task 
            // and set some properties.
            Executable execBI = pkg.Executables.Add("STOCK:BulkInsertTask");
            TaskHost th = execBI as TaskHost;
            th.Properties["DebugMode"].SetValue(th, false);

            // Save the task into the package using pkg.SaveToXML.
            // This saves the package after it has been modified
            // by the addition of the task.
            pkg.SaveToXML(ref myPkgDocument, null, null);

            // When you want to save the package to the hard-drive,
            // Save using the Application.SaveToXML method.
            //app.SaveToXml(XmlFile, pkg, null);

            // Reload the package from its XML.
            Package pkg2 = new Package();
            pkg2.LoadFromXML(myPkgDocument, null);
            Console.WriteLine("This is the package XML that pkg2 now contains:");
            Console.Out.WriteLine(myPkgDocument.OuterXml);
        }
    }
}

Imports System
Imports System.Collections.Generic
Imports System.Text  
Imports Microsoft.SqlServer.Dts.Runtime
Imports Microsoft.SqlServer.Dts.Tasks.BulkInsertTask
Imports System.Xml
 
Namespace Microsoft.SqlServer.SSIS.Samples
    Class Program
        Shared  Sub Main(ByVal args() As String)
            Dim app As Application =  New Application() 
 
            ' Location and file name can be combined into one string, 
            ' or location could be set by a variable instead of 
            ' hard-coded.
            Dim XmlLocation As String =  "C:\XML" 
            Dim XmlFileName As String =  "TestXML.xml" 
            Dim XmlFile As String =  XmlLocation + XmlFileName 
            Dim pkg As Package =  New Package() 
            pkg.CreatorName = "Test"
            pkg.Name = "SaveToXML Package"
            pkg.CheckSignatureOnLoad = True
            pkg.DelayValidation = False
            pkg.SaveCheckpoints = False
 
            ' Create package XmlDocument and use in pkg.SaveToXml.
            Dim myPkgDocument As XmlDocument =  New XmlDocument() 
            pkg.SaveToXML( myPkgDocument,Nothing,Nothing)
            ' If you want to see what the package XML contains 
            ' at this point, uncomment this line and view the console.
            ' Console.Out.WriteLine(myPkgDocument.OuterXml);
 
            ' Now modify the package. Create a task 
            ' and set some properties.
            Dim execBI As Executable =  pkg.Executables.Add("STOCK:BulkInsertTask") 
            Dim th As TaskHost =  execBI as TaskHost 
            th.Properties("DebugMode").SetValue(th, False)
 
            ' Save the task into the package using pkg.SaveToXML.
            ' This saves the package after it has been modified
            ' by the addition of the task.
            pkg.SaveToXML( myPkgDocument,Nothing,Nothing)
 
            ' When you want to save the package to the hard-drive,
            ' Save using the Application.SaveToXML method.
            'app.SaveToXml(XmlFile, pkg, null);
 
            ' Reload the package from its XML.
            Dim pkg2 As Package =  New Package() 
            pkg2.LoadFromXML(myPkgDocument, Nothing)
            Console.WriteLine("This is the package XML that pkg2 now contains:")
            Console.Out.WriteLine(myPkgDocument.OuterXml)
        End Sub
    End Class
End Namespace

Voir aussi

Référence