Task.ExecutionValue Property

Статья
12/15/2008

Returns a user-defined object. This field is read-only.

Пространство имен: Microsoft.SqlServer.Dts.Runtime
Сборка: Microsoft.SqlServer.ManagedDTS (in microsoft.sqlserver.manageddts.dll)

Синтаксис

'Декларация
Public Overridable ReadOnly Property ExecutionValue As Object

public virtual Object ExecutionValue { get; }

public:
virtual property Object^ ExecutionValue {
    Object^ get ();
}

/** @property */
public Object get_ExecutionValue ()

public function get ExecutionValue () : Object

Значение свойства

A user-defined object.

Замечания

The ExecutionValue property of the Task class is a read-only object property that gives the task the ability to expose information regarding the results of its execution, post messages, or return the DTSExecResult return value. For example, if a task deletes rows from a table as part of its Execute method, it might return the number of rows deleted as the ExecutionValue. Clients of the task could then use this value to establish precedence constraints between tasks.

Tasks override the base implementation of the ExecutionValue property and a value that is set by the task during its Execute method.

Пример

The following code example creates the Send Mail task, which inherits from Task, and then displays the properties the task has inherited.

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

namespace Microsoft.SqlServer.SSIS.Samples
{
    class Program
    {
        static void Main(string[] args)
        {
            Application app = new Application();
            Package pkg = new Package();
            // Add a Send Mail task to the package.
            Executable exec = pkg.Executables.Add("STOCK:SendMailTask");

            // Cast the task to its own class.
            TaskHost th = exec as TaskHost;
            SendMailTask smTask = th.InnerObject as SendMailTask;

            // Display the properties inherited from Task.
            Console.WriteLine("ExecutionValue: {0}", smTask.ExecutionValue);
            Console.WriteLine("Version: {0}", smTask.Version);
            Console.WriteLine("WaitForMe: {0}", smTask.WaitForMe);
        }
    }
}

Imports System
Imports System.Collections.Generic
Imports System.Text
Imports Microsoft.SqlServer.Dts.Runtime
Imports Microsoft.SqlServer.Dts.Tasks.SendMailTask
 
Namespace Microsoft.SqlServer.SSIS.Samples
    Class Program
        Shared  Sub Main(ByVal args() As String)
            Dim app As Application =  New Application() 
            Dim pkg As Package =  New Package() 
            ' Add a Send Mail task to the package.
            Dim exec As Executable =  pkg.Executables.Add("STOCK:SendMailTask") 
 
            ' Cast the task to its own class.
            Dim th As TaskHost =  exec as TaskHost 
            Dim smTask As SendMailTask =  th.InnerObject as SendMailTask 
 
            ' Display the properties inherited from Task.
            Console.WriteLine("ExecutionValue: {0}", smTask.ExecutionValue)
            Console.WriteLine("Version: {0}", smTask.Version)
            Console.WriteLine("WaitForMe: {0}", smTask.WaitForMe)
        End Sub
    End Class
End Namespace

Sample Output:

ExecutionValue:

Version: 0

WaitForMe: True

Синхронизация потоков

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.

Платформы

Платформы разработки

Список поддерживаемых платформ см. в разделе Hardware and Software Requirements for Installing SQL Server 2005.

Целевые платформы