Task.ExecutionValue 属性

定义

命名空间:: Microsoft.SqlServer.Dts.Runtime

程序集:: Microsoft.SqlServer.ManagedDTS.dll

重要

一些信息与预发行产品相关，相应产品在发行之前可能会进行重大修改。对于此处提供的信息，Microsoft 不作任何明示或暗示的担保。

返回一个用户定义的对象。此字段是只读的。

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

public virtual object ExecutionValue { get; }

member this.ExecutionValue : obj

Public Overridable ReadOnly Property ExecutionValue As Object

属性值

Object

用户定义的对象。

示例

以下代码示例创建了发送邮件任务，继承自 Task，并显示该任务继承的属性。

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

示例输出：

执行值：

版本：0

WaitForMe：确实如此

注解

ExecutionValue该Task类的属性是一个只读对象属性，使任务能够暴露其执行结果、发布消息或返回DTSExecResult返回值的信息。例如，如果任务在其方法中Execute删除了表中的行，它可能会返回被删除的行数。ExecutionValue 任务的客户端随后可以使用该值来建立任务之间的优先级约束。

任务覆盖了属性的基础实现 ExecutionValue 以及任务在方法 Execute 中设定的值。

适用于