DtsEventHandlers.Contains(Object) 方法

參考

定義

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

組件:: Microsoft.SqlServer.ManagedDTS.dll

重要

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指出是否可以使用名稱、索引或識別碼當做索引來存取集合中的項目。

public:
 bool Contains(System::Object ^ index);

public bool Contains (object index);

member this.Contains : obj -> bool

Public Function Contains (index As Object) As Boolean

參數

index: Object

要在集合中尋找之物件的名稱、索引或識別碼。

傳回

Boolean

布林值，指出是否可以使用名稱、索引或識別碼來存取集合。值為 true 時，表示可以使用語法 DtsEventHandlers [index] 來存取集合。值為 false 時，表示無法使用索引來從集合中取出專案 DtsEventHandlers 。

範例

下列程式碼範例會抓取 DtsEventHandlers 集合，然後使用 Contains 來查看是否 [x] 可以在集合上使用專案語法。

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

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

            // Set up a DtsEventHandler for the OnError event of the package.  
            DtsEventHandler dtsEHOE = (DtsEventHandler)pkg.EventHandlers.Add("OnError");  
            DtsEventHandler dtsEHW = (DtsEventHandler)pkg.EventHandlers.Add("OnWarning");  

            // Create the DtsEventHandlers collection.  
            DtsEventHandlers dtsEHColls = pkg.EventHandlers;  

            // Use the Contains method to see if the item[x] syntax can be used.  
            Boolean dtsContains = dtsEHColls.Contains(0);  
            Console.WriteLine("Item syntax can be used?  {0}", dtsContains);  

            //Using the Item method syntax of [x], obtain the first entry and a name.  
            DtsEventHandler dtsEHFirstEntry = dtsEHColls[0];  
            String nameOfFirstItem = dtsEHColls[0].Name;  

            //Print the name of the log provider object located at position [0].  
            Console.WriteLine("The ID of the first event handler is: {0}", dtsEHFirstEntry.ID);  
            Console.WriteLine("The Name of the first event handler is: {0}", nameOfFirstItem);  
        }  
    }  
}

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

Namespace Microsoft.SqlServer.SSIS.Samples  
    Class Program  
        Shared  Sub Main(ByVal args() As String)  
            Dim pkg As Package =  New Package()   

            ' Set up a DtsEventHandler for the OnError event of the package.  
            Dim dtsEHOE As DtsEventHandler = CType(pkg.EventHandlers.Add("OnError"), DtsEventHandler)  
            Dim dtsEHW As DtsEventHandler = CType(pkg.EventHandlers.Add("OnWarning"), DtsEventHandler)  

            ' Create the DtsEventHandlers collection.  
            Dim dtsEHColls As DtsEventHandlers =  pkg.EventHandlers   

            ' Use the Contains method to see if the item[x] syntax can be used.  
            Dim dtsContains As Boolean =  dtsEHColls.Contains(0)   
            Console.WriteLine("Item syntax can be used?  {0}", dtsContains)  

            'Using the Item method syntax of [x], obtain the first entry and a name.  
            Dim dtsEHFirstEnTry As DtsEventHandler =  dtsEHColls(0)   
            Dim nameOfFirstItem As String =  dtsEHColls(0).Name   

            'Print the name of the log provider object located at position [0].  
            Console.WriteLine("The ID of the first event handler is: {0}", dtsEHFirstEnTry.ID)  
            Console.WriteLine("The Name of the first event handler is: {0}", nameOfFirstItem)  
        End Sub  
    End Class  
End Namespace

範例輸出：

可以使用專案語法嗎？ True

第一個事件處理常式的識別碼為： {4B9E438E-BA17-4A51-8235-3072AFF92F99}

第一個事件處理常式的名稱為： OnError

適用於

DtsEventHandlers.Contains(Object) 方法

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定義

參數

傳回

範例

適用於