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Contains 方法

Returns a Boolean that indicates if the items in the collection can be accessed using indexing without throwing an exception.

命名空間：  Microsoft.SqlServer.Dts.Runtime
組件：  Microsoft.SqlServer.ManagedDTS (在 Microsoft.SqlServer.ManagedDTS.dll 中)

語法

'宣告
Public Function Contains ( _
    index As Object _
) As Boolean
'用途
Dim instance As LogProviderInfos
Dim index As Object
Dim returnValue As Boolean

returnValue = instance.Contains(index)

public bool Contains(
    Object index
)

public:
bool Contains(
    Object^ index
)

member Contains : 
        index:Object -> bool 

public function Contains(
    index : Object
) : boolean

參數

傳回值

型別：System. . :: . .Boolean
A Boolean that indicates whether the collection can be accessed by name, identity, ID, or index. A value of true indicates that the collection can be accessed by using the syntax LogProviderInfos[index]. A value of false indicates that indexing cannot be used to retrieve items from the LogProviderInfos collection; using this property throws an exception.

範例

The following code sample uses the Contains method to determine if a log provider with the name "SSIS log provider for Text files" is in the collection. The method returns a Boolean.

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

namespace LogProvInfoProperties
{
    class Program
    {
        static void Main(string[] args)
        {
        Application app = new Application();
        LogProviderInfos infos = app.LogProviderInfos;

        //See if the collection contains a log provider
        // with the name "SSIS log provider for Text files".
        Boolean logText = infos.Contains("SSIS log provider for Text files");
        Console.WriteLine("Contains Text log provider? {0}", logText);
        }
    }
}

Imports System
Imports System.Collections.Generic
Imports System.Text
Imports Microsoft.SqlServer.Dts.Runtime
 
Namespace LogProvInfoProperties
    Class Program
        Shared  Sub Main(ByVal args() As String)
        Dim app As Application =  New Application() 
        Dim infos As LogProviderInfos =  app.LogProviderInfos 
 
        'See if the collection contains a log provider
        ' with the name "SSIS log provider for Text files".
        Dim logText As Boolean =  infos.Contains("SSIS log provider for Text files") 
        Console.WriteLine("Contains Text log provider? {0}", logText)
        End Sub
    End Class
End Namespace

Sample Output:

Contains Text log provider? True