Поделиться через

  • Статья

Метод Contains

Specifies whether an item can be retrieved from the LogProviders collection using indexing without throwing an exception.

Пространство имен:  Microsoft.SqlServer.Dts.Runtime
Сборка:  Microsoft.SqlServer.ManagedDTS (в Microsoft.SqlServer.ManagedDTS.dll)

Синтаксис

'Декларация
Public Function Contains ( _
    index As Object _
) As Boolean
'Применение
Dim instance As LogProviders
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

Параметры

  • index
    Тип System. . :: . .Object
    An object that contains the numeric index or identity of the object in the collection.

Возвращаемое значение

Тип System. . :: . .Boolean
A Boolean that indicates whether items can be retrieved using indexing. A value of true indicates that the syntax LogProviders[x] can be used without throwing an exception. A value of false indicates that indexing cannot be used to retrieve items from the LogProviders collection.

Замечания

If a log provider is added using the Add method, the Name of the log provider defaults to a GUID.

Примеры

The following code sample uses 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 LogProviders_Tests
{
    class Program
    {
        static void Main(string[] args)
        {
            // The package is one of the SSIS Samples.
            string mySample = @"C:\Program Files\Microsoft SQL Server\100\Samples\Integration Services\Package Samples\CalculatedColumns Sample\CalculatedColumns\CalculatedColumns.dtsx";
            
            // Create the Application, and load the sample.
            Application app = new Application();
            Package pkg = app.LoadPackage(mySample, null);
            LogProviders logProvs = pkg.LogProviders;

            // Search for the "SSIS log provider for Text files"
            // in the collection
            if (logProvs.Contains("SSIS log provider for Text files"))
                Console.WriteLine("The collection contains {0} provider", logProvs[0].CreationName);
            else
                Console.WriteLine("The collection does not contain the SSIS log provider for Text files");
        }
    }
}

Imports System
Imports System.Collections.Generic
Imports System.Text
Imports Microsoft.SqlServer.Dts.Runtime
 
Namespace LogProviders_Tests
    Class Program
        Shared  Sub Main(ByVal args() As String)
            ' The package is one of the SSIS Samples.
            Dim mySample As String =  "C:\Program Files\Microsoft SQL Server\100\Samples\Integration Services\Package Samples\CalculatedColumns Sample\CalculatedColumns\CalculatedColumns.dtsx" 
 
            ' Create the Application, and load the sample.
            Dim app As Application =  New Application() 
            Dim pkg As Package =  app.LoadPackage(mySample,Nothing) 
            Dim logProvs As LogProviders =  pkg.LogProviders 
 
            ' Search for the "SSIS log provider for Text files"
            ' in the collection
            If logProvs.Contains("SSIS log provider for Text files") Then
                Console.WriteLine("The collection contains {0} provider", logProvs(0).CreationName)
            Else 
                Console.WriteLine("The collection does not contain the SSIS log provider for Text files")
            End If
         End Sub
    End Class
End Namespace

Sample Output:

The collection contains DTS.LogProviderTextFile.2 provider