LogProviders.Contains Method

Artikkeli
12/03/2008

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

Namespace: Microsoft.SqlServer.Dts.Runtime
Assembly: Microsoft.SqlServer.ManagedDTS (in microsoft.sqlserver.manageddts.dll)

Syntax

'Declaration
Public Function Contains ( _
    index As Object _
) As Boolean

public bool Contains (
    Object index
)

public:
bool Contains (
    Object^ index
)

public boolean Contains (
    Object index
)

public function Contains (
    index : Object
) : boolean

Parameters

index
An object that contains the numeric index or identity of the object in the collection.

Return Value

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.

Remarks

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

Example

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\90\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\90\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.1 provider

Thread Safety

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.

Platforms

Development Platforms

For a list of the supported platforms, see Hardware and Software Requirements for Installing SQL Server 2005.

Target Platforms