Метод ExtendedProperties.Contains

Статья
04/26/2013

Returns a Boolean that indicates whether the items in the collection can be accessed 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 ExtendedProperties 
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
The name, identity, ID, or index to locate in the collection.

Возвращаемое значение

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

Примеры

The following code sample uses Contains method to determine if an extended property with the GUID given is in the collection. The method returns a Boolean.

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

namespace ExtendedProperties_Testing
{
    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);

            // Get the extended properties collection from the package.
            ExtendedProperties myExtProps = pkg.ExtendedProperties;

            // Use the ID.
            Boolean hasGUID = myExtProps.Contains("{F3B7314E-DB1E-4CCA-A856-2E617A1B3265}");
            Console.WriteLine("The extended property contains that GUID? {0}", hasGUID);
            Console.WriteLine();
        }
    }
}

Imports System
Imports System.Collections.Generic
Imports System.Text
Imports Microsoft.SqlServer.Dts.Runtime
 
Namespace ExtendedProperties_Testing
    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) 
 
            ' Get the extended properties collection from the package.
            Dim myExtProps As ExtendedProperties =  pkg.ExtendedProperties 
 
            ' Use the ID.
            Dim hasGUID As Boolean =  myExtProps.Contains("{F3B7314E-DB1E-4CCA-A856-2E617A1B3265}") 
            Console.WriteLine("The extended property contains that GUID? {0}", hasGUID)
            Console.WriteLine()
        End Sub
    End Class
End Namespace

Sample Output:

The extended property contains that GUID? True

См. также

Справочник

ExtendedProperties Класс

Пространство имен Microsoft.SqlServer.Dts.Runtime

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