ExtendedProperties.GetEnumerator Method

Returns an ExtendedPropertyEnumerator for iterating over the ExtendedProperties collection.

命名空间: Microsoft.SqlServer.Dts.Runtime
程序集: Microsoft.SqlServer.ManagedDTS (in microsoft.sqlserver.manageddts.dll)

语法

声明
Public Function GetEnumerator As ExtendedPropertyEnumerator

public ExtendedPropertyEnumerator GetEnumerator ()

public:
ExtendedPropertyEnumerator^ GetEnumerator ()

public ExtendedPropertyEnumerator GetEnumerator ()

public function GetEnumerator () : ExtendedPropertyEnumerator

返回值

An ExtendedPropertyEnumerator.

示例

The following code sample creates an ExtendedPropertyEnumerator using the GetEnumerator method, and then iterates over the collection.

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\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);

            // Get the extended properties collection from the package.
            ExtendedProperties myExtProps = pkg.ExtendedProperties;
            //Create the enumerator.
            ExtendedPropertyEnumerator myEnumerator = myExtProps.GetEnumerator();
            
            Console.WriteLine("The collection contains the following values:");
            int i = 0;
            ExtendedProperty myExtProp;
            while ((myEnumerator.MoveNext()) && (myEnumerator.Current != null))
            {
                myExtProp = (ExtendedProperty)myEnumerator.Current;
                Console.WriteLine("[{0}] {1}, {2}", i++, myExtProp.ID, myExtProp.DataType);
                Console.WriteLine("------------------------------");
            }
            // Reset puts the index pointer before the beginning.
            // Do not retrieve from the collection until MoveNext is called.
            myEnumerator.Reset();
            myEnumerator.MoveNext();

            // Now that the enumerator has been reset, and moved to the
            // first item in the collection, show the first item.
            myExtProp = (ExtendedProperty)myEnumerator.Current;
            Console.WriteLine("The first item in the enumerator after Reset:");
            Console.WriteLine("{0}, {1}", myExtProp.ID, myExtProp.DataType);
            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\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) 
 
            ' Get the extended properties collection from the package.
            Dim myExtProps As ExtendedProperties =  pkg.ExtendedProperties 
            'Create the enumerator.
            Dim myEnumerator As ExtendedPropertyEnumerator =  myExtProps.GetEnumerator() 
 
            Console.WriteLine("The collection contains the following values:")
            Dim i As Integer =  0 
            Dim myExtProp As ExtendedProperty
            While (myEnumerator.MoveNext()) &&(myEnumerator.Current <> Nothing)
                myExtProp = CType(myEnumerator.Current, ExtendedProperty)
                Console.WriteLine("[{0}] {1}, {2}",i = Console.WriteLine("[{0}] {1}, {2}",i + 1
                Console.WriteLine("------------------------------")
            End While
            ' Reset puts the index pointer before the beginning.
            ' Do not retrieve from the collection until MoveNext is called.
            myEnumerator.Reset()
            myEnumerator.MoveNext()
 
            ' Now that the enumerator has been reset, and moved to the
            ' first item in the collection, show the first item.
            myExtProp = CType(myEnumerator.Current, ExtendedProperty)
            Console.WriteLine("The first item in the enumerator after Reset:")
            Console.WriteLine("{0}, {1}", myExtProp.ID, myExtProp.DataType)
            Console.WriteLine()
        End Sub
    End Class
End Namespace

Sample Output:

The collection contains the following values:

[0] {F3B7314E-DB1E-4CCA-A856-2E617A1B3265}, String

------------------------------

[1] {AA947F2D-C3B3-420F-B39E-4B7C77DAAFC0}, String

------------------------------

[2] {AB2CCC33-3090-4C36-B444-5B50BB481324}, String

------------------------------

[3] {FE85601C-4ECC-41D4-BEAA-1318DDF7EE2A}, String

------------------------------

[4] {4D1641B9-94EF-4144-9820-1B30ABD2214F}, String

------------------------------

[5] {4E76A01C-BFF8-462D-AAB0-FB48B3EEAE00}, String

------------------------------

[6] {A56842E2-11C1-487E-B670-33F25B534146}, String

------------------------------

The first item in the enumerator after Reset:

{F3B7314E-DB1E-4CCA-A856-2E617A1B3265}, String

线程安全

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.

平台

开发平台

有关支持的平台列表，请参阅安装 SQL Server 2005 的硬件和软件要求。

目标平台

有关支持的平台列表，请参阅安装 SQL Server 2005 的硬件和软件要求。

请参阅

参考

ExtendedProperties Class
ExtendedProperties Members
Microsoft.SqlServer.Dts.Runtime Namespace