ExtendedProperties.GetEnumerator 方法

定义

命名空间:

Microsoft.SqlServer.Dts.Runtime

程序集:

Microsoft.SqlServer.ManagedDTS.dll

返回用于遍历 ExtendedPropertyEnumerator 集合的 ExtendedProperties。

public:
 Microsoft::SqlServer::Dts::Runtime::ExtendedPropertyEnumerator ^ GetEnumerator();

public Microsoft.SqlServer.Dts.Runtime.ExtendedPropertyEnumerator GetEnumerator ();

override this.GetEnumerator : unit -> Microsoft.SqlServer.Dts.Runtime.ExtendedPropertyEnumerator

Public Function GetEnumerator () As ExtendedPropertyEnumerator

返回

ExtendedPropertyEnumerator

遍历集合的 ExtendedPropertyEnumerator 枚举器。

示例

下面的代码示例使用GetEnumerator该方法创建一个ExtendedPropertyEnumerator，然后循环访问集合。

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;  
            //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\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   
            '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  

示例输出：

集合包含以下值：

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

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

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

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

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

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

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

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

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

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

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

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

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

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

重置后枚举器中的第一项：

{F3B7314E-DB1E-4CCA-A856-2E617A1B3265}， 字符串