ExtendedProperties.Item[Object] 屬性

public:
 property Microsoft::SqlServer::Dts::Runtime::ExtendedProperty ^ default[System::Object ^] { Microsoft::SqlServer::Dts::Runtime::ExtendedProperty ^ get(System::Object ^ index); };

public Microsoft.SqlServer.Dts.Runtime.ExtendedProperty this[object index] { get; }

member this.Item(obj) : Microsoft.SqlServer.Dts.Runtime.ExtendedProperty

Default Public ReadOnly Property Item(index As Object) As ExtendedProperty

參數

屬性值

收藏中的一件 ExtendedProperty 物品。

範例

以下程式碼範例使用兩種方法從集合中取得一個項目。 第一種方法是利用語 myExtProps[0] 法擷取集合中位於第一位置的整個物件並將其放入物件中 myExtProp 。 你現在可以像平常一樣從物件中取得所有屬性 myExtProp 。 第二種方法示範如何從集合中的第一個物件中取得特定屬性 DataType。

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;  

            //Using the Item method syntax of [x], obtain the  
            // entire first entry, and then just the name.  
            ExtendedProperty myExtProp = myExtProps[0];  
            String dataTypeOfFirstItem = myExtProps[0].DataType.ToString();  

            //Print the name of the extended property   
           //located at position [0].  
            Console.WriteLine("The ID of the first item is: {0}", myExtProp.ID);  
            Console.WriteLine("The DataType of the first item is: {0}", dataTypeOfFirstItem);  
            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   

            'Using the Item method syntax of [x], obtain the  
            ' entire first entry, and then just the name.  
            Dim myExtProp As ExtendedProperty =  myExtProps(0)   
            Dim dataTypeOfFirstItem As String =  myExtProps(0).DataType.ToString()   

            'Print the name of the extended property   
           'located at position [0].  
            Console.WriteLine("The ID of the first item is: {0}", myExtProp.ID)  
            Console.WriteLine("The DataType of the first item is: {0}", dataTypeOfFirstItem)  
            Console.WriteLine()  
        End Sub  
    End Class  
End Namespace  

範例輸出：

第一個項目的 ID 為：{F3B7314E-DB1E-4CCA-A856-2E617A1B3265}

第一個項目的資料型態為：String

備註

如果呼叫 Contains 方法回傳 true，你可以透過語法 ExtendedProperties[index]存取集合中指定的元素。 然而，如果方法 Contains 回傳 false，這個特性會拋出例外。 在 C# 中，這個屬性就是類別的 ExtendedProperties 索引器。