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Item 属性

Returns a DBProviderInfo object from the collection.

命名空间：  Microsoft.SqlServer.Dts.Runtime
程序集：  Microsoft.SqlServer.ManagedDTS（在 Microsoft.SqlServer.ManagedDTS.dll 中）

语法

声明
Public ReadOnly Default Property Item ( _
    index As Object _
) As DBProviderInfo
    Get
用法
Dim instance As DBProviderInfos
Dim index As Object
Dim value As DBProviderInfo

value = instance(index)

public DBProviderInfo this[
    Object index
] { get; }

public:
property DBProviderInfo^ default[Object^ index] {
    DBProviderInfo^ get (Object^ index);
}

member Item : DBProviderInfo

JScript 支持使用索引属性，但不支持声明新索引属性。

参数

注释

If the call to Contains method returns true, you can access the specified element in the collection by using the syntax DBProviderInfos[index]. If the Contains returns false, this property will throw an exception. In C#, this property is the indexer for the DBProviderInfos class.

示例

The following code example retrieves an item from the collection using two methods. The first method uses the dbprovInfos[0] syntax to retrieve the entire object located in the first position of the collection and place it in the dbInfo object. You can now retrieve all properties from the dbInfo object as usual. The second method demonstrates how to retrieve a specific property from the first object in the collection.

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

namespace DBProvInfos_GetEnum
{
    class Program
    {
        static void Main(string[] args)
        {
            Application app = new Application();
            DBProviderInfos dbprovInfos = app.DBProviderInfos;

            //Using the Item method syntax of [x], obtain the first entry.
            DBProviderInfo dbInfo = dbprovInfos[0];
            String nameOfFirstItem = dbprovInfos[0].Name;

            //Print the name of the log provider object located at position [0].
            Console.WriteLine("The db provider type of the first provider is: {0}", dbInfo.ProviderType);
            Console.WriteLine("The Name of the first database provider is: {0}", nameOfFirstItem);
        }
    }
}

Imports System
Imports System.Collections.Generic
Imports System.Text
Imports Microsoft.SqlServer.Dts.Runtime
 
Namespace DBProvInfos_GetEnum
    Class Program
        Shared  Sub Main(ByVal args() As String)
            Dim app As Application =  New Application() 
            Dim dbprovInfos As DBProviderInfos =  app.DBProviderInfos 
 
            'Using the Item method syntax of [x], obtain the first entry.
            Dim dbInfo As DBProviderInfo =  dbprovInfos(0) 
            Dim nameOfFirstItem As String =  dbprovInfos(0).Name 
 
            'Print the name of the log provider object located at position [0].
            Console.WriteLine("The db provider type of the first provider is: {0}", dbInfo.ProviderType)
            Console.WriteLine("The Name of the first database provider is: {0}", nameOfFirstItem)
        End Sub
    End Class
End Namespace

Sample Output:

The db provider type of the first provider is: OleDb

The Name of the first database provider is: MediaCatalogDB OLE DB Provider