Public ReadOnly Default Property Item ( _
    index As Object _
) As ConnectionManager
    Get

Dim instance As Connections
Dim index As Object
Dim value As ConnectionManager

value = instance(index)

public ConnectionManager this[
    Object index
] { get; }

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

member Item : ConnectionManager

JScript supports the use of indexed properties, but not the declaration of new ones.

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

namespace Connections_Item
{
    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\ExecuteProcess Sample\ExecuteProcess\UsingExecuteProcess.dtsx";

            // Create an application and load the sample.
            Application app = new Application();
            Package pkg = app.LoadPackage(mySample, null);
            Connections conns = pkg.Connections;

            //Using the Item method syntax of [x], obtain the
            // entire first entry, and then just the name.
            ConnectionManager myConnMgr = conns[0];
            String nameOfFirstItem = conns[0].Name;

            //Print the name of the connection manager located at position [0].
            Console.WriteLine("The ID of the first connection info is: {0}", myConnMgr.ID);
            Console.WriteLine("The Name of the first connection info is: {0}", nameOfFirstItem);
        }
    }
}

Imports System
Imports System.Collections.Generic
Imports System.Text
Imports Microsoft.SqlServer.Dts.Runtime
 
Namespace Connections_Item
    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\ExecuteProcess Sample\ExecuteProcess\UsingExecuteProcess.dtsx" 
 
            ' Create an application and load the sample.
            Dim app As Application =  New Application() 
            Dim pkg As Package =  app.LoadPackage(mySample,Nothing) 
            Dim conns As Connections =  pkg.Connections 
 
            'Using the Item method syntax of [x], obtain the
            ' entire first entry, and then just the name.
            Dim myConnMgr As ConnectionManager =  conns(0) 
            Dim nameOfFirstItem As String =  conns(0).Name 
 
            'Print the name of the connection manager located at position [0].
            Console.WriteLine("The ID of the first connection info is: {0}", myConnMgr.ID)
            Console.WriteLine("The Name of the first connection info is: {0}", nameOfFirstItem)
        End Sub
    End Class
End Namespace