VB.NET object initialization syntax basics

Question

In VB.NET, I am looking at a line of code that passes the following value to a procedure that defines the parameter as type "object."

New Object() {gClient.ContactManager, LyncUri}

Here's the complete relevant code

Dim gClient As Microsoft.Lync.Model.LyncClient
gClient = Microsoft.Lync.Model.LyncClient.GetClient()

    gClient.ContactManager.BeginSearch(LyncUri,
        Ly.SearchProviders.GlobalAddressList,
        Ly.SearchFields.EmailAddresses,
        Ly.SearchOptions.IncludeContactsWithoutSipOrTelUri,
        1,
        AddressOf SearchCallback,
        New Object() {gClient.ContactManager, LyncUri})

and procedure definition

Public Function BeginSearch(searchString As String, providers As Microsoft.Lync.Model.SearchProviders, searchFields As Microsoft.Lync.Model.SearchFields, searchOptions As Microsoft.Lync.Model.SearchOptions, maxResults As UInteger, contactsAndGroupsCallback As System.AsyncCallback, state As Object) As System.IAsyncResult

I have seen object initializer code that initializes properties of an object by assigning properties values within the brackets using the syntax format of {property1 = value1, property2 = value}, for example but what exactly is the above code doing?

It creates an array. Example: Dim obj As String() = New String() {"MyObj1", "MyObj2", "MyObj2"}. — Bjørn-Roger Kringsjå
– Bjørn-Roger Kringsjå, Commented Dec 14, 2013 at 16:17

Hans Passant · Accepted Answer · 2013-12-14 17:48:13Z

1

New Object() creates an array of objects. What's between the { braces } is what initializes the elements of the array. Very convenient syntax sugar for the verbose:

dim arr = New Object(1)
arr(0) = gClient.ContactManager
arr(1) = LyncUri

answered Dec 14, 2013 at 17:48

Hans Passant

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