Syntax

C#
Object this[ string key ] { get; set; }

Visual Basic
Default Property Item ( _ key As String _ ) As Object Get Set

Visual C++
property Object^ default[String^ key] { Object^ get (String^ key); void set (String^ key, Object^ value); }

Exceptions

Exception	Condition
System..::..ArgumentNullException	If the key is null
System..::..ArgumentOutOfRangeException	If the key is empty