Returns or sets a string that uniquely identifies a member in a collection.
Syntax
object.Key [= string]
The Key property syntax has these parts:
| Part | Description |
| object | Required. An object expression that evaluates to an object in the Applies To list. |
| string | A unique string identifying a member in a collection. |
Remarks
If the string is not unique, an error will occur.
You can set the Key property when you use the Add method to add an object to a collection.
If you expect the Index property to change dynamically, refer to objects in a collection using the Key property.
In addition, you can use the Key property to make your Visual Basic project "self-documenting" by assigning meaningful names to the objects in a collection.