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Adds a new property to the collection.
Namespace:  Microsoft.VisualStudio.Utilities
Assembly:  Microsoft.VisualStudio.CoreUtility (in Microsoft.VisualStudio.CoreUtility.dll)
Syntax
'Declaration
Public Sub AddProperty ( _
    key As Object, _
    property As Object _
)
public void AddProperty(
    Object key,
    Object property
)
public:
void AddProperty(
    Object^ key, 
    Object^ property
)
member AddProperty : 
        key:Object * 
        property:Object -> unit
public function AddProperty(
    key : Object, 
    property : Object
)
Parameters
key
Type: System.ObjectThe key by which the property can be retrieved. Must be non-nulla null reference (Nothing in Visual Basic).
property
Type: System.ObjectThe property to associate with the key.
Exceptions
| Exception | Condition | 
|---|---|
| ArgumentNullException | key is nulla null reference (Nothing in Visual Basic).  | 
| ArgumentException | An element with the same key already exists in the collection.  | 
.NET Framework Security
- Full trust for the immediate caller. This member cannot be used by partially trusted code. For more information, see Using Libraries from Partially Trusted Code.