Task.BeginFocus Method

Begins to set the focus for the task.

Namespace:  Microsoft.Windows.Design.Interaction
Assembly:  Microsoft.Windows.Design.Interaction (in Microsoft.Windows.Design.Interaction.dll)

Syntax

'Declaration
Public Sub BeginFocus ( _
    data As GestureData _
)

public void BeginFocus(
    GestureData data
)

public:
void BeginFocus(
    GestureData^ data
)

member BeginFocus : 
        data:GestureData -> unit 

public function BeginFocus(
    data : GestureData
)

Parameters

• data
  Type: Microsoft.Windows.Design.Interaction.GestureData
  The gesture data for the focus.

Exceptions

Exception	Condition
ArgumentNullException	data is nulla null reference (Nothing in Visual Basic).
InvalidOperationException	The task already has the focus.

Remarks

When a task has the focus, all user input is directed at that task. Also, the task creates an editing scope. Therefore, all changes that were made while the task has the focus, flow into a single undo event. The focus can only be set on a task if it does not already have the focus.

.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.

See Also

Reference

Task Class

Microsoft.Windows.Design.Interaction Namespace

Other Resources

Tool Architecture

WPF Designer Extensibility