Syntax
| Visual Basic (Declaration) | |
|---|---|
Public Overridable Sub Invalidate() | |
| Visual Basic (Usage) |  Copy Code |
|---|---|
Dim instance As AnnObject instance.Invalidate() | |
| C# | |
|---|---|
public virtual void Invalidate() | |
| C++/CLI | |
|---|---|
public: virtual void Invalidate(); | |
Example
This example will check if any of the objects in a container is a line, if so, it will change the color to red and signal the container to redraw the the object.
| Visual Basic | Copy Code |
|---|---|
Private Sub InvalidateExample(ByVal container As AnnContainer) For Each obj As AnnObject In container.Children If TypeOf (obj) Is AnnLineObject Then obj.Stroke = Colors.Red obj.Invalidate() End If Next End Sub | |
| C# | Copy Code |
|---|---|
private void InvalidateExample(AnnContainer container) { foreach(AnnObject obj in container.Children) { if(obj is AnnLineObject) { obj.Stroke = Colors.Red; obj.Invalidate(); } } } | |
| SilverlightCSharp | Copy Code |
|---|---|
private void InvalidateExample(AnnContainer container) { foreach(AnnObject obj in container.Children) { if(obj is AnnLineObject) { obj.Stroke = Colors.Red; obj.Invalidate(); } } } | |
| SilverlightVB | Copy Code |
|---|---|
Private Sub InvalidateExample(ByVal container As AnnContainer)
For Each obj As AnnObject In container.Children
If TypeOf obj Is AnnLineObject Then
obj.Stroke = Colors.Red
obj.Invalidate()
End If
Next obj
End Sub | |
Requirements
Target Platforms: Silverlight 3.0, Windows XP, Windows Server 2003 family, Windows Server 2008 family, Windows Vista, Windows 7, MAC OS/X (Intel Only)