Gets or sets the tag of this
AnnObject.
Syntax
| Visual Basic (Declaration) | |
|---|
Public Overridable Property Tag As Integer |
| Visual Basic (Usage) |  Copy Code |
|---|
Dim instance As AnnObject
Dim value As Integer
instance.Tag = value
value = instance.Tag
|
| C# | |
|---|
public virtual int Tag {get; set;} |
| Managed Extensions for C++ | |
|---|
public: __property virtual int get_Tag();
public: __property virtual void set_Tag(
int value
); |
| C++/CLI | |
|---|
public:
virtual property int Tag {
int get();
void set (int value);
} |
Return Value
And integer value that specifies the tag of this
AnnObject.
Example
This sample adds a tag to each AnnObject added to the container
| Visual Basic | Copy Code |
|---|
Private tagCount As Integer
Public Sub AnnObject_Tag()
tagCount = 0
Dim container As AnnContainer = New AnnContainer()
AddHandler container.Objects.ItemAdded, AddressOf AnObjectAddedToContainer
Dim lineObj As AnnLineObject = New AnnLineObject()
container.Objects.Add(lineObj)
Dim rectObj As AnnRectangleObject = New AnnRectangleObject()
container.Objects.Add(rectObj)
Dim ellipseObj As AnnEllipseObject = New AnnEllipseObject()
container.Objects.Add(ellipseObj)
For Each obj As AnnObject In container.Objects
MessageBox.Show(String.Format("Object type: {0}, Tag: {1}", obj.GetType().Name, obj.Tag))
Next obj
End Sub
Private Sub AnObjectAddedToContainer(ByVal sender As Object, ByVal e As RasterCollectionEventArgs(Of AnnObject))
Dim obj As AnnObject = e.Item
obj.Tag = tagCount
tagCount += 1
End Sub |
| C# | Copy Code |
|---|
private int tagCount;
public void AnnObject_Tag()
{
tagCount = 0;
// create a container and subclass to its Objects.ItemAdded event
AnnContainer container = new AnnContainer();
container.Objects.ItemAdded += new EventHandler<RasterCollectionEventArgs<AnnObject>>(AnObjectAddedToContainer);
// add a few objects to the container
AnnLineObject lineObj = new AnnLineObject();
container.Objects.Add(lineObj);
AnnRectangleObject rectObj = new AnnRectangleObject();
container.Objects.Add(rectObj);
AnnEllipseObject ellipseObj = new AnnEllipseObject();
container.Objects.Add(ellipseObj);
// enumerate the objects in the container and show their tag
foreach(AnnObject obj in container.Objects)
MessageBox.Show(String.Format("Object type: {0}, Tag: {1}", obj.GetType().Name, obj.Tag));
}
private void AnObjectAddedToContainer(object sender, RasterCollectionEventArgs<AnnObject> e)
{
// get the object
AnnObject obj = e.Item;
// update its tag
obj.Tag = tagCount;
tagCount++;
} |
Remarks
Requirements
Target Platforms: Microsoft .NET Framework 2.0, Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 family
See Also
