IDynamicCacheLayerManager.Invalidate Method

Invalidate a certain area of the cache, according to the given extent. If the input extent is null, invalidates the entire cache. Duoble-buffer does not show changes until new tiles are available.

[Visual Basic .NET]
Public Sub Invalidate ( _
    ByVal Extent As IEnvelope, _
    ByVal doubleBuffer As Boolean _
)

[C#]
public void Invalidate (
    IEnvelope Extent,
    bool doubleBuffer
);

[C++]
HRESULT Invalidate(
  IEnvelope* Extent,
  VARIANT_BOOL doubleBuffer
);

[C++]
Parameters
Extent [in]
  Extent is a parameter of type IEnvelope
doubleBuffer [in]
  doubleBuffer is a parameter of type VARIANT_BOOL

Product Availability

Remarks

Passing a null extent will result in update of the cache for the entire layer (determined by the layer area of interest).

When double-buffer is false, the invalidated tiles will disappear from the display immediately.

When double-buffer is true, the invalidated tiles will keep being rendered, until the new tiles are ready, or until a defined max time (time out), which ever comes first.

See Also