## siSelectionChangeType

### Description

Specifies the type of operation performed to update the selection.

### C# Syntax

    siSelectionChangeType.siAddedToSelection                                    // 0

    siSelectionChangeType.siRemovedFromSelection                                // 1

Constant | Value | Description
--- | --- | ---
siAddedToSelection | 0 | One or more objects added to selection.
siRemovedFromSelection | 1 | One or more objects removed from selection.

### Applies To

Context Attributes

### See Also

OnEvent callback