Represents a collection of ViewModelColumn objects defining the list of view columns. Each ViewModelColumn can define both the specific column (the ColumnName property is defined) and all the columns of ViewNode (the ColumnName property is empty). If this collection is empty this means that all columns of all ViewNode objects should be included in the column list. To get actual list of columns begotten by this definition use the ColumnsEffective collection.

'Declaration
 
Public ReadOnly Property ColumnsDefined As ViewModelColumnDefinitionCollection

public ViewModelColumnDefinitionCollection ColumnsDefined {get;}