By default, the FilterInclude property is exItemsWithoutChilds. Use the FilterInclude property to specify whether the child items should be included to the list when the user applies the filter. Use the ColumnFilter property and ColumnFilterType property to specify the column's filter. Use the ApplyFilter to apply the filter at runtime. Use the ClearFilter method to clear the control's filter. Use the ExpandFolders property to include child folders in the list.

Let's say that we have the following hierarchy:

and the ColumnFilter property is "A*", ColumnFilterType property is FilterPattern.

If the FilterInclude property is exItemsWithoutChilds, the filtered list looks like follows:

If the FilterInclude property is exItemsWithChilds, the filtered list looks like follows:

If the FilterInclude property is exRootsWithoutChilds, the filtered list looks like follows:

If the FilterInclude property is exRootsWithChilds, the filtered list looks like follows:

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