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     How to: Drag XtraGrid rows to the XtraTreeList
     How to: Dynamically Show and Hide Specific Nodes
     How to: Format a Column's Numeric Values as Currency
     How to: Hide specific nodes using filter conditions
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How to: Dynamically Show and Hide Specific Nodes

The example below ensures that Tree List records with the 15% discount are always visible, regardless of the currently applied filtering condition.

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