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 End-User Documentation
View this topic on docs.devexpress.com (Learn more)

ValidateNodeEventArgs Class

Provides data for the TreeList.ValidateNode event.

Namespace:DevExpress.XtraTreeList
Assembly:DevExpress.XtraTreeList.v19.2.dll

Expanded Syntax

Expanded Remarks

The TreeList.ValidateNode event fires when attempting to move node focus. It enables you to specify whether the currently focused node's data is valid, and so whether moving focus is permitted.

To determine whether the currently focused node's data is valid, you will need to access the node's cell values. Thus, the ValidateNodeEventArgs class enables you to identify the processed node using the inherited NodeEventArgs.Node property. This class introduces the Valid and ErrorText properties that specify if a node's data is valid and define the text displayed within an error message box.

Expanded Inheritance Hierarchy

System.Object
    System.EventArgs
       NodeEventArgs
          ValidateNodeEventArgs

Expanded See Also

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