windowsforms-devexpress-dot-xtraeditors-dot-filtercontrol-d5ff428e.md
Fires before the Filter Control displays editors for operands.
Namespace : DevExpress.XtraEditors
Assembly : DevExpress.XtraEditors.v25.2.dll
NuGet Package : DevExpress.Win.Navigation
[Browsable(false)]
[DXCategory("Events")]
[EditorBrowsable(EditorBrowsableState.Never)]
public event ShowValueEditorEventHandler BeforeShowValueEditor
<Browsable(False)>
<EditorBrowsable(EditorBrowsableState.Never)>
<DXCategory("Events")>
Public Event BeforeShowValueEditor As ShowValueEditorEventHandler
The BeforeShowValueEditor event's data class is ShowValueEditorEventArgs. The following properties provide information specific to this event:
| Property | Description |
|---|---|
| CurrentNode | Gets the current node in the FilterControl’s tree of criteria. |
| CustomRepositoryItem | Allows you to specify a custom editor to be opened instead of the default one, specified by the Editor property. |
| Editor | |
| FocusedElementIndex | Gets the index of the current operand value. |
| OperandValue | Gets the current operand value. |
| Operation | Gets the operation of the current node. |
| PropertyName | Gets the name of the current property (column/field). Inherited from BaseNodeEventArgs. |
| PropertyType | Gets the type of the current property (column/field). Inherited from BaseNodeEventArgs. |
This event is obsolete. Use the FilterControl.CustomValueEditor, FilterControl.CustomValueEditorForEditing, and FilterControl.ValueEditorShown events to assign editors to the Filter Control’s operands, and customize settings of the editors.
The following code snippet (auto-collected from DevExpress Examples) contains a reference to the BeforeShowValueEditor event.
Note
The algorithm used to collect these code examples remains a work in progress. Accordingly, the links and snippets below may produce inaccurate results. If you encounter an issue with code examples below, please use the feedback form on this page to report the issue.
how-to-create-and-register-custom-filter-editor-functions/CS/DXApplication5/Main.cs#L24
//e.FilterEditor.PopupMenuShowing += OnPopupMenuShowing;
e.FilterEditor.BeforeShowValueEditor += OnBeforeShowValueEditor;
}
how-to-create-and-register-custom-filter-editor-functions/VB/DXApplication5/Main.vb#L26
'e.FilterEditor.PopupMenuShowing += OnPopupMenuShowing;
AddHandler e.FilterEditor.BeforeShowValueEditor, AddressOf OnBeforeShowValueEditor
End Sub
See Also