windowsforms-devexpress-dot-xtramap-dot-mapitemslayerbase-979373c9.md
Occurs for each attribute value that is used in a title or tooltip before this title or tooltip is displayed.
Namespace : DevExpress.XtraMap
Assembly : DevExpress.XtraMap.v25.2.dll
NuGet Package : DevExpress.Win.Map
public event AttributeDisplayValueEditEventHandler AttributeDisplayValueEdit
Public Event AttributeDisplayValueEdit As AttributeDisplayValueEditEventHandler
The AttributeDisplayValueEdit event's data class is AttributeDisplayValueEditEventArgs. The following properties provide information specific to this event:
| Property | Description |
|---|---|
| DisplayValue | Gets or sets an attribute display value. |
| Name | Returns the name of an attribute. |
| PatternFragment | Returns the pattern fragment which will be replaced with the AttributeDisplayValueEditEventArgs.DisplayValue. |
| Value | Returns an attribute value. |
Handle the AttributeDisplayValueEdit event to modify existing item attributes. Use the e.Name property to determine which attribute is processed. Use the e.DisplayValue property to specify a value you want to display.
private void VectorLayer_AttributeDisplayValueEdit(object sender, DevExpress.Map.AttributeDisplayValueEditEventArgs e) {
if (e.Value == null && e.Name=="NAME"){
e.DisplayValue = "Unknown";
}
}
Private Sub VectorLayer_AttributeDisplayValueEdit(ByVal sender As Object, ByVal e As DevExpress.Map.AttributeDisplayValueEditEventArgs)
If e.Value Is Nothing AndAlso e.Name Is "NAME" Then
e.DisplayValue = "Unknown"
End If
End Sub
See Also