TableView.CustomDataUpdateFormatCondition Event

Allows defining a custom logic of conditional formatting of the changed grid cells (rows).

Assembly : DevExpress.Xpf.Grid.v25.2.dll

NuGet Package : DevExpress.Wpf.Grid.Core

Declaration

C#
VB.NET

csharp

public event EventHandler<CustomDataUpdateFormatConditionEventArgs> CustomDataUpdateFormatCondition

Public Event CustomDataUpdateFormatCondition As EventHandler(Of CustomDataUpdateFormatConditionEventArgs)

Event Data

The CustomDataUpdateFormatCondition event's data class is CustomDataUpdateFormatConditionEventArgs. The following properties provide information specific to this event:

Property	Description
Allow	Gets or sets whether the formatting should be applied to a processed cell (row).
Condition	Gets the currently processed format condition.
NewValue	Gets the new cell value.
OldValue	Gets the previous cell value.

Remarks

Use the DataUpdateFormatCondition.Rule property to set a rule that determines whether the data update formatting is applied.

To define a custom logic, set the DataUpdateFormatCondition.Rule property to DataUpdateRule.Custom and handle the CustomDataUpdateFormatCondition (or TreeListView.CustomDataUpdateFormatCondition) event.

The code sample below shows how to define a custom logic for conditional formatting.

XAML
C#

xaml

<dxg:TableView x:Name="view" CustomDataUpdateFormatCondition="view_CustomDataUpdateFormatCondition">
   <dxg:TableView.FormatConditions>
      <dxg:DataUpdateFormatCondition FieldName="DeltaPrice" Rule="Custom" PredefinedFormatName="LightRedFillWithDarkRedText" />
   </dxg:TableView.FormatConditions>
</dxg:TableView>

csharp

private void view_CustomDataUpdateFormatCondition(object sender, CustomDataUpdateFormatConditionEventArgs e) {
   if((decimal)e.NewValue < 0)
      e.Allow = true;
   e.Condition.ApplyToRow = true;
}