TreeListView.CustomColumnDisplayText Event

Allows you to customize a data cell‘s display text.

Namespace: DevExpress.Xpf.Grid

Assembly: DevExpress.Xpf.Grid.v24.2.dll

NuGet Package: DevExpress.Wpf.Grid.Core

Declaration

C#

public event TreeListCustomColumnDisplayTextEventHandler CustomColumnDisplayText

VB.NET

Public Event CustomColumnDisplayText As TreeListCustomColumnDisplayTextEventHandler

Event Data

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

Property	Description
Column	Gets the column which owns the processed cell.
DisplayText	Gets or sets the display text for the cell currently being processed.
Node	Gets the node which owns the processed cell.
ShowAsNullText	Specifies whether text corresponding to a null value appears faded.
Value	Gets the processed cell’s value.

Remarks

The CustomColumnDisplayText event occurs for bound and unbound columns. The printed GridControl also displays customized text.

If you want to maintain a clean MVVM pattern and customize a data cell’s display text in a View Model, create a command and bind it to the CustomColumnDisplayTextCommand property.

The TreeListCustomColumnDisplayTextEventArgs.DisplayText property contains a cell’s display text. To customize the display text, assign a string value to this property.

Xaml

<dxg:TreeListColumn FieldName="Value"/> 

C#

void treeList_CustomColumnDisplayText(object sender, TreeListCustomColumnDisplayTextEventArgs e) {
    if (e.Column.FieldName == "Value")
        e.DisplayText = string.Format("{0:n2}", e.Value);
} 

VB.NET

Private Sub grid_CustomColumnDisplayText(ByVal sender As Object, ByVal e As TreeListCustomColumnDisplayTextEventArgs)
    If e.Column.FieldName = "Value" Then e.DisplayText = String.Format("{0:n2}", e.Value)
End Sub 

Related GitHub Examples

The following code snippets (auto-collected from DevExpress Examples) contain references to the CustomColumnDisplayText 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.

XAML

wpf-spreadsheet-chart-api/CS/SpreadsheetWPFChartAPISamples/MainWindow.xaml#L52

<dxg:TreeListControl.View>
    <dxg:TreeListView x:Name="view" TreeDerivationMode="ChildNodesSelector" ChildNodesSelector="{StaticResource childrenSelector}" ShowIndicator="False" ShowColumnHeaders="False" AutoWidth="True" AllowPerPixelScrolling="False" CustomColumnDisplayText="view_CustomColumnDisplayText" />
</dxg:TreeListControl.View>

wpf-spreadsheet-pivot-table-api-examples/CS/SpreadsheetWPFPivotTableExamples/MainWindow.xaml#L52

<dxg:TreeListControl.View>
    <dxg:TreeListView x:Name="view" TreeDerivationMode="ChildNodesSelector" ChildNodesSelector="{StaticResource childrenSelector}" ShowIndicator="False" ShowColumnHeaders="False" AutoWidth="True" AllowPerPixelScrolling="False" CustomColumnDisplayText="view_CustomColumnDisplayText" />
</dxg:TreeListControl.View>

wpf-richedit-document-api/CS/DXRichEditControlAPISample/MainWindow.xaml#L57

<dxg:TreeListControl.View>
    <dxg:TreeListView x:Name="view" TreeDerivationMode="ChildNodesSelector" ChildNodesSelector="{StaticResource childrenSelector}" ShowIndicator="False" ShowColumnHeaders="False" AutoWidth="True" AllowPerPixelScrolling="False" CustomColumnDisplayText="view_CustomColumnDisplayText" />
</dxg:TreeListControl.View>