DataGridView.CustomCellAppearance Event

Occurs before a data cell is painted.

Namespace: DevExpress.Maui.DataGrid

Assembly: DevExpress.Maui.DataGrid.dll

NuGet Package: DevExpress.Maui.DataGrid

Declaration

public event EventHandler<CustomCellAppearanceEventArgs> CustomCellAppearance

Event Data

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

Property	Description
BackgroundColor	Gets or sets the cell background color.
Column	Gets the column that contains the cell.
FieldName	Gets the field name of the column that contains the cell.
FontAttributes	Gets or sets whether the cell text is bold or italic.
FontColor	Gets or sets the cell text color.
FontFamily	Gets or sets the font family name for the cell text.
FontSize	Gets or sets the cell text size.
Item	Gets an object that specifies the data source’s item to which the grid’s data row corresponds.
RowHandle	Gets the handle of the row that contains the cell.
TextDecorations	Gets or sets whether the cell text is underlined and/or strike-through.

Remarks

Handle the CustomCellAppearance event to customize the appearance of each cell individually. Use the FieldName and RowHandle parameters to identify a column and row to which the cell belongs, BackgroundColor/FontColor to specify cell colors, and FontSize/FontFamily/FontAttributes to configure cell font settings.

Example

This example shows how to use the CustomCellAppearance event to customize the appearance of individual data cells within the grid.

• Set different background colors for even and odd rows.
• Change the font color for cells in the specified columns depending on their values.

XAML

<dxg:DataGridView x:Name="dataGridView" ItemsSource="{Binding}" 
                  CustomCellAppearance="DataGridView_CustomCellAppearance">
    <!-- ... -->
</dxg:DataGridView>

C#

using Microsoft.Maui.Graphics;
using DevExpress.Maui.DataGrid;
// ...

void DataGridView_CustomCellAppearance(object sender, CustomCellAppearanceEventArgs e) {
    if (e.RowHandle % 2 == 0)
        e.BackgroundColor = Color.FromArgb("#F7F7F7");
    e.FontColor = Color.FromArgb("#55575C");
    if (e.FieldName == "ActualSales" || e.FieldName == "TargetSales") {
        double value = (double)dataGridView.GetCellValue(e.RowHandle, e.FieldName);
        if (value > 7000000)
            e.FontColor = Color.FromArgb("#00AE00");
        else if (value < 4000000)
            e.FontColor = Color.FromArgb("#FF5458");
    }
}