GridColumnDataEventArgs.Source Property

Gets the grid control that raised the event.

Namespace: DevExpress.Mobile.DataGrid

Assembly: DevExpress.Mobile.Grid.v18.2.dll

Declaration

C#

public GridControl Source { get; }

VB.NET

Public ReadOnly Property Source As GridControl

Property Value

Type	Description
GridControl	A GridControl object that raised the event.

Remarks

Important

This documentation topic describes legacy technology. We no longer develop new functionality for the GridControl and suggest that you use the new DataGridView control instead.

Example

Assume that the GridControl instance is bound to a collection of orders. Each order has the “Product”, “UnitPrice”and “Quantity” fields. The example below shows how to add an unbound column to the grid to display the amount of each order according to the expression: UnitPrice*Quantity.

The result is displayed below:

C#

// Returns the total for a specific row.
decimal getTotalValue(GridControl grid, int rowHandle) {
    decimal unitPrice = Convert.ToDecimal(grid.GetCellValue(rowHandle, "Product.UnitPrice"));
    decimal quantity = Convert.ToDecimal(grid.GetCellValue(rowHandle, "Quantity"));
    return unitPrice * quantity;
}

// Provides data for the Total column.
void OnCustomUnboundColumnData(object sender, GridColumnDataEventArgs e) {
    if (e.Column.FieldName == "Total" && e.IsGetData)
        e.Value = getTotalValue (e.Source, e.RowData.RowHandle);
}

// Customizes the appearance settings.
void OnCustomizeCell(CustomizeCellEventArgs e) {
if (e.FieldName == "Total") {
        e.BackgroundColor = Color.FromRgb(247, 240, 213);
        e.Handled = true;
    }
}

XAML

<dxGrid:GridControl ItemsSource="{Binding Orders}"
                    CustomUnboundColumnData="OnCustomUnboundColumnData"
                    CustomizeCell="OnCustomizeCell">

    <dxGrid:GridControl.Columns>
        <dxGrid:TextColumn FieldName="Product.Name" Caption="Product"/>
        <dxGrid:NumberColumn FieldName="Product.UnitPrice" Caption="Price" DisplayFormat="C0"/>
        <dxGrid:NumberColumn FieldName="Quantity" />
        <dxGrid:NumberColumn FieldName="Total" IsReadOnly="True"
                             UnboundType="Decimal" DisplayFormat="C0"/>
    </dxGrid:GridControl.Columns>
</dxGrid:GridControl>