How to: Format Display Text in Grid's Cells Depending on Values in Other Cells

• Aug 01, 2019
• 2 minutes to read

The following example shows how to dynamically customize the cell’s display text by handling the ColumnView.CustomColumnDisplayText event.

The grid View in the example contains the CurrencyType and Price columns. If the currency type is equal to 0, the price is displayed in dollars; if it is equal to 1, it is displayed in euros.

C#

using DevExpress.XtraGrid.Views.Base;
using System.Globalization;

// The cultures used to format the values for the two different currencies.
CultureInfo ciUSA = new CultureInfo("en-US");
CultureInfo ciEUR = new CultureInfo("fr-FR", false);

private void gridView1_CustomColumnDisplayText(object sender, CustomColumnDisplayTextEventArgs e) {
    ColumnView view = sender as ColumnView;
    if (e.Column.FieldName == "Price" && e.ListSourceRowIndex != DevExpress.XtraGrid.GridControl.InvalidRowHandle)
    {
        int currencyType = (int)view.GetListSourceRowCellValue(e.ListSourceRowIndex, "CurrencyType");
        decimal price = Convert.ToDecimal(e.Value);
        switch (currencyType)
        {
            case 0: e.DisplayText = string.Format(ciUSA, "{0:c}", price); break;
            case 1: e.DisplayText = string.Format(ciEUR, "{0:c}", price); break;
        }
    }
}

VB.NET

Imports DevExpress.XtraGrid.Views.Base
Imports System.Globalization

' The cultures used to format the values for the two different currencies.
Dim ciUSA As CultureInfo = New CultureInfo("en-US")
Dim ciEUR As CultureInfo = New CultureInfo("fr-FR", False)

Private Sub GridView1_CustomColumnDisplayText(ByVal sender As Object, _
ByVal e As CustomColumnDisplayTextEventArgs) _
Handles GridView1.CustomColumnDisplayText
    Dim view As ColumnView = TryCast(sender, ColumnView)
    If e.Column.FieldName = "Price" AndAlso e.ListSourceRowIndex <> DevExpress.XtraGrid.GridControl.InvalidRowHandle Then
        Dim currencyType As Integer = CInt(view.GetListSourceRowCellValue(e.ListSourceRowIndex, "CurrencyType"))
        Dim price As Decimal = Convert.ToDecimal(e.Value)
        Select Case currencyType
            Case 0
                e.DisplayText = String.Format(ciUSA, "{0:c}", price)
                Exit Select
            Case 1
                e.DisplayText = String.Format(ciEUR, "{0:c}", price)
                Exit Select
        End Select
    End If
End Sub