[DXCategory("Data")]
public event CustomColumnDisplayTextEventHandler CustomColumnDisplayText

<DXCategory("Data")>
Public Event CustomColumnDisplayText As CustomColumnDisplayTextEventHandler

private void gridView1_CustomColumnDisplayText(object sender, CustomColumnDisplayTextEventArgs e) {
    if (e.Column.FieldName == "Distance") {
        e.DisplayText = ((int)e.Value).ToString() + " mil.";
    }
}

Imports System

Private Sub gridView1_CustomColumnDisplayText(ByVal sender As Object, ByVal e As CustomColumnDisplayTextEventArgs)
    If e.Column.FieldName = "Distance" Then
        e.DisplayText = CInt(Math.Truncate(e.Value)).ToString() & " mil."
    End If
End Sub

private void Gv_CustomDrawCell(object sender, XtraGrid.Views.Base.RowCellCustomDrawEventArgs e)
{
    if (e.RowHandle == GridControl.AutoFilterRowHandle)
        e.DisplayText = "AutoFilterRow";
    if (e.RowHandle == GridControl.NewItemRowHandle)
        e.DisplayText = "NewItemRow";
}

Private Sub Gv_CustomDrawCell(ByVal sender As Object, ByVal e As XtraGrid.Views.Base.RowCellCustomDrawEventArgs)
    If e.RowHandle = GridControl.AutoFilterRowHandle Then
        e.DisplayText = "AutoFilterRow"
    End If
    If e.RowHandle = GridControl.NewItemRowHandle Then
        e.DisplayText = "NewItemRow"
    End If
End Sub

tileView1.CustomColumnDisplayText += TileView1_CustomColumnDisplayText;

private void TileView1_CustomColumnDisplayText(object sender, CustomColumnDisplayTextEventArgs e) {
    if (e.IsForGroupRow) {
        e.DisplayText = string.Format("{0} ({1})", e.DisplayText, CalcGroupCount(e.GroupRowHandle));
    }
}

int CalcGroupCount(int groupRowHandle) {
    int groupIndex = Math.Abs(groupRowHandle) - 1;
    return tileView1.DataController.GroupInfo[groupIndex].ChildControllerRowCount;
}

AddHandler tileView1.CustomColumnDisplayText, AddressOf TileView1_CustomColumnDisplayText

Private Sub TileView1_CustomColumnDisplayText(ByVal sender As Object, ByVal e As CustomColumnDisplayTextEventArgs)
    If e.IsForGroupRow Then
        e.DisplayText = String.Format("{0} ({1})", e.DisplayText, CalcGroupCount(e.GroupRowHandle))
    End If
End Sub

Private Function CalcGroupCount(ByVal groupRowHandle As Integer) As Integer
    Dim groupIndex As Integer = Math.Abs(groupRowHandle) - 1
    Return tileView1.DataController.GroupInfo(groupIndex).ChildControllerRowCount
End Function

private void gridView1_CustomColumnDisplayText(object sender, DevExpress.XtraGrid.Views.Base.CustomColumnDisplayTextEventArgs e) {
    if (e.Column.FieldName == "Distance" && e.ListSourceRowIndex == GridControl.InvalidRowHandle) {
        //change the e.DisplayText here
    }
}

Private Sub gridView1_CustomColumnDisplayText(ByVal sender As Object, ByVal e As DevExpress.XtraGrid.Views.Base.CustomColumnDisplayTextEventArgs)
    If e.Column.FieldName = "Distance" AndAlso e.ListSourceRowIndex = GridControl.InvalidRowHandle Then
        'change the e.DisplayText here
    End If
End Sub

using DevExpress.XtraGrid.Views.Base;

private void gridView1_CustomColumnDisplayText(object sender, 
CustomColumnDisplayTextEventArgs e) {
   if(e.Column.FieldName == "Discount")
      if(Convert.ToDecimal(e.Value) == 0) e.DisplayText = "";
}

Imports DevExpress.XtraGrid.Views.Base

Private Sub GridView1_CustomColumnDisplayText(ByVal sender As Object, _
ByVal e As CustomColumnDisplayTextEventArgs) Handles GridView1.CustomColumnDisplayText
   If e.Column.FieldName = "Discount" Then
      If e.Value = 0 Then e.DisplayText = ""
   End If
End Sub

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

// Culture settings for currency formatting
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;

    // Process only valid data rows and the Price column.
    if (e.Column.FieldName != "Price" || e.ListSourceRowIndex == GridControl.InvalidRowHandle)
        return;

    int currencyType = (int)view.GetListSourceRowCellValue(e.ListSourceRowIndex, "CurrencyType");

    decimal price = Convert.ToDecimal(e.Value);

    // Select format based on currency type.
    e.DisplayText = currencyType == 0
        ? string.Format(ciUSA, "{0:c}", price)
        : string.Format(ciEUR, "{0:c}", price);
}

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

' Culture settings for currency formatting
Private ciUSA As New CultureInfo("en-US")
Private ciEUR As New CultureInfo("fr-FR", False)

Private Sub gridView1_CustomColumnDisplayText(
    sender As Object,
    e As CustomColumnDisplayTextEventArgs)

    Dim view As ColumnView = TryCast(sender, ColumnView)

    ' Process only valid data rows and the Price column.
    If e.Column.FieldName <> "Price" _
        OrElse e.ListSourceRowIndex = GridControl.InvalidRowHandle Then
        Return
    End If

    ' Read the currency type from the current row.
    Dim currencyType As Integer = CInt(
        view.GetListSourceRowCellValue(e.ListSourceRowIndex, "CurrencyType"))

    ' Convert the original value to Decimal.
    Dim price As Decimal = Convert.ToDecimal(e.Value)

    ' Select the display format based on the currency type.
    If currencyType = 0 Then
        e.DisplayText = String.Format(ciUSA, "{0:c}", price)
    Else
        e.DisplayText = String.Format(ciEUR, "{0:c}", price)
    End If
End Sub

gridView1.CustomDrawCell += new DevExpress.XtraGrid.Views.Base.RowCellCustomDrawEventHandler(OnCustomDrawCell);
gridView1.CustomColumnDisplayText += new DevExpress.XtraGrid.Views.Base.CustomColumnDisplayTextEventHandler(OnCustomColumnDisplayText);
List<Invoice> invoices = CreateData();

view.OptionsView.ShowGroupPanel = false;
view.CustomColumnDisplayText += View_CustomColumnDisplayText;
grid.MainView = view;

view.OptionsView.ShowGroupPanel = false;
view.CustomColumnDisplayText += View_CustomColumnDisplayText;
grid.MainView = view;

AddHandler gridView1.CustomDrawCell, New DevExpress.XtraGrid.Views.Base.RowCellCustomDrawEventHandler(AddressOf OnCustomDrawCell)
AddHandler gridView1.CustomColumnDisplayText, New DevExpress.XtraGrid.Views.Base.CustomColumnDisplayTextEventHandler(AddressOf OnCustomColumnDisplayText)
Dim invoices As List(Of Invoice) = CreateData()

view.OptionsView.ShowGroupPanel = False
AddHandler view.CustomColumnDisplayText, AddressOf View_CustomColumnDisplayText
grid.MainView = view

view.OptionsView.ShowGroupPanel = False
AddHandler view.CustomColumnDisplayText, AddressOf View_CustomColumnDisplayText
grid.MainView = view