public object Row { get; }

Public ReadOnly Property Row As Object

if (e.IsGetData)
    e.Value = _Cache.GetValue(e.Row);
if (e.IsSetData)

string colorName = (string)((DataRowView)e.Row)["Color"];
string fileName = GetFileName(colorName).ToLower();

{
    e.Value = legendMarkersTable[((Series)e.Row)];
}

void OnGridViewCustomUnboundColumnData(object sender, CustomColumnDataEventArgs e) {
    Task task = e.Row as Task;
    if(task == null)

return;
Customer customer = e.Row as Customer;
if (customer != null && modifiedItems.Contains(customer)) {

Private Sub gridView1_CustomUnboundColumnData(ByVal sender As Object, ByVal e As DevExpress.XtraGrid.Views.Base.CustomColumnDataEventArgs)
    If e.IsGetData Then e.Value = _Cache.GetValue(e.Row)
    If e.IsSetData Then _Cache.SetValue(e.Row, e.Value)

Dim view As GridView = TryCast(sender, GridView)
Dim colorName As String = CStr(CType(e.Row, DataRowView)("Color"))
Dim fileName As String = GetFileName(colorName).ToLower()

If e.IsGetData AndAlso e.Column Is colImage Then
    e.Value = legendMarkersTable(CType(e.Row, Series))
End If

Private Sub OnGridViewCustomUnboundColumnData(ByVal sender As Object, ByVal e As CustomColumnDataEventArgs)
    Dim task As Task = TryCast(e.Row, Task)
    If task Is Nothing Then Return

If Not Equals(e.Column.FieldName, "IsModified") Then Return
Dim customer As Customer = TryCast(e.Row, Customer)
If customer IsNot Nothing AndAlso modifiedItems.Contains(customer) Then