/// <summary>
/// Return a list of the values to display in the grid
/// </summary>
/// <param name="context"></param>
/// <returns>A list of values the user can choose from</returns>
public override StandardValuesCollection GetStandardValues
(System.ComponentModel.ITypeDescriptorContext context)
{
// Try to get a store from the current context
// "context.Instance" returns the element(s) that
// are currently selected i.e. whose values are being
// shown in the property grid.
// Note that the user could have selected multiple objects,
// in which case context.Instance will be an array.
Store store = GetStore(context.Instance);
DataGridSuperHeader sh = (DataGridSuperHeader)context.Instance;
DataGrid dg = sh.DataGrid;
List <string> values = new List <string>();
if (store != null)
{
foreach (ColumnAttribute col in dg.Columns)
{
values.Add(col.Name);
}
}
values.Add("");
return(new StandardValuesCollection(values));
}
/// <summary>
/// Attempts to get to a store from the currently selected object(s)
/// in the property grid.
/// </summary>
private Store GetStore(object gridSelection)
{
// We assume that "instance" will either be a single model element, or
// an array of model elements (if multiple items are selected).
DataGridSuperHeader currentElement = null;
object[] objects = gridSelection as object[];
if (objects != null && objects.Length > 0)
{
currentElement = objects[0] as DataGridSuperHeader;
}
else
{
currentElement = gridSelection as DataGridSuperHeader;
}
return((currentElement == null) ? null : currentElement.Store);
}
