/// <summary>
/// Displays the specified control in a drop down area below a value field of the property grid that provides this service.
/// </summary>
/// <param name="control">The drop down list <see cref="T:System.Windows.Forms.Control"></see> to open.</param>
public virtual void DropDownControl(System.Windows.Forms.Control control)
{
this.dropDown = new DropDownCustom(this, control);
this.dropDown.DropDownBehaviours = DropDownBehaviours.CloseOnEscape;
this.dropDown.ShowDropDown();
this.dropDown = null;
}
/// <summary>
/// Populate and show the listbox
/// </summary>
public virtual void ShowListBox()
{
OnDropDownOpen(EventArgs.Empty);
using (ListBox l_ListBox = new ListBox())
{
l_ListBox.BorderStyle = BorderStyle.None;
l_ListBox.HorizontalScrollbar = true;
l_ListBox.IntegralHeight = false;
if (Validator.StandardValues != null)
{
foreach (object o in Validator.StandardValues)
{
l_ListBox.Items.Add(Validator.ValueToDisplayString(o));
}
}
// Calculate the height of the ListBox : l_ListBox.Height
int defaultHeight = l_ListBox.ItemHeight * 3;
int maximumHeight = (int)(Screen.PrimaryScreen.Bounds.Height / 2.1);
l_ListBox.Height = Math.Max(defaultHeight, Math.Min(maximumHeight, l_ListBox.PreferredHeight)) + 2;
using (DropDownCustom l_DropDown = new DropDownCustom(this, l_ListBox))
{
if (selectedItem >= 0 && selectedItem < l_ListBox.Items.Count)
{
l_ListBox.SelectedIndex = selectedItem;
}
l_ListBox.SelectedIndexChanged += new EventHandler(ListBox_SelectedChange);
l_ListBox.Click += new EventHandler(ListBox_Click);
l_DropDown.ShowDropDown();
l_ListBox.Click -= new EventHandler(ListBox_Click);
l_ListBox.SelectedIndexChanged -= new EventHandler(ListBox_SelectedChange);
txtBox.Focus();
OnDropDownClosed(EventArgs.Empty);
}
}
}
