Позволяет переключаться между несколькими панелями, например, в меню настроек Вашей программы, как в режиме выполнения программы, так и в режиме разработки (во время работы над формой в конструкторе Visual Studio)
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| using System;
using System.ComponentModel;
using System.Drawing.Design;
using System.Windows.Forms;
namespace FSImark.Controls
{
[Designer(typeof(PanelPageControlDesigner))]
public class PanelPageControl : Panel
{
private Panel[] panelPages;
private int selectedIndex;
private Panel selectedPanel;
[Category("PanelPageControl")]
[Description("Displayed panel")]
[Editor(typeof(PanelPageSelectorEditor), typeof(UITypeEditor))]
public Panel SelectedPanel
{
get
{
if (PanelPages != null) return selectedPanel;
return null;
}
set
{
selectedIndex = GetIndexFromPanel(value);
SelectPanel(value);
}
}
[Category("PanelPageControl")]
[Description("PanelPage Collection")]
public Panel[] PanelPages
{
get { return panelPages; }
set
{
if (value != null)
{
panelPages = value;
if (panelPages.Length > 0 && selectedIndex < 0)
{
selectedIndex = 0;
selectedPanel = value[selectedIndex];
SelectPanel(selectedPanel);
}
}
}
}
[Category("PanelPageControl")]
[Description("Index of selected page")]
public int SelectedIndex
{
get
{
if (PanelPages == null) return -1;
return selectedIndex;
}
set
{
if (PanelPages != null && PanelPages.Length > 0)
{
if (value < 0 || value > PanelPages.Length - 1) throw new ArgumentException(nameof(SelectedIndex));
selectedIndex = value;
SelectPanel(PanelPages[value]);
}
}
}
public event EventHandler SelectionChanged = delegate { };
protected override void OnControlAdded(ControlEventArgs e) { }
private void SelectPanel(Panel selectingPanel)
{
if (selectingPanel == selectedPanel) return;
Controls.Remove(selectedPanel);
selectedPanel = selectingPanel;
Controls.Add(selectedPanel);
if (selectedPanel.Dock != DockStyle.Fill)
selectedPanel.Dock = DockStyle.Fill;
SelectionChanged(this, EventArgs.Empty);
}
private int GetIndexFromPanel(Panel panel)
{
if (PanelPages == null) return -1;
for (int index = 0; index < PanelPages.Length; index++)
if (panel == PanelPages[index]) return index;
return -1;
}
protected override void Dispose(bool disposing)
{
if (PanelPages != null)
foreach (Panel page in PanelPages)
page.Dispose();
base.Dispose(disposing);
}
}
} |
|
PanelPageControlForm.rar |
