PropertyGrid Adding EventsTab

I have solved this now. It turned out that the site for the property grid was being set again within another function. I removed this call and now the EventsTab is showing.

Giftednewt at 2007-8-30 >

This URL might offer some help:

http://www.dotnet247.com/247reference/msgs/55/278312.aspx

Though you might want to paste the code into Visual Studio to get rid of the highlighting and lack of indentation. I'm pretty sure that code just shows you how to put the tab on the property grid. To actually populate it is another story, one which I'm looking into doing at the moment. Good luck!

Quirk at 2007-8-30 >

Thank you very much for your help, Giftednewt and Quirk. The truth is that I don't understand this process very well (I don't known where I have to add the OnSelectionChanged event to filter the events, for example), but anyway, I have a project with a Form that includes a designer (a Form and a Button) and other Form with one PropertyGrid that shows the properties and events of both controls. I'm sure that the project has many bugs, but it could be a good start point for somebody who, like me, doesn't have this process very clear.

Below, is the source code of the unit, if someone is interested or can help him.

If there is a person who knows how this mechanism works... like Giftednewt.... and has a bit of time, I'm pleased that he can comments the source code and clean the code from bugs, adding or deleting whatever he want.

Thank you again and here is the code.

using System;
using System.Collections.Generic;
using System.Text;
using System.ComponentModel.Design;
using System.Windows.Forms;
using System.ComponentModel;
using System.Drawing;

namespace WindowsFormsDesigner
{
#region MainForm
class MainForm : Form
{
#region Windows Designer
private System.ComponentModel.IContainer components = null;
protected override void Dispose(bool disposing)
{
if (disposing && (components != null))
{
components.Dispose();
}
base.Dispose(disposing);
}
#endregion

PropertiesForm propertiesForm;
MyDesignSurface designSurface;

public MainForm()
{
this.SuspendLayout();
this.BackColor = System.Drawing.Color.White;
this.ClientSize = new System.Drawing.Size(500, 500);
this.StartPosition = System.Windows.Forms.FormStartPosition.Manual;
this.Text = "Windows Forms Designer";
this.ResumeLayout(false);

designSurface = new MyDesignSurface();

propertiesForm = new PropertiesForm(designSurface);
propertiesForm.Left = this.Width + this.Left;
propertiesForm.Height = this.Height;
propertiesForm.Show();

IServiceContainer serviceContainer = (IServiceContainer)designSurface.GetService(typeof(IServiceContainer));
serviceContainer.AddService(typeof(IEventBindingService), new EventBindingService(designSurface));

ISelectionService selectionService = (ISelectionService)designSurface.GetService(typeof(ISelectionService));
selectionService.SelectionChanged += new EventHandler(OnSelectionChanged);

designSurface.BeginLoad(typeof(Form));
Control c = designSurface.View as Control;
c.Parent = this;
c.Dock = DockStyle.Fill;

IDesignerHost designerHost = (IDesignerHost)designSurface.GetService(typeof(IDesignerHost));
System.Drawing.Design.IToolboxUser itu = (System.Drawing.Design.IToolboxUser)designerHost.GetDesigner(designerHost.RootComponent);
itu.ToolPicked(new System.Drawing.Design.ToolboxItem(typeof(Button)));
}

private void OnSelectionChanged(object sender, System.EventArgs e)
{
ISelectionService s = (ISelectionService)designSurface.GetService(typeof(ISelectionService));
IDesignerHost designerHost = (IDesignerHost)designSurface.GetService(typeof(IDesignerHost));

object[] selection;
if (s.SelectionCount == 0)
propertiesForm.SetObjectToPropertyGrid(null);
else
{
selection = new object[s.SelectionCount];
s.GetSelectedComponents().CopyTo(selection, 0);
propertiesForm.SetObjectToPropertyGrid(selection);
}
}
}
#endregion

#region MyDesignerSurface
class MyDesignSurface : DesignSurface, IServiceProvider
{
#region IServiceProvider Members
object IServiceProvider.GetService(Type serviceType)
{
return this.GetService(serviceType);
}
#endregion
}
#endregion

#region PropertiesForm
class PropertiesForm : Form
{
private MyDesignSurface designSurface;
private System.ComponentModel.IContainer components = null;
private MyPropertyGrid pg = null;

protected override void Dispose(bool disposing)
{
if (disposing && (components != null))
{
components.Dispose();
}
base.Dispose(disposing);
}

public PropertiesForm(MyDesignSurface designSurface)
{
this.designSurface = designSurface;

this.SuspendLayout();

this.TopMost = true;
this.StartPosition = FormStartPosition.Manual;
this.Size = new Size(258, 700);
this.FormBorderStyle = FormBorderStyle.FixedToolWindow;
this.ShowInTaskbar = false;

pg = new MyPropertyGrid();
pg.Parent = this;
pg.Dock = DockStyle.Fill;

this.ResumeLayout(false);
}

internal void SetObjectToPropertyGrid(object[] c)
{
IDesignerHost designerHost = (IDesignerHost)designSurface.GetService(typeof(IDesignerHost));

if (c == null)
pg.SelectedObject = null;
else
pg.SelectedObjects = c;

if (designerHost != null)
{
pg.Site = (new IDEContainer(designerHost)).CreateSite(pg);
pg.PropertyTabs.AddTabType(typeof(System.Windows.Forms.Design.EventsTab), PropertyTabScope.Document);
pg.ShowEvents(true);
}
else
{
pg.Site = null;
}
}
}
#endregion

#region MyPropertyGrid
internal class MyPropertyGrid : System.Windows.Forms.PropertyGrid
{
private System.ComponentModel.Container components = null;

public MyPropertyGrid()
{
InitializeComponent();
}

protected override void Dispose(bool disposing)
{
if (disposing)
{
if (components != null)
{
components.Dispose();
}
}
base.Dispose(disposing);
}

#region Component Designer generated code
private void InitializeComponent()
{
components = new System.ComponentModel.Container();
}
#endregion

public void ShowEvents(bool show)
{
ShowEventsButton(show);
}
}
#endregion

#region Site
// this is taken from SharpDevelop. It's a copy&paste
class IDEContainer : Container
{
class IDESite : ISite
{
private string name = "";
private IComponent component;
private IDEContainer container;

public IDESite(IComponent sitedComponent, IDEContainer site, string aName)
{
component = sitedComponent;
container = site;
name = aName;
}

public IComponent Component
{
get { return component; }
}
public IContainer Container
{
get { return container; }
}

public bool DesignMode
{
get { return false; }
}

public string Name
{
get { return name; }
set { name = value; }
}

public object GetService(Type serviceType)
{
return container.GetService(serviceType);
}
}

public IDEContainer(IServiceProvider sp)
{
serviceProvider = sp;
}

protected override object GetService(Type serviceType)
{
object service = base.GetService(serviceType);
if (service == null)
{
service = serviceProvider.GetService(serviceType);
}
return service;
}

public ISite CreateSite(IComponent component)
{
return CreateSite(component, "UNKNOWN_SITE");
}

protected override ISite CreateSite(IComponent component, string name)
{
ISite site = base.CreateSite(component, name);
if (site == null)
{
}
return new IDESite(component, this, name);
}

private IServiceProvider serviceProvider;
}
#endregion

#region EventBindingService
public class EventBindingService : System.ComponentModel.Design.EventBindingService
{
public EventBindingService(IServiceProvider myhost)
: base(myhost)
{
}

#region IEventBindingService Members
protected override string CreateUniqueMethodName(IComponent component, EventDescriptor e)
{
throw new Exception("The method or operation is not implemented.");
}

protected override System.Collections.ICollection GetCompatibleMethods(System.ComponentModel.EventDescriptor e)
{
List<object> l = new List<object>();
return l;
}

protected override bool ShowCode(System.ComponentModel.IComponent component, System.ComponentModel.EventDescriptor e, string methodName)
{
throw new Exception("The method or operation is not implemented.");
}

protected override bool ShowCode(int lineNumber)
{
throw new Exception("The method or operation is not implemented.");
}

protected override bool ShowCode()
{
throw new Exception("The method or operation is not implemented.");
}
#endregion
}
#endregion
}

intrus0 at 2007-8-30 >

Hi Giftednewt,

Thanks a lot. Can you please add the structure of DesignSite and type of m_serviceContainer and objSurface. I have the similar kind of requirement. I am not able to bring custom control's events collection in form design mode.

Thanks in advance.

Pals.

PALANISELVAM at 2007-8-30 >