using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

using System.Windows.Forms;

namespace CodeWalker.WinForms

{

public partial class ReadOnlyPropertyGrid : PropertyGridFix

{

public ReadOnlyPropertyGrid()

{

InitializeComponent();

}

protected override void OnPaint(PaintEventArgs pe)

{

base.OnPaint(pe);

}

private bool _readOnly = true;

public bool ReadOnly

{

get { return _readOnly; }

set

{

_readOnly = value;

SetObjectAsReadOnly(SelectedObject, _readOnly);

}

}

private TypeDescriptionProvider provider = null;

private object providedObject = null;

protected override void OnSelectedObjectsChanged(EventArgs e)

{

if (providedObject != null)

{

SetObjectAsReadOnly(providedObject, false);

}

SetObjectAsReadOnly(SelectedObject, _readOnly);

base.OnSelectedObjectsChanged(e);

}

private void SetObjectAsReadOnly(object selectedObject, bool isReadOnly)

{

if (SelectedObject != null)

{

if (isReadOnly)

{

provider = TypeDescriptor.AddAttributes(SelectedObject, new Attribute[] { new ReadOnlyAttribute(_readOnly) });

providedObject = SelectedObject;

}

else if (provider != null)

{

TypeDescriptor.RemoveProvider(provider, this.SelectedObject);

provider = null;

providedObject = null;

}

Refresh();

}

}

}

}