This message was discovered on microsoft.public.dotnet.framework.windowsforms.designtime.
| gurjinder |
Hi,
I am making a form designer. It is same like VS.net IDE.
I am facing difficulty in adding Eventstab to propertygrid control.
In some forums it is mentioned that just assign some Site to sIte
property of propertygrid and then just do
grid.propertytabs.addtabtype(typeof(eventstab),PropertyTabScope.Component));
but this is not working .........
can any body help.....
rgds
Gurjinder
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| Paul |
| GOOD ANSWER |
Hi, Gurjinder.
When I develop my design-time form, I use following code:
// There is a class to show EventTab in PropertyGrid
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);
}
public bool DrawFlat
{
get { return DrawFlatToolbar; }
set { DrawFlatToolbar = value; }
}
}
and add next code to your code
....
private MyPropertyGrid propertyGrid;
....
// Initialization PropertyGrid
this.propertyGrid = new MyPropertyGrid();
....
this.propertyGrid.SelectedObjectsChanged += new EventHandler(OnPropertyGridSelectedObjectChanged);
this.propertyGrid.SelectedGridItemChanged += new SelectedGridItemChangedEventHandler(OnSelectedGridItemChanged);
....
protected void OnPropertyGridSelectedObjectChanged(object sender, EventArgs e)
{
UpdatePropertyGridSite();
this.propertyGrid.ShowEvents(true);
}
private PropertyDescriptor lastProperty;
private object lastValue;
private void OnSelectedGridItemChanged(object sender, SelectedGridItemChangedEventArgs e)
{
GridItem gridItem = e.NewSelection;
if (gridItem != null && (lastProperty = gridItem.PropertyDescriptor) != null)
{
Object selectedObj = this.propertyGrid.SelectedObject;
if (selectedObj != null)
{
try
{
lastValue = lastProperty.GetValue(selectedObj);
lastProperty.AddValueChanged(selectedObj, new EventHandler(OnPropertyChanged));
}
catch {}
}
}
}
....
protected void UpdatePropertyGridSite()
{
if(propertyGrid != null)
{
propertyGrid.Site = null;
IServiceProvider provider = GetPropertyGridServiceProvider();
if(provider != null)
{
propertyGrid.Site = new MySite(provider, propertyGrid as IComponent);
propertyGrid.PropertyTabs.AddTabType(typeof(System.Windows.Forms.Design.EventsTab));
}
}
}
protected IServiceProvider GetPropertyGridServiceProvider()
{
object selObject = null;
if (propertyGrid.SelectedObjects != null && propertyGrid.SelectedObjects.Length > 0)
selObject = propertyGrid.SelectedObjects[0];
else
selObject = propertyGrid.SelectedObject;
if (selObject is Component)
return (selObject as Component).Site;
return null;
}
I hope, I help you.
If you'll have some questions, you welcome.
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| Krishnan Vijay Anand |
| GOOD ANSWER |
Hi I was trying to use Your code to add the Events Tab to Property Grid. Can you send me the sample code to add the event icon on the property grid. Please do the needful.
Thanks and Regards
--------------------------------
From: Krishnan Vijay Anand
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