Re: Updating verbs in the PropertyGrid

From: Jer_m (jmghost_at_msn.com)
Date: 10/26/04

  • Next message: joeycalisay: "DefaultValue Property and Inheritance" 
    Date: 25 Oct 2004 19:51:50 -0700

    Hi Jacob,

    I had the same problem, maybe someone else can shed some light on
    this....

    in the meantime, I have been able to get ISelectionService to work.
    Is this how your doing it?

    DesignerVerb verbTestOn;
    DesignerVerb verbTestOff;

    public override initialize(IComponent component)
    {
        verbTestOn = new DesignerVerb("Test On",new EventHandler(TestOn));
        verbTestOff = new DesignerVerb("Test Off",new
    EventHandler(TestOff));

        Verbs.Add(verbTestOn);
    }

    private void TestOn(object sender, EventArgs e)
    {
        Verbs.Remove(verbTestOn);
        Verbs.Add(verbTestOff);

        ISelectionService ss =
    (ISelectionService)GetService(typeof(ISelectionService));

        ss.SetSelectedComponents(new IComponent[] { this.Control.Parent }
    );
        ss.SetSelectedComponents(new IComponent[] { this.Control } );
    }

    private void TestOff(object sender, EventArgs e)
    {
        Verbs.Add(verbTestOn);
        Verbs.Remove(verbTestOff);

        ISelectionService ss =
    (ISelectionService)GetService(typeof(ISelectionService));

        ss.SetSelectedComponents(new IComponent[] { this.Control.Parent }
    );
        ss.SetSelectedComponents(new IComponent[] { this.Control } );
    }

    kind regards
    Jerron

    "Jacob" <js@hotmail.com> wrote in message news:<edmWiq$tEHA.220@TK2MSFTNGP15.phx.gbl>...
    > Thank you for your great answer, but it's a solution to a little bit
    > different problem. I've had no problems, enabling/disabling and setting the
    > verbs to visible/invisible. The problem is ADDING verbs and REMOVING verbs
    > from the collection. The changes made to the collection don't seem to get
    > updated until after the control is deselected and reselected again. I poked
    > around some things with Reflector and found that the PropertyGrid keeps its
    > own array of verbs, different from the collection that is edited in the
    > ControlDesigner. That seems to be the problem. The PropertyGrid's array
    > doesn't get updated when a property is changed on the control and the
    > control is still selected until after you deselect it and reselect it again.
    > Do you have an answer for this one?
    >
    > Jacob
    >
    > P.S. - I've tried using the ISelectionService to deselect all controls and
    > reselect my control after the control's property is changed but it still
    > won't update the PropertyGrids verbs unless you deselect and reselect
    > yourself.
    >
    >
    > "Joey Calisay" <hcalisay@codex-systems.com> wrote in message
    > news:eE7M4QxtEHA.2804@TK2MSFTNGP14.phx.gbl...
    > >I forgot to include the key thing: utilize the ISelectionService and
    > >provide
    > > an eventhandler for its SelectionChanged. When your control is selected,
    > > refresh the designerverbs:
    > >
    > > private void OnSelectionServiceSelectionChanged(object sender, EventArgs
    > > e)
    > >
    > > {
    > >
    > > ISelectionService ss = GetService(typeof(ISelectionService)) as
    > > ISelectionService;
    > >
    > > if (ss.SelectionCount == 1 && ss.PrimarySelection is
    > > CdxTabControlAdvanced)
    > >
    > > {
    > >
    > > this.ModifyMenu();
    > >
    > > }
    >
    > > }
    > >
    > >
    > >
    > > Added wireups on the Initialize method of the designer:
    > >
    > >
    > >
    > > IDesignerHost host = GetService(typeof(IDesignerHost)) as IDesignerHost;
    > >
    > > ISelectionService ss = GetService(typeof(ISelectionService)) as
    > > ISelectionService;
    > >
    > > if (ss != null)
    > >
    > > {
    > >
    > > ss.SelectionChanged +=new
    > > EventHandler(e_OnISelectionServiceSelectionChanged);
    > >
    > > }
    > >
    > >
    > > sorry for the mess...
    > > "Joey Calisay" <hcalisay@codex-systems.com> wrote in message
    > > news:eW1qXJxtEHA.3200@TK2MSFTNGP09.phx.gbl...
    > >> you just have to have a reference of the designerverbs on the designer
    > class
    > >> level to modify their properties on your OnComponentChanged eventhandler
    > >>
    > >> public class CdxTabControlAdvancedDesigner :
    > >> System.Windows.Forms.Design.ParentControlDesigner
    > >>
    > >> {
    > >>
    > >> private DesignerVerb m_verbRemoveTab = null;
    > >>
    > >> private DesignerVerb m_verbAddTab = null;
    > >>
    > >> private void OnComponentChanged(object sender, ComponentChangedEventArgs
    > e)
    > >>
    > >> {
    > >>
    > >> //Modify the designerverbs here
    > >>
    > >> if (e.Component = this.Component) this.ModifyMenu();
    > >>
    > >> }
    > >>
    > >> protected virtual void ModifyMenu()
    > >>
    > >> {
    > >>
    > >> m_verbRemoveTab.Enabled = false;
    > >>
    > >> if (this.CdxTabControlAdvanced.aaTabButtons.Count > 0)
    > >>
    > >> {
    > >>
    > >> m_verbRemoveTab.Enabled = true;
    > >>
    > >> }
    >
    > >> }
    > >>
    > >> public CdxTabControlAdvancedDesigner()
    > >>
    > >> {
    > >>
    > >> this.m_verbAddTab = new DesignerVerb("Add Tab", new
    > >> EventHandler(this.e_OnAddTab));
    > >>
    > >> this.m_verbRemoveTab = new DesignerVerb("Remove Tab", new
    > >> EventHandler(this.e_OnRemoveTab));
    > >>
    > >> base.Verbs.AddRange(new DesignerVerb[] {this.m_verbAddTab,
    > >> this.m_verbRemoveTab});
    > >>
    > >> }
    > >>
    > >> protected override void Dispose(bool bIsDisposing)
    > >>
    > >> {
    > >>
    > >> IComponentChangeService cs = GetService(typeof(IComponentChangeService))
    > as
    > >> IComponentChangeService;
    > >>
    > >> if (cs != null)
    > >>
    > >> {
    > >>
    > >> cs.ComponentChanged -=new
    > ComponentChangedEventHandler(OnComponentChanged);
    > >>
    > >> }
    > >>
    > >> base.Dispose(bIsDisposing);
    > >>
    > >> }
    > >>
    > >> public override void Initialize(IComponent Icomponent)
    > >>
    > >> {
    > >>
    > >> base.Initialize(Icomponent);
    > >>
    > >> IComponentChangeService cs = GetService(typeof(IComponentChangeService))
    > as
    > >> IComponentChangeService;
    > >>
    > >> if (cs != null)
    > >>
    > >> {
    > >>
    > >> cs.ComponentChanged +=new
    > ComponentChangedEventHandler(OnComponentChanged);
    > >>
    > >> }
    > >>
    > >> ModifyMenu();
    > >>
    > >> }
    >
    > >> }
    > >>
    > >> "Jacob" <js@hotmail.com> wrote in message
    > >> news:eA$aAwrtEHA.1336@TK2MSFTNGP10.phx.gbl...
    > >> > I'm working on a component (with a custom designer) where the designer
    > verbs
    > >> > change based on what a property is set to. The problem is,... it
    > >> > appears
    > >> > that the designer keeps its own cache of the verbs such that when I
    > change
    > >> > the property of my component, I have to click off the component and
    > >> > then
    > >> > back onto it to update the verb links listed in the PropertyGrid. I
    > can't
    > >> > explain it any simpler than that. If you've tried to dynamically change
    > the
    > >> > verbs before, changing the context menu verbs is easy, but changing the
    > >> > links in the property grid without reselecting the component is proving
    > to
    > >> > be very difficult. Anybody have the answer?
    > >> >
    > >> >
    > >> > Thanks,
    > >> > Jacob
    > >> >
    > >> >
    > >> > P.S. - Some sample code...
    > >> >
    > >> > internal class MyCustomDesigner : ControlDesigner
    > >> >
    > >> > {
    > >> >
    > >> >
    > >> >
    > >> >
    > >> >
    > >> > public override DesignerVerbCollection Verbs
    > >> >
    > >> > {
    > >> >
    > >> >
    > >> >
    > >> > get
    > >> >
    > >> > {
    > >> >
    > >> > DesignerVerbCollection verbs = new DesignerVerbCollection();
    > >> >
    > >> > // Adding of custom verbs here....
    > >> >
    > >> > return verbs;
    > >> >
    > >> > }
    >
    > >> > }
    > >> >
    > >> >
    > >> >
    > >> > public override void Initialize(IComponent component)
    > >> >
    > >> > {
    > >> >
    > >> >
    > >> >
    > >> > base.Initialize(component);
    > >> >
    > >> > // Be notified when properties are changed.
    > >> >
    > >> > IComponentChangeService service = GetService(
    > >> >
    > >> > typeof(IComponentChangeService)) as IComponentChangeService;
    > >> >
    > >> > if(service != null)
    > >> >
    > >> > service.ComponentChanged +=
    > >> >
    > >> > new ComponentChangedEventHandler(OnComponentChanged);
    > >> >
    > >> > }
    > >> >
    > >> >
    > >> >
    > >> > #region Private Methods
    > >> >
    > >> > private void OnComponentChanged(object sender,
    > >> > ComponentChangedEventArgs
    > e)
    > >> >
    > >> > {
    > >> >
    > >> > if(e.Component == this.Component && e.Member != null && e.Member.Name
    > >> > ==
    > >> > "Icon")
    > >> >
    > >> > {
    > >> >
    > >> > // This is where I want to change the verbs displayed.
    > >> >
    > >> >
    > >> >
    > >> > }
    >
    > >> > }
    > >> >
    > >> >
    > >> >
    > >> > }
    > >> >
    > >> >
    > >>
    > >>
    > >
    > >

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