nav[aria-label="Primary Navigation"] { padding: 0; & ul { list-style: none; width: 100%; display: flex; flex-direction: row; justify-content: start; align-items: start; gap: 30px; padding: 0; & li { margin: 0; } & ul li { list-style: none; } } }

Expand/Collapse a toolbar

ShaningYu

I created a toolbar, e.g. the BaseMap Switch tool bar that allows me to switch from one basemap to another.   Then I created a control toolbar. By clicking a button, the BaseMap Switch toolbar can be either expanded or collapsed.

I wrote a piece of code (see below), but I don't know how to set the value for the BaseMap Toolbar's visibility (or something else).

If you have the experience, please share it with me. Thanks.

        private void SetTool(Button btn)
        {
            _Parent = (MainPage)System.Windows.Application.Current.RootVisual;
            _Parent.UnsetTool();
            btn.Background = (Brush)Application.Current.Resources["ButtonHighlightBrush"];
            _btnCurrentTool = btn;
            if (btn == btnMapSwitch)
            {
                //_Parent.MyBaseMaps.Visibility = "Collapse"; // can't be a string, what should be?
            }
            ...
         }

Finde mehr Beiträge mit dem Tag

Accepted answers

All comments

DominiqueBroux

<actions:ToggleVisibilityAction TargetName="MainPage.MyBaseMaps" />

I am not sure the parameter I set for the TargetName is correct.

TargetName must be a name declared in the same xaml file. In this case, your code should be :

<actions:ToggleVisibilityAction TargetName="MyBaseMaps" />

AFAIK there is no way to reference a name declared in another xaml file.

EtienneAraya

Problem solved. Closed.

Can you explain how solve this problem. I have similar issue.

Thank's

ShaningYu

Problem solved. Closed.

ShaningYu

Still got error. I run debug and receive NullReferenceException at the piece of code below
    public class ToggleVisibilityAction : TargetedTriggerAction<UIElement> {
        protected override void Invoke(object parameter)
        {
            this.Target.Visibility = this.Target.Visibility == Visibility.Visible ?
                Visibility.Collapsed : Visibility.Visible;
        }
    }
Because this.Target is Null. The related codes are below:
In MainPage.xaml
    <unb:SwitchMap x:Name="MyBaseMaps" ...
In Toolbar.xaml
   <actions:ToggleVisibilityAction TargetName="MainPage.MyBaseMaps" />

I am not sure the parameter I set for the TargetName is correct.
Thanks for you toview it and provide your feedback.

JenniferNery

It is actually very difficult to know where your app can be failing because I do not know the actual program flow. I would suggest putting a breakpoint to where you set _Map, if this code is not hit, then maybe SetMap is not called or the parameter, TheMap, is null.

ShaningYu

Tried
this._Map.Visibility = System.Windows.Visibility.Collapsed;
but receive NullReferenceException
since this._Map is null
Could you tell what is wrong in the following code:
        private MainPage _Parent;
        private Map _Map;
        public void SetParent(MainPage TheParent)
        {
            // Assumes that MainPage supports SetCursor and UnsetTool
            _Parent = TheParent;
        }

        public void SetMap(Map TheMap)
        {
            _Map = TheMap;
        }
Thanks.

JenniferNery

If you need to set the map's Visibility property, you can do the following (just as you would with any other UIElement)

 
this.MyMap.Visibility = System.Windows.Visibility.Collapsed;

where MyMap is the name of the map.
If you need a specific layer on your map to set it's Visible property, you can do the following:

this.MyMap.Layers["StreetMap"].Visible = false;

where "StreetMap" is the ID of the Layer that you need affected.

Nimm an der Unterhaltung teil

Angemeldete Mitglieder können Beiträge verfassen, Updates folgen und mehr. Neu hier? Registriere ein kostenloses Konto.

Schnellzugriffe

Community Help
Find useful guides, FAQs, and documents to help you navigate and make the most of Esri Community.