Why is not TabControl shown with its effect?
Have you ever seen how TabControl is shown when a window is opened? It is like a papyrus. It works in all my forms, however, it does nit work properly now.
How to make TabControl work correctly?
<TabControl Height=»420» HorizontalAlignment=”Left” Margin=”0,43,0,0” Name=”TabControl1” VerticalAlignment=”Top” Width=”553” Grid.ColumnSpan=”2”>
<TabItem Header=”Students” Name=”tabItem1”/>
</TabControl>
It is code of a window:
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="MainWindow" Height="350" Width="525" WindowStartupLocation=”CenterScreen”>
How to do it?
Related
I would like to add label above Syncfusion Datagrid but the label is hidden when I run the app in the following page.
See the following repos for complete app.
<ContentPage xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
x:Class="DataGrid.Views.OrderInfoRepositoryView"
xmlns:syncfusion="clr-namespace:Syncfusion.Maui.DataGrid;assembly=Syncfusion.Maui.DataGrid"
xmlns:local="clr-namespace:DataGrid"
Title="Order Info Repository View">
<ContentPage.BindingContext>
<local:OrderInfoRepositoryViewModel x:Name="viewModel" />
</ContentPage.BindingContext>
<ContentPage.Content>
<VerticalStackLayout Margin="20"
Spacing="10">
<Label Text="OrderInfo"
Margin="10,10,10,10"
TextColor="White"
BackgroundColor="Red"/>
<syncfusion:SfDataGrid x:Name="dataGrid"
ItemsSource="{Binding OrderInfoCollection}">
</syncfusion:SfDataGrid>
</VerticalStackLayout>
</ContentPage.Content>
Did try the following but same result.
<Label Text="OrderInfo"
Margin="10,10,10,10"
TextColor="White"
BackgroundColor="Red"/>
<syncfusion:SfDataGrid x:Name="dataGrid"
ItemsSource="{Binding OrderInfoCollection}">
</syncfusion:SfDataGrid>
</VerticalStackLayout>
Here Android screenshot
Added LineHeight and fontSize. No change
Tested with HeightRequest. No change.
It appears that you have set the Content for the ContentPage as DataGrid in OrderInfoRepositoryView.xaml.cs file. Please refer to the below file,
https://github.com/JeanMarcFlamand/MauiSyncFusionExamples/blob/master/DataGrid/Views/OrderInfoRepositoryView.xaml.cs#L12
You are adding the DataGrid as the content of the page in code behind i.e., OrderInfoRepositoryView constructor. That’s why the DataGrid alone is displaying without Label. We request that you remove the codes inside the OrderInfoRepositoryView constructor to overcome the issue.
I've noticed many apps have settings pages which have controls which behave like buttons, but don't look like buttons.
Anyone know what type of controls these are?
Specifically the one I am tapping on in the linked video file below:
Video example.
It's not a regular control but to do this in Maui you can use the Popup control to replicate a behaviour which is similar to what you just showed
Create a popup as shown here :
<toolkit:Popup xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
xmlns:toolkit="http://schemas.microsoft.com/dotnet/2022/maui/toolkit"
x:Class="MyProject.SimplePopup">
<VerticalStackLayout>
<Label Text="This is a very important message!" />
</VerticalStackLayout>
</toolkit:Popup>
Its cs file :
public partial class SimplePopup : Popup
{
public SimplePopup()
{
InitializeComponent();
}
}
And then use Radiobuttons from Maui to achieve the UI you need.
And for that effect use touch effects Its being ported to Maui at the moment though As far as I know (Not sure if works as a compatibility package)
I hope this helps!
It's a picker control, you can get more info here: https://learn.microsoft.com/en-us/dotnet/maui/user-interface/controls/picker
<StackLayout>
<Label Text="Theme"
Margin="0,25,0,5"
FontAttributes="Bold"/>
<Picker x:Name="picker"
Title="Select theme">
<Picker.ItemsSource>
<x:Array Type="{x:Type x:String}">
<x:String>Light</x:String>
<x:String>Dark</x:String>
<x:String>Black</x:String>
<x:String>Automatic (device theme)</x:String>
</x:Array>
</Picker.ItemsSource>
</Picker>
Android:
Android picker example
Windows: Windows picker example
I'm trying to build a UI where there's a small section that's always at the top of the page, and a small section that's always at the bottom. The middle section I want to have fill up the entire rest of the page height. I thought it would be something like the XAML below but it's not working - the middle section never fills up the available space. Was hoping someone could point out what I'm doing wrong. Simplified markup below:
<Grid RowDefinitions="60,*,60" ColumnDefinitions="*">
<HorizontalStackLayout Grid.Row="0" Grid.Column="0">
<!-- top stuff here -->
</HorizontalStackLayout>
<VerticalStackLayout Grid.Row="1" Grid.Column="0" VerticalOptions="Fill">
<!-- middle section here -->
</VerticalStackLayout>
<Grid Grid.Row="2" Grid.Column="0">
<!-- bottom section here -->
</Grid>
</Grid>
NOTE: When pasting into this question the editor strips out the closing <//Grid> tag.
When in doubt, use ..AndExpand to be sure all space is used.
<Grid RowDefinitions="60,*,60" ColumnDefinitions="*"
VerticalOptions="FillAndExpand" >
...
<VerticalStackLayout Grid.Row="1" VerticalOptions="FillAndExpand" ...
UPDATE
Actually, your original code does what it should for me, testing on both Windows and Android, when I set MainPage = new MainPage(); and have that code in MainPage. With a BackgroundColor on the middle part, so I can see it expand as desired.
So, what is different in your setup?
Are you using AppShell?
Testing on platform other than Windows or Android?
You didn't test the "simplified markup" you show, so the problem is elsewhere in your actual markup?
I developed one app about months ago with Prism. It's great tool that make perfect structure for my app.
However, today I tried to pick up that app and fix some things that pending for a long time. I used Master Detail page in my app, and today I suddenly found that actually the structure for how I developed this Master Detail page using Prism is kind of out of my knowledge.
So, here it is.
Basically my MasterDetailPage is like this:
<?xml version="1.0" encoding="utf-8" ?>
<MasterDetailPage xmlns="http://xamarin.com/schemas/2014/forms"
xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
xmlns:d="http://xamarin.com/schemas/2014/forms/design"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:b="clr-namespace:Prism.Behaviors;assembly=Prism.Forms"
mc:Ignorable="d"
x:Class="JapaneseLearnPrism.Views.MenuPage">
<MasterDetailPage.Master>
<NavigationPage Title="Menu" Icon="ic_hamburger.png">
<x:Arguments>
<ContentPage Title="{Binding Title}">
<ListView ItemsSource="{Binding MenuItems}"
SelectedItem="{Binding SelectedMenuItem, Mode=TwoWay}"
SeparatorColor="LightGray"
RowHeight="60"
SeparatorVisibility="Default"
BackgroundColor="#e8e8e8">
<ListView.ItemTemplate>
<DataTemplate>
<ViewCell>
<StackLayout VerticalOptions="FillAndExpand"
Orientation="Horizontal"
Padding="20,10,0,10"
Spacing="20">
<Label Text="{Binding PageIconText}" FontFamily="{StaticResource FontAwesomeSolid}" FontSize="Medium" VerticalOptions="Center" />
<Label Text="{Binding Title}" FontSize="Medium" VerticalOptions="Center" TextColor="Black" />
</StackLayout>
</ViewCell>
</DataTemplate>
</ListView.ItemTemplate>
<ListView.Behaviors>
<b:EventToCommandBehavior EventName="ItemTapped" Command="{Binding NavigateCommand}" />
</ListView.Behaviors>
</ListView>
</ContentPage>
</x:Arguments>
</NavigationPage>
</MasterDetailPage.Master>
</MasterDetailPage>
And the navigation path is this in App.xaml.cs file.
await NavigationService.NavigateAsync(nameof(MenuPage) + "/" + nameof(NavigationPage) + "/" + nameof(Views.MainPage));
But if I look at lots of the Xamarin.Forms samples, the MasterDetailPage is actually different.
They are going to do like below:
<MasterDetailPage xmlns="http://xamarin.com/schemas/2014/forms"
xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
xmlns:local="clr-namespace:MasterDetailPageNavigation;assembly=MasterDetailPageNavigation"
x:Class="MasterDetailPageNavigation.MainPage">
<MasterDetailPage.Master>
<local:MasterPage x:Name="masterPage" />
</MasterDetailPage.Master>
<MasterDetailPage.Detail>
<NavigationPage>
<x:Arguments>
<local:ContactsPage />
</x:Arguments>
</NavigationPage>
</MasterDetailPage.Detail>
</MasterDetailPage>
And that's from Microsoft's official website. The Master Page in above is actually just one ContentPage, however, the Detail page should be NavigationPage, that one I can understand because it makes sense.
However, in my Prism app, the MasterPage also has to be a NavigaionPage, why is that? Any one can help on this?
Thanks.
You can take a look at this wonderfull blog about How to make Master-Detail Page Navigation menu in Xamarin Forms with Prism.
If you scroll down to the bottom of the post, you will see some description on why it works this way, Quoting:
Note: Navigation in Prism is all based on this url format where we can define to which pages we want to go, and it can be something like this: ViewA/ViewB/ViewC/ViewD
... and if you remember we are inside of MasterDetail page so navigating from MasterDetail will get result that those pages will go to Detail part of it... and that is great for us, we have menu in side of master page and choosing menu items will open pages as Detail pages.
The way that Prism Navigation is designed, it makes sense that a DetaiPage goes inside the MasterDetail, so basically it keeps the Prism Logic of doing the Navigation.
Quoting the Basics of Prism Navigation
Navigating in a Prism application is conceptually different than standard navigation in Xamarin.Forms. While Xamarin.Forms navigation relies on a Page class instance to navigate, Prism removes all dependencies on Page types to achieve loosely coupled navigation from within a ViewModel. In Prism, the concept of navigating to a View or navigating to a ViewModel does not exist. Instead, you simply navigate to an experience, or a unique identifier, which represents the target view you wish to navigate to in your application.
I am working on Window phone 8.1.
I have a RelayCommand command which executes some method async.
I want to know how can I bind a page load event from a page to the RelayCommand in the view model?
All the example I see are binding RelayCommand to a Button.
How can I bind that to page load event? I see some example uses EventToCommand. But I am using Window phone 8.1, I dont' think I have the behaviour stuff some article I saw.
Make sure you add Behaviors extension to your References
then define that the event trigger invokes a command:
<Page
x:Class="App31.PivotPage"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="using:App31"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:data="using:App31.Data"
xmlns:i="using:Microsoft.Xaml.Interactivity"
xmlns:core="using:Microsoft.Xaml.Interactions.Core"
mc:Ignorable="d">
<i:Interaction.Behaviors>
<core:EventTriggerBehavior EventName="Loaded">
<core:InvokeCommandAction Command="{Binding MyCommandInTheViewModel}" />
</core:EventTriggerBehavior>
</i:Interaction.Behaviors>
//....
//.. rest of page code
Where MyCommandInTheViewModel is the command in your VM, and the DataContext of the page is set to your VM.