I would like to know if there's a way to implement a responsive Master/Detail page using only one. What I want is something exactly like the Project here:
https://github.com/Microsoft/Windows-universal-samples/tree/master/Samples/XamlMasterDetail
Except for the detail that instead of using two pages and navigating from one to another I would only use one page.
Is there a way to do it? If so, could you link me a working example?
Except for the detail that instead of using two pages and navigating from one to another I would only use one page.
After going through the project, I found it implemented a responsive master/detail experience based on the size of the screen. When the app view is sufficiently wide, the master list and detail view should appear side by side in the same app page. However, on smaller screen sizes, the two pieces of UI should appear on different pages, allowing the user to navigate between them. From my point of view, I think this is a good solution for implementing a responsive master/detail experience.
Is there a way to do it? If so, could you link me a working example?
The project already shows how to implement responsive Master/Detail in UWP using only one page, but it implements more and that makes it a little complex to understand. So I make a simple example which directly shows how to implement responsive Master/Detail in UWP using only one page.
Following is the main steps:
First, create a ListView to show master information in xaml page:
<!--Master VIEW-->
<ListView x:Name="ItemListView" Margin="0,0,0,8">
<ListView.ItemTemplate>
<DataTemplate>
<StackPanel HorizontalAlignment="Left" Margin="10,8,0,0">
<TextBlock Text="{Binding Title}" FontSize="25" Width="400" />
</StackPanel>
</DataTemplate>
</ListView.ItemTemplate>
</ListView>
Second, specify the details view that shows the details item related to the selection on the master list in the same xaml page:
<!--DETAILS VIEW-->
<StackPanel Grid.Column="1" x:Name="ContentPanelDetail" Margin="10,0,0,0" DataContext="{Binding SelectedItem, ElementName=ItemListView}">
<TextBlock Text="{Binding Title}" MaxHeight="80" FontSize="30" HorizontalAlignment="Left" Margin="0" />
<TextBlock x:Name="DetailTextBlock" FontSize="35" Text="{Binding Content}" HorizontalAlignment="Left" Margin="0,18,40,0" Width="500" Height="Auto" TextWrapping="Wrap" />
</StackPanel>
Then, set the ItemsSource for the ListView in code behind:
public MainPage()
{
this.InitializeComponent();
//set the ItemsSource for the ListView
ItemDetails messageData = new ItemDetails();
ItemListView.ItemsSource = messageData.Collection;
ItemListView.SelectedIndex = 0;
}
Last but not least, put Master View and Details View into a SplitView and use VisualStateManager to make it more responsive.
Here is the simple example and the output for your reference.
To implement Master/Detail pattern on your page, you don't have to do it yourself. Instead you can use MasterDetailsView control from UWP Community Toolkit, it does a lot work for you + it is well documented.
Note: For details section of the control, do not set background to null (NoSelectionContent will be visible).
Related
I am developing plain WPF application on top of .NET 5.0.
I have navigation mechanism implemented based on DataTemplate(s)
<DataTemplate DataType="{x:Type viewmodels:FirstViewModel}">
<views:FirstView />
</DataTemplate>
<DataTemplate DataType="{x:Type viewmodels:SecondViewModel}">
<views:SecondView />
</DataTemplate>
and CurrentViewModel
<ContentControl Grid.Row="1" Content="{Binding CurrentViewModel}" VerticalAlignment="Stretch" HorizontalAlignment="Stretch" />
You can imagine there are navbar buttons changing the CurrentViewModel property.
Besides that I use Dependency Injection which provides all required services (including viewmodels).
Both FirstViewModel and SecondViewModel are singletons.
FirstView and SecondView are UserControl(s).
The problem:
Whenever I navigate between UserControls they re-render. This is very inconvinient, from performance perspective and application usability.
Let's say both UserControls have grids with searching features and more. I would like user to be able to navigate back to the same state which he left on the control (including focused elements and so on). Having singleton viewmodel allows to preserve state/values of the properties but it doesn't solve the problem of control being re-rendered whenever I navigate. I clearly see that each time FirstView constructor is being called on which it InitializeComponent() and later calls OnRender().
Grids have asynchronous Sources.
<DataGrid Style="{DynamicResource DataGridStyle}" ItemsSource="{Binding ActiveSearchResults, IsAsync=True}" AutoGenerateColumns="False" CanUserSortColumns="True" CanUserAddRows="False">
.
.
.
</DataGrid>
I don't want grid to be re-rendered each time I navigate and elements to lose their focus. When I navigate I also see the grid flikering.
Can you please suggest option I have?
Is it possible to have singleton UserControl?
Is it possible to have static property with a cached state?
This is what my main program GUI will look like, what I am attempting to do, is to create a reminder application in C# using wpf.
I am going to use a scroll viewer which is going to be displaying the data to the user, namely the reminders they currently have.
Each time the user adds a reminder, it will add this:
What I am wanting to do is that, when ever the user add's a new reminder, there will be a new set of data added to the scrollviewer.
What would be the best way of achieving this?
Am I able to hold the xaml data and add it during execution?
Thanks for the help
What you want to do can be accomplished not by dynamic Xaml, but by the use of a templated control which can accept dynamic data. For example you wouldn't consider using a listbox for your labels because you are not showing the data in a list right?
But a listbox is just a conveyor belt for what you want to achive. Say you want more than a label, how about three labels. Via binding to a proper structure you can get what is needed.
Here is an example
<ListBox ItemsSource="{Binding myReminders }">
<ListBox.ItemTemplate>
<DataTemplate>
<StackPanel>
<TextBlock Text="{Binding Path=ReminderName}" />
<TextBlock Text="{Binding Path=Description}"/>
<TextBlock Text="{Binding Path=Priority}"/>
</StackPanel>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
Once that is bound to a list of my reminder data objects (which the list can dynamically change), we have the ability to show the reminders in any format we want. One just uses the above to style it appropriately. (Check out WPF's Templating Overview for a great example).
The use of templates is done in other controls, so if the listbox is not to your liking, look into other templated controls.
I heed to create wizard and in the wizard I have tab control which have to call to the user control according to the context,I need to create the wizard which will able to invoke
different pages according to the user selection ,currently I call to the pages as follows which I think is not the right way,any Idea how should I do it via code (not in the xaml )i.e. according to some decision invoke the suitable page to the tab control.
this is the xaml:
<Border Grid.Column="1" Name="MainBorder">
<TabControl x:Name="MainTabControl" Height="638" VerticalAlignment="Bottom">
<TabItem Visibility="Collapsed" >
<Frame Source="page1.xaml" />
</TabItem>
<TabItem Visibility="Collapsed" >
<Frame Source="page2.xaml"/>
</TabItem>
<TabItem Visibility="Collapsed" Header="Step 3">
<TextBlock Text="Page 3"/>
</TabItem>
<TabItem Visibility="Collapsed" Header="Step 4">
<TextBlock Text="Page 4"/>
</TabItem>
</TabControl>
</Border>
UPDATE
I was tried in the main window like the following without success
create new tab by code and add to it the page 1 and then add it to the MainTabControl
TabControl tabControl = new TabControl(new Page1());
MainTabControl.add..
.
there is no add in the main tab control
For this scenario, I would use a Frame rather that tabs. The frame allows you to manage the flow of it's content via the NavigationService. You can use Uri's to display a page via the Frame.Source property, or a FrameworkElement via the Frame.Content property. Both are DependencyProperties and can therefore be bound to.
Paul Stovel wrote an excellent blog on this called WPF Navigation. Everything you need to create a wizard from a frame can be found in this blog, including passing values between pages and templating of the Frame to simply handle the display of navigation buttons.
I would agree with Mark, it is a lot easier to use NavigationWindows than TabControls.
I've worked on a lot of interfaces like this and written up some of the basic things with,
WPF Wizards, Part 1
WPF Wizards, Part 2
Then more recently I worked out how to get the styling just right
Styling Wizards
In fact I've released the styling and examples as open source at
WinChrome
There is some simple example code including use of a navigation list to the left with,
WinChrome.Win7Demo
Hope this helps
I am trying to build a 'comments control' (In a win8 XAML app, which is similar to Silverlight) which will load and render a comment tree for the user.
Each comment can have 0 or 1+ children comments (which recurses through each comment).
Each comment displays a set of info, including author, time, the comment itself, etc.
The approach I initially took to build this is to use a ListView which has a 'CommentItem' control binding.
<TextBlock Grid.Row="1" TextWrapping="Wrap" Text="{Binding commentText}" FontSize="11" FontFamily="Global User Interface" />
<ListView Grid.Row="2" x:Name="CommentRepliesList" ItemsSource="{Binding}" >
<ListView.ItemTemplate>
<DataTemplate>
<local:CommentItem Tag="{Binding}"></local:CommentItem>
</DataTemplate>
</ListView.ItemTemplate>
</ListView>
The above will just recurse through each comment, apply the comment text, and then create a new commentitem for each comment child, recurse through again, etc.
The issue, however, is this is extremely slow and non-performant.
Does anyone know a more efficient way to do this? Is ListView the appropriate control to use for this?
I'm learning WPF, so bear with me.
I would like to have my WPF application flash in the user's face if a certain event is fired.
What is the best way to "notify" the user? I really want the user to react!
Cheers, Patrick
Environment: Windows7/64bit/.Net4
If you want the user to react you can force them to by simply opening a modal dialogue. The most lightweight of which being the MessageBox. You can also create normal modal windows using their ShowDialog method, you can make those windows as "fancy" as you want by getting rid of their normal appearance. This is achieved by setting the WindowStyle to None and AllowsTransparency to true, this will remove all the frame elements, so the window is now pure content.
Popups are handy for non-modal notifications and they already are content-only, but setting their AllowsTransparency to true may also be desired if you want rounded corners for example.
Best is entirely subjective and depends on many context variables but here is how I do it MVVM style.
In your main view model, define a property
pubic ObservableCollection<AlertViewModel"> Alerts { get; private set; }
in my case the AlertViewModel has only a "Message" property and a "Dismiss" RelayCommand.
In the XAML of your main view add
<Grid>
<all of my other other view controls>
<ItemsControl x:Name="AlertsControl" Opacity="50" ItemsSource="{Binding Alerts}"/>
</Grid>
Make sure it is the last item in the main container of your main view. This ensures it has the highest z order and will appear on top of all other controls.
Here is the data template for this view model
<DataTemplate DataType="{x:Type vm:AlertViewModel}">
<Border CornerRadius="10" Margin="3" Background="Red">
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="75"></ColumnDefinition>
<ColumnDefinition></ColumnDefinition>
</Grid.ColumnDefinitions>
<Button Margin="10" Grid.Column="0"
Command="{Binding ElementName=theWindow, Path=DataContext.DismissAlarmCommand}"
CommandParameter="{Binding}">Dismiss</Button>
<TextBlock Foreground="White" FontWeight="ExtraBold" Grid.Column="1"
Text="{Binding Message}" FontSize="20"
VerticalAlignment="Center" HorizontalAlignment="Left"></TextBlock>
</Grid>
</Border>
</DataTemplate>
Now,
Alerts.Add( new AlertViewModel() { Message = "Danger Will Robinson! Danger!" } );
Will pop a Bright red alert box onto the top of your main form. It does not go away until the user presses "Dismiss"
If you want it to flash or fade in and out or bounce up and down you can add animation in the data template.
You can use a Converter or data to Enable/Disable the rest of the controls in the app byt binding to AlertsControl.HasItems
Good luck.