Is it possible to open another Window in a TabControl's TabItem?
The reason I want to do this is that if I have 5 TabItems in my TabControl, the one Window file I'm coding all these TabItems and their associated actions will get very large. So it would be nice if it was possible to to give each TabItem its own Window file.
Or how do you solve the problem where theWindow file controlling the TabControl gets too large?
<Window ...
xmlns:local="clr-namespace:MyNamespace"
>
<TabControl>
<TabItem Header="FirstTab">
<local:MyFirstTabUserControl/>
</TabItem>
<TabItem Header="SecondTab">
<local:MySecondTabUserControl/>
</TabItem>
<TabItem Header="ThirdTab">
<local:MyThirdTabUserControl/>
</TabItem>
</TabControl>
</Window>
Your each TabUserControl is actually simple UserControl, since TabItem can host any control as its own child.
You have several choices:
add one or more resource dictionaries to your app that contain resources with templates and styles for the various views you host in your tabs. This approach works well if you just need to maintain separation of the visual trees only.
create user controls for each view (with own XAML and class file) and use one instance for each different view in the tabs. This approach allows you to encapsulated specific business logic and the corresponding visual tree together.
generate some of the UI from code. This one has no advantages, except t makes you XAML smaller. And is your .cs files become too big, you can always split them in multiple code files and use partial classes. (just had to throw in this one for completeness :-))
You can also set the TabItem Content equals to your Window content
ex: [WindowType is your window]
WindowsType oWindow = new WindowType();
TabItem oTab = new TabItem();
oTab.Content = oWindow.Content;
Make a UserControl for each TabItem.
You can use a UserControl as was mentioned already.
But you can also use the Page control. Each "Window" would be a page, and the tab would have a NavigationControl in it. I've used this approach before and it works well. I prefer the UserControl route, but both are valid.
Related
I have multiple window files and i want to merge my Xaml files(window) into a Tab control in a MVVM Pattern.
Each item Tab will represents a Xaml file.
i need something like this:
<TabControl >
<TabItem>
<local:FirstView></local:FirstView>
</TabItem>
<TabItem>
<local:SecondView></local:SecondView>
</TabItem>
</TabControl>
but i get this Error:
"Window must be the root of the tree. Cannot add Window as a child of Visual."
I have seen many topics like this but they use user control or they use a single view with multiple View Model.
Is there any way to import window(xaml) into tab control?
And another important thing, i want to have a button like Cancel, Pushing Cancel means we have to go back one level(go to another tab Item).
view model is not aware of view, so how can i navigate through them?
Is there any way to import window(xaml) into tab control?
No, there isn't. A System.Windows.Window cannot be a child of another System.Windows.Window.
The contents of the tab items should be defined as UserControls.
You should just be able to move the contents of your windows to the user controls.
Based on this mechanism, I created a dialog window of which I can dynamically assign the content by a <ContentPresenter Content="{Binding .}">
The content I want to assign is an user control with a corresponding ViewModel. This works as I can render the DialogView in other usercontrols
<DataTemplate DataType="{x:Type ViewModels:DialogViewModel}">
<Views:DialogView/>
</DataTemplate>
)
However, in the DialogWindow, DialogView cannot be rendered but instead, only the string representation of DialogViewModel is visible. What might be the reason why I cannot render the view of contentpresenter's content?
Any help is much appreciated!
Thanks in advance
Where did you define the Data Template? It sounds like you are creating them as Window resources, and did not include it in your DialogWindow. If you're defining them as Window resources, the Data Template definition needs to be included on every Window you want to render this way. If the ViewModel/View pair is global to the application, it is easier to just define it in the App.xaml where it will be picked up by any Window or UserControl throughout the application.
I have a sidebar in an application I am writing that displays information about the application's state to the user. In certain cases, the user can hover over various elements in the sidebar to view more specific details. These details are shown to the user using a control that mimics the behavior of Bootstrap's Popover control. I accomplish this using an invisible Canvas overlay that spans the entire window, and the "Popover" itself is placed relatively on this Canvas using computed Canvas.Left and Canvas.Top properties.
Here's a (very simplified) look at the current XAML of my application:
<Window>
<Grid x:Name="container">
<.. a lot of various nested elements ..>
<StackPanel x:Name="sidepanel">
.. content of the sidepanel control ..
</StackPanel>
</.. a lot of various nested elements ..>
<Canvas x:Name="overlay">
.. content of the Popover control ..
</Canvas>
</Grid>
</Window>
This works great, except that I'd like to refactor this functionality into a single control. However, I'm not sure how to proceed - if the custom UserControl includes the Canvas overlay in its XAML definition, I'll be unable to position the sidepanel portion of the control in the same way as it currently is positioned within the application. However, the Canvas overlay can't be nested inside of the sidepanel, as it needs to span the entire window in order to operate properly.
Is there a way to define a single UserControl that can sit in different parts of the logical tree? Or is there a better way to accomplish this effect?
You can't split a single UserControl into different places in the logical tree, but you can inject other code into a Control and place it around the internal components it defines. This is the model used by HeaderedContentControl: two content properties, Content and Header, which are injected into two different ContentPresenters in the control's template. Hence things like Expander and TabItem with externally defined content in multiple locations around intrinsic parts of the controls. In the case of a UserControl you would be placing them in the main XAML instead of a template so the bindings are a little different but the principle is the same.
Define two Dependency properties of type object on your UserControl and then bind those into ContentPresenters placed in the exact spots where you have "a lot of various nested elements" in your sample. Then when you use the UserControl you can just define whatever other elements you want under the UserControl element inside like <MyUserControl.MyContentProperty1> tags and they'll get placed inside your UserControl content.
i want to use a usercontrol, (set of TextBlock & Combobox). I want 3 instance of it in the same, page. So how can I define such usercontrol in the same page's xaml? need to use page resource? or anything else?
Within Visual Studio you can define UserControls by going to Project --> Add New Item and selecting User Control. After defining it there you can then add a reference to it in the XAML of the page you want to use it in. You do this by adding a something along the lines of the following to the root tag of your page.
<common:LayoutAwarePage
...
xmlns:CustomControlName="using:CustomControlNamespace"
...>
If you have to do it in the same XAML document, I guess you could define the control in the pages resources
<Page.Resources>
<UserControl x:Name="CustomControl">
...
</UserControl>
</Page.Resources>
Personally I would define a UserControl in a separate file. It separates things out and Visual Studio also gives you some basics to work from.
I'm looking for a way to create an application layout for a little tool that looks like the ESET Antivirus UI:
I thought, that I take a TabControl and do a complete Restyling on this whole thing. I created a basic tab layout:
<Grid Background="White" Grid.Row="1" >
<TabControl TabStripPlacement="Left">
<TabItem Header="Dashboard">
<Grid>
</Grid>
</TabItem>
<TabItem Header="Projects">
<Grid>
</Grid>
</TabItem>
<TabItem Header="Settings">
<Grid>
</Grid>
</TabItem>
<TabItem Header="Help & Info">
<Grid>
</Grid>
</TabItem>
</TabControl>
</Grid>
However, I don't have the slightest clue how to get the tabs the way I'd like them to be. I tried a lot with Blend to get the Tabs look the image above, but I don't get it. The triangle would be a nice to have, but the highlighting should be adapted.
Any advice?
Whenever you are having trouble with trying to make WPF UI elements look exactly the way you want, you should go find the default <style> XAML from microsoft and try modifying that directly in your project until you get the desired result.
In case that wasn't clear, you you need to do is follow the links below, copy the style from the pages and put them into the Resources section of your window (or App.xaml, its really up to you). Then fiddle with them until you get it to look the way you want.
The two styles you'll need to play with are TabControl and TabItem
I'd think to a MVVM approach, instead.
Before all, shape the model of the data, as well as the business layer (commands, functions, etc.).
Then, you can "wear" your model (by leveraging a ViewModel) with a ListBox, for the left selector, and a simple ContentControl for the main part.
The selected item of the ListBox should be fed into the content of the body, and a DataTemplateSelector (for instance) will choose the proper visual fragment.
It's just a suggestion. Personally, I've found a bit tricky the TabControl and I seldom use it.
Cheers
An old trick is to have 2 different sets of images - one for clicked and one for passive (maybe one for mouseover) but clicked image will have the triangle in it.
This uses static images for buttons, which is very easy to use, but hard to modify on the fly.