Get active user control name from main window in wpf - wpf

I am working on to WPF with MVVM pattern and created multiple user control and load it on main window as per need. only one user control is to be loaded on main window at a time.
I want to get the name of active user control from main window.
<Window x:Class="MyApp.Win.UI.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Name="MainWindowForm" Title="Sample App" WindowState="Maximized"
ResizeMode="NoResize" Closed="Window_Closed" KeyDown="Window_KeyDown" >
<Grid>
<StackPanel Name="contentgrid" Panel.ZIndex="1" >
//Load user controls dynamically as per need
// 1 user control is to be load at a time
// i want to skip background worker on some user control thats why i want to get the active user control name
</StackPanel>
</Grid>
</Window>

Application.Current.MainWindow.Content
This will give you the active content. If your user control is wrapped with any containers, you may need to iterate the visual tree and get it.

Related

Awesomium Webcontrol not loading any web page within WPF Page frame control

I have added Awesomium webcontrol in my WPF Page (Frame Navigation)
But its not loading any webcontent, but if i add the webcontrol in WPF Window, its working fine.
Please suggest me how to load a Awesomium webcontrol within WPF Page control
Below is the code which i am using in my application
Thanks in advance.
<Page x:Class="Project15A.SocialMain"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:my="clr-namespace:Project15A"
xmlns:my1="clr-namespace:Project15A.Controls"
xmlns:my2="http://schemas.awesomium.com/winfx"
MinHeight="300" MinWidth="500" Title="Project15A"
Loaded="Window1_Loaded">
<Grid Background="White">
<my2:WebControl HorizontalAlignment="Left" Margin="154,65,0,0"
Name="webControl1" VerticalAlignment="Top"
Source="http://www.google.com" />
</Grid>
</Page>
So I figured this one out. It is not a bug in Awesomium. (Though I think it should be on a quick start page.)
Awesomium supports two view modes. Offscreen and Windowed.
Offscreen is something that very manual. All input goes through you. (Why the default events don't still fire is kind of odd). I think this is the mode you will end up using if you want to interact with your HTML.
But if you want a normal imbedded browser window then you need to turn on the Window view mode.
Here is an example:
<Window
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:awe="http://schemas.awesomium.com/winfx"
x:Class="WpfAndSpa.MainWindow">
<Grid>
<awe:WebControl x:Name="WebControl"
ViewType="Window" <--------------+
Source="http://google.com"/> |
</Grid> |
</Window> |
|
This is the key part -----------------------------------------+

click on hyperlink (navigateuri) in one view should open another view in WPF MVVM

I am working on a WPF project which implements the MVVM architecture. I have a requirement where, a click on a hyperlink in one view(ux){Usercontrol} should open another view(window). I am able to load a view(usercontrol) through another view(window) by simply mentioning namespace:UsercontrolViewName in the host view, but I am clueless about how to do it through a hyperlink.
<UserControl x:Class="CCSAdvantage.AddOn.UX.DisplayPhoneNumbersView"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:res="clr-namespace:CCSAdvantage.AddOn.UX.Internationalization"
xmlns:local="clr-namespace:CCSAdvantage.AddOn.UX"
xmlns:xctk="http://schemas.xceed.com/wpf/xaml/toolkit"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008" mc:Ignorable="d>
<Grid>
<TextBlock Grid.Row="0">
<HyperlinkNavigateUri="">AdditionalPhone(s)/Manage</Hyperlink>
</TextBlock>
</Grid>
</UserControl>
This is the code for my UserControl, the Grid has other elements but I eliminated the details for simplicity. Additional Phone(s)/Manage => On clicking this link, a new window view which is also in xaml should open up. I tried giving the Window views name in the navigateuri property, but it does not work
Any help is appreciated. Thanks!
My problem was accessing the another view(v2) from the current view(v1), I am in. This can be achieved by using a delegate which is called at runtime in the v1's viewmodel, which calls window loader function in V2, this would load the window view(v2)
Check this Hyperlink in WPF Application.

MainWindow loaded but not visible at all time

I want to build a WPF Application that, when started, only has a tray Icon. If the User interacts with Menu Entries from the Tray's Context Menu, there will be Windows.
I need to load the MainWindow though, so I can listen to Clipboard Changed Events. But I don't want to show it.
I tried:
<Window x:Class="ClipboardListener.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:tb="http://www.hardcodet.net/taskbar"
Title="Should not see me"
ShowInTaskbar="False" Visibility="Collapsed" Opacity="100"
Width="320" Height="240">
But it still shows up? Setting Visibility to Hidden does not work for me since I need some Window to register the Clipboard Event Listener with the WinAPI.
Any Ideas?
I've recently had very similar task. All my attempts to make Window invisible, my googling, my stackoverflowing etc. failed. Finally I had a feeling that invisible window is something that should not be in WPF on some reason. It would be an easy task if there was TrayIcon control like in WinForms. Unfortunately, WPF does not have TrayIcon. This leads to the one that is present in WinForms.
Here's a good article on the issue. And my code that uses this dll:
<Window x:Class="ScannerClientWpf.TrayIcon"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:ni="clr-namespace:Hardcodet.Wpf.TaskbarNotification;assembly=Hardcodet.Wpf.TaskbarNotification"
Title="TrayIcon" WindowStyle="None" AllowsTransparency="True" Background="Transparent" ShowActivated="False" ShowInTaskbar="False" >
<Grid>
<ni:TaskbarIcon IconSource="/ScannerClient;component/app.ico"
ToolTipText="ScannerClient">
<ni:TaskbarIcon.ContextMenu>
<ContextMenu>
<MenuItem Header="Close" Click="MenuItem_Click"/>
</ContextMenu>
</ni:TaskbarIcon.ContextMenu>
</ni:TaskbarIcon>
</Grid>

WPF User Control extending border class. "Does not support direct content"?

I am producing graphics for a process control system and I would like to create a system border which would visually wrap the various sub system being displayed in the process mimic. I could use a regular border for this except I want it to not only changing color reflecting system status, but also popping up small "balloons" indicating the piece of the system that is in alarm state.
I created a test project with a User Control and added a ListBox (for the balloons) and a ContentPresenter element wrapped in a border control. However, whenever I use this new control in another app, it wont allow me to add content to it. I've tried messing some with the ContentPropertyAttribute and properties of the ContentPresenter element, but I feel I am in the blind here.
<UserControl x:Class="SystemStatusBorder.UserControl1"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
mc:Ignorable="d"
d:DesignHeight="300" d:DesignWidth="300">
<Canvas Height="290" Width="303">
<Border HorizontalAlignment="Stretch" VerticalAlignment="Stretch">
<ContentPresenter/>
</Border>
<ListBox Canvas.Right="0" Canvas.Bottom="0">
<ListBox.RenderTransform>
<TranslateTransform X="20"></TranslateTransform>
</ListBox.RenderTransform>
<ListBoxItem>TagA</ListBoxItem>
<ListBoxItem>TagB</ListBoxItem>
</ListBox>
</Canvas>
</UserControl>
I don't get it. What more should it need other than just the existence of a contentpresenter? UserControl subclasses ContentControl so I would have thought the wiring was in place. Eventually, I want it to be used something like this:
<SystemBorder>
<SystemBorder.MonitoredTags>
<List of relevant tags for the specific sub system goes here>
</SystemBorder.MonitoredTags>
<regular content goes here>
</SystemBorder>
To create your own container control, you must create a new custom control (not a UserControl).
Make your new control inherit from ContentControl.
Custom Controls don't have their own XAML. Instead, they are assigned a ControlTemplate.
When you create your first Custom Control, the IDE will create a new file Themes\Generic.xaml.
This is where the template for your control is. You can modify this template to match the XAML in your question. This will support the ContentPresenter element.
I found a very good walkthrough here.

How do I embed one WPF form into another?

I would like to have master WPF form with tab control where each tab contains one independent WPF form. Those forms do not depend on each other, so I thought it will be easier to develop each of them separately and then just embed them into master form.
Number of forms is known, so there is no need for dynamic plugin system.
When you use a Frame or NavigationWindow you can have it load different xaml Pages and even html. You can also make it act like a browser with forward and backward navigation. See http://msdn.microsoft.com/en-us/library/ms750478.aspx
You could put a Frame on each tab and have it load a certain Page.
<Window x:Class="PluginApplication.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="Window1" Height="300" Width="300">
<DockPanel>
<Frame Name="frame" NavigationUIVisibility="Visible" Source="SomePage.xaml" />
</DockPanel>
</Window>
<Page
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
WindowTitle="Page Title"
WindowWidth="500"
WindowHeight="200">
Hello world
</Page>
Make the child forms derive from UserControl, in the master form add a tab control with one of those user controls inside each tab.
I prefer make this with userControl
First create User control
after, include reference of this userControle in another place
anywhere in the frmHome...
<DockPanel>
<Entity:ucContactList/>
</DockPanel>

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