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how to add context menu in hosted usercontrol?
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How to make right click Button Context menu in WPF?
(2 answers)
Correct binding for ContextMenu in custom control
(3 answers)
Closed 11 months ago.
i'm trying to add to my custom Usercontrol (wpf vb.net ) that have a Grid as layout a dropdown menu (delete copy cut) on right click but every attempt i can't find a solution anyone can give me some advice ? I tried to create a treeview but its not what im trying to achieve, because it works only if i right click on it. but i would like to right click everywhere on the usercontrol and open a menu on mouse position is it possible ?
<UserControl x:Class="UCElement"
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"
xmlns:local="clr-namespace:FlowChartBuilder"
mc:Ignorable="d"
d:DesignHeight="450" d:DesignWidth="800" >
<Grid x:Name="UCElementGrid">
<Grid.ColumnDefinitions>
<ColumnDefinition></ColumnDefinition>
<ColumnDefinition></ColumnDefinition>
<ColumnDefinition></ColumnDefinition>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition></RowDefinition>
<RowDefinition></RowDefinition>
<RowDefinition></RowDefinition>
</Grid.RowDefinitions>
</Grid>
</UserControl>
The solution is to explicitly add a ContextMenu control:
<UserControl x:Class="UCElement"
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"
xmlns:local="clr-namespace:FlowChartBuilder"
mc:Ignorable="d"
d:DesignHeight="450" d:DesignWidth="800" >
<!-- ADD THIS -->
<UserControl.ContextMenu>
<ContextMenu Name="ContextMenu">
<MenuItem Header="Delete" Click="DeleteItem" ></MenuItem>
<Separator/>
</ContextMenu>
</UserControl.ContextMenu>
<!-- END -->
<Grid x:Name="UCElementGrid">
<Grid.ColumnDefinitions>
<ColumnDefinition></ColumnDefinition>
<ColumnDefinition></ColumnDefinition>
<ColumnDefinition></ColumnDefinition>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition></RowDefinition>
<RowDefinition></RowDefinition>
<RowDefinition></RowDefinition>
</Grid.RowDefinitions>
</Grid>
</UserControl>
Related
So I am following a tutorial and I have to add a click event to a button, like I've done many time before. For some reason it give me the following error: Ensure Event Failed.
I did see some questions on the internet that I have to declare a x:Class, but I have done that. It may be incorrect, but I don't know. Below is my XAML code.
<Window x:Class="MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:local="clr-namespace:img_tutorial"
mc:Ignorable="d"
Title="MainWindow" Height="450" Width="800">
<Grid ShowGridLines="true" x:Name="theGrid">
<Grid.ColumnDefinitions>
<ColumnDefinition />
<ColumnDefinition />
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition />
<RowDefinition />
</Grid.RowDefinitions>
<Image HorizontalAlignment="Left" Height="211" VerticalAlignment="Top" Width="387" Source="acces.png" Stretch="UniformToFill"/>
<StackPanel>
<TextBox x:Name="txtImage"></TextBox>
<Button Click="">Add Image</Button>
</StackPanel>
</Grid>
</Window>
I figured it out! The mistake wasn't in my XAML code but in my Visual Basic. For some reason I cannot explain it set the Class as MainWindow3. I changed it to MainWindow and that allowed me to add my event.
I have a dialog containing 2 TextBlocks, a Progress Bar and a cancel Button.
Here is the XAML:
<Window x:Class="WpfApplication4.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:local="clr-namespace:WpfApplication4"
mc:Ignorable="d"
Title="MainWindow" Height="Auto" Width="200">
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
<RowDefinition Height="Auto"/>
<RowDefinition Height="Auto"/>
<RowDefinition Height="Auto"/>
</Grid.RowDefinitions>
<TextBlock x:Name="txtFirst" Grid.Row="0" Margin="5" TextWrapping="Wrap">This is a really really really really long string that wraps</TextBlock>
<TextBlock x:Name="txtSecond" Grid.Row="1" Margin="5" Text="A Shorter string" TextWrapping="Wrap" MaxWidth="200"/>
<ProgressBar x:Name="prgProgress" Grid.Row="2" Margin="5" Height="20" />
<Button x:Name="btnCancel" Grid.Row="3" Margin="5" Height="25" Width="50"/>
</Grid>
</Window>
I would like the Window not to have a fixed height but auto adjust its height based on the size of its children and no more, but can’t see a way to do this. At the moment when I don’t assign anything to the Window’s height, it seems to adopt a height that is much bigger that the content.
Not sure why, or where it gets height value from? If I set Windows Height = “Auto” I get the same thing. All the heights for the RowDefinitions are set to “Auto”, which I take to mean ‘set row height to be row child height’.
You need to use SizeToContent property, check the msdn link.
Example:
<Window xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
…
SizeToContent="WidthAndHeight">
So here is my problem. I have a WPF application basically composed of a TabControl with many TabItems. I have each TabItem declared in separated classes, and what I do is insert them into the TabControl of the MainWindow like this:
<TabControl x:Name="tabCtrl" Grid.Column="2" Margin="89.765,29.697,89.766,33.697"
Style="{DynamicResource TabControlStyle1}" TabStripPlacement="Left"
SelectionChanged="tabCtrl_SelectionChanged">
<TabControl.Background>
<SolidColorBrush Color="#FFF9F9F9" Opacity="0.6"/>
</TabControl.Background>
<local:WelcomeTab Width="Auto" Height="Auto" x:Name="welcomeTab"/>
<local:Step1Tab Width="Auto" Height="Auto" x:Name="step1Tab"/>
<local:Step2Tab Width="Auto" Height="Auto" x:Name="step2Tab"/>
<local:Step3Tab Width="Auto" Height="Auto" x:Name="step3Tab"/>
<local:Step4Tab Width="Auto" Height="Auto" x:Name="step4Tab"/>
</TabControl>
I use Expression Blend to edit the tabs, and as I'm using this method, I have to edit each tab in their own class. The problem is that when I want to do it, I must do it directly in the XAML because all I see of the TabItem is the header.
The XAML of this tab, for example, is something like this:
<TabItem x:Class="Foo.Step1Tab"
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"
xmlns:Microsoft_Windows_Themes="clr-namespace:Microsoft.Windows.Themes;assembly=PresentationFramework.Aero"
xmlns:p="clr-namespace:Foo.Properties"
x:Name="step1Tab" IsEnabled="true"
IsManipulationEnabled="True"
d:DesignHeight="300" d:DesignWidth="300" Header="{x:Static p:Resources.step1Tab}" Style="{DynamicResource TabItemStyle1}">
<Content of the tab>
</TabItem>
Is there anything I can do to be able to see the elements of the tab and manipulate them?
I have a DockPanel in a UserControl, and in the designer looks everything fine, but I get an exception in runtime from the InitializeComponent():
The type 'DockPanel' was not found because 'http://schemas.microsoft.com/winfx/2006/xaml/presentation/toolkit' is an unknown namespace.
Any idea?
<UserControl x:Class="Controls.PropertiesControl"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:my="clr-namespace:Controls"
xmlns:toolkit="http://schemas.microsoft.com/winfx/2006/xaml/presentation/toolkit"
mc:Ignorable="d"
d:DesignHeight="250" d:DesignWidth="800"
>
<Grid x:Name="LayoutRoot" Background="White">
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="30"/>
</Grid.RowDefinitions>
<toolkit:DockPanel Background="Gray" Grid.Row="0" Grid.Column="0" />
</Grid>
</Grid>
</UserControl>
Do you reference the correct System.Windows.Controls.Toolkit.dll assembly in your project? If you're using Silverlight 4, also make sure it's the right version 4 (not 3).
I have a user control and within it I have two controls: 1) a search criteria control (custom user control) and 2) a Telerik RadGridView.
Apart from that I have a window that is the shell for my application and in it exists three regions. When this window opens I click a button and the user control mentioned above gets inserted into one of the regions. Now that the user control is loaded I edit my search criteria and click the button to populate my grid with around 1,000 records. The problem is that the grid's scroll bar doesn't become enabled because the grid control maximizes to fit the size of all the data which runs past the screen.
The only way this works properly is to set the Height property of the grid to an absolute value but then the grid doesn't size with the window.
I've tried everything that I can think of: When in the grid I set the row def size to 200*, I put the grid in a wrap panel, I put it in a dockpanel, set the VerticalAlignment to stretch, changed the dock panel to stack panel.
Shell:
<Window x:Class="WTS.CGCApplicationInterface.CGCApplicationShellView"
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"
xmlns:cal="http://www.codeplex.com/CompositeWPF"
xmlns:inf="clr-namespace:WTS.CGCApplicationInterface.Infrastructure;assembly=WTSCGCApplicationInterface.Infrastructure"
mc:Ignorable="d"
d:DesignHeight="300" d:DesignWidth="300" Width="750" Height="480"
Title="CGC Interface Window">
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="Auto" />
<RowDefinition Height="200*"/>
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto" />
<ColumnDefinition />
</Grid.ColumnDefinitions>
<ItemsControl cal:RegionManager.RegionName="MenuRegion" Grid.Column="0" Grid.ColumnSpan="2" Grid.Row="0" />
<ItemsControl cal:RegionManager.RegionName="SwitchboardRegion" Grid.Column="0" Grid.Row="1" />
<ItemsControl cal:RegionManager.RegionName="MainRegion" Grid.Column="1" Grid.Row="1" />
</Grid>
User Control:
<UserControl x:Class="WTS.CGCApplicationInterfaceMVVM.Views.Oncor.OncorTimesheetCGC"
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"
xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation"
xmlns:wtsControls="clr-namespace:WTS.CGCApplicationInterface.UserControls;assembly=WTSCGCApplicationInterface.Infrastructure"
mc:Ignorable="d"
d:DesignHeight="300" d:DesignWidth="600" Background="Red">
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="Auto" />
<RowDefinition Height="200*" />
</Grid.RowDefinitions>
<wtsControls:CGCQueryUserControl Grid.Row="0"/>
<telerik:RadGridView ItemsSource="{Binding Path=Timesheets}" AutoGenerateColumns="False" Grid.Row="1"
ScrollViewer.VerticalScrollBarVisibility="Visible">
<telerik:RadGridView.Columns>
<telerik:GridViewToggleRowDetailsColumn></telerik:GridViewToggleRowDetailsColumn>
<telerik:GridViewDataColumn Header="MyField1" UniqueName="AssociatedObject.MyField1" IsVisible="False" />
<telerik:GridViewDataColumn Header="MyField2" UniqueName="AssociatedObject.MyField2" IsVisible="False" />
I wish I could get points for answering my own question. I do realize that this could be taken advantage of. That said, in my shell, I changed the ItemsControl region to a ContentControl and it works perfectly.