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).
Related
After reinstalling Visual Studio, the main window in any WPF projects ceased to be scaled to the scale selected in Windows. I have set the scale of the screen to 125% and before the window and all the text in it were increased in size. Now, it is the main window that remains the same size as at 100% scale. How to fix it?
The only thing I did besides reinstalling was to set the value according to the instructions from here: url
setx VSXAML_DISABLE_ON_DEMAND_RESOURCE_VALUES 1
Example:
Interface scale 125%
Main Window and Dialog Window
dimensions of both windows - Height="450" Width="800"
Scale 150%
And I remind you that the size of the windows is the same.
What can I do about it?
Main Window:
<Window x:Class="TestWpfApp.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:TestWpfApp"
mc:Ignorable="d"
Title="MainWindow" Height="450" Width="800"
Background="DarkGray">
<Grid Background="#222222">
<Grid.RowDefinitions>
<RowDefinition/>
<RowDefinition Height="50"/>
</Grid.RowDefinitions>
<Button x:Name="btn" Grid.Row="1" Content="Button"/>
</Grid>
</Window>
Dialog:
<Window x:Class="TestWpfApp.Dialog"
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:TestWpfApp"
mc:Ignorable="d"
Title="Dialog" Height="450" Width="800" Opacity="0.5">
<Grid>
<TextBlock Text="Test Text" FontSize="25"/>
</Grid>
</Window>
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 tab control inside canvas. How do I get a TabControl to use the full width of its parent?
<UserControl
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:sdk="http://schemas.microsoft.com/winfx/2006/xaml/presentation/sdk" x:Class="SilverlightApplication1.MainPage"
mc:Ignorable="d"
d:DesignHeight="300" d:DesignWidth="400">
<Canvas x:Name="LayoutRoot" Background="White" Margin="0,0,0,0">
<sdk:TabControl Width="400" Height="300" HorizontalAlignment="Stretch" HorizontalContentAlignment="Stretch" Margin="0,0" VerticalAlignment="Stretch" VerticalContentAlignment="Stretch" >
<sdk:TabItem Header="myResponse">
<Grid Background="#FFE5E5E5"/>
</sdk:TabItem>
<sdk:TabItem Header="TabItem">
<Grid Background="#FFE5E5E5"/>
</sdk:TabItem>
</sdk:TabControl>
Without talking about why you are using a canvas in the first place, I would recommend you read about width and height properties in WPF.
In your example, the width is set specifically to a defined amount of pixel. With this, the TabControl will not scale. You should use relative values like * and auto and work with margins where they are needed. This tutorial could be a start: http://www.c-sharpcorner.com/UploadFile/mahesh/wpf-layout-size-width-and-height/
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">
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.