When I set the control's tabindex to a repeated value, the error doesn't occur.
Focus on the 2 controls with a tabindex value of 2, first focus on Textbox 5, and then focus on Textbox 6. How does it work?
Why not prevent users from entering duplicate values?
<TextBox x:Name="Textbox0" TabIndex="0" Height="23" Margin="5,5,0,0" TextWrapping="Wrap" Text="TextBox" Width="505"/>
<TextBox x:Name="Textbox1" TabIndex="4" Height="23" Margin="5,5,0,0" TextWrapping="Wrap" Text="TextBox" Width="505"/>
<TextBox x:Name="Textbox2" TabIndex="1" Height="23" Margin="5,5,0,0" TextWrapping="Wrap" Text="TextBox" Width="505"/>
<Button x:Name="Textbox3" TabIndex="3" Content="Button" Height="40" Margin="5" Width="505"/>
<Button x:Name="Textbox5" TabIndex="2" Content="Button" Height="40" Margin="5" Width="505"/>
<Button x:Name="Textbox6" TabIndex="2" Content="Button" Height="40" Margin="5" Width="505"/>
The result:
Source
A tab index can consist of any valid integer greater than or equal to zero, lower numbers being earlier in the tab order. If more than one control on the same parent control has the same tab index, the z-order of the controls determines the order to cycle through the controls.
Related
I am using the MaterialDesignInXAML and handling localization with Infralution.Localization.Wpf Resx extension.
All works fine, but I noticed that when I use a DialogHost, all the controls in DialogContent tag to not get localized. the ones outside it are well localized.
Example :
<materialDesign:DialogHost DialogTheme="Inherit">
<materialDesign:DialogHost.DialogContent>
<Label Height="32" FontSize="22" FontFamily="Fonts/#Cooper Black" Foreground="#FFCBDAD1" HorizontalAlignment="Left" VerticalAlignment="Top" Content="{Resx Hello_Word}" TabIndex="2" Margin="87,45,0,0">
<materialDesign:DialogHost.DialogContent>
<Label Height="32" FontSize="22" FontFamily="Fonts/#Cooper Black" Foreground="#FFCBDAD1" HorizontalAlignment="Left" VerticalAlignment="Top" Content="{Resx Hello_Word}" TabIndex="2" Margin="87,45,0,0">
</materialDesign:DialogHost>
Here the second label will display the localized string, but the one inside DialogContent will just display "#Hello_Word"
How can I fix it ?
I finally found a workaround. I create an invisible control outside the DialogContent, and I bind its content/text to the one inside DialogContent
<materialDesign:DialogHost DialogTheme="Inherit">
<materialDesign:DialogHost.DialogContent>
<Label Height="32" FontSize="22" FontFamily="Fonts/#Cooper Black" Foreground="#FFCBDAD1" HorizontalAlignment="Left" VerticalAlignment="Top" Content="{Binding ElementName=h1, Path=Content}" TabIndex="2" Margin="87,45,0,0">
<materialDesign:DialogHost.DialogContent>
<Label Name="h1" Visiility="Hidden" Content="{Resx Hello_World}" >
</materialDesign:DialogHost>
I have a WPF application (C#) thats using a Material Designs PopUpBox for its menu navigation, as per the following:-
<materialDesign:PopupBox Margin="10,0,0,0" PlacementMode="BottomAndAlignLeftEdges" StaysOpen="false" IsEnabled="{Binding IsSystemControlsEnabled}" Style="{DynamicResource template_NavigationMenu}" >
<materialDesign:PopupBox.ToggleContent>
<materialDesign:PackIcon Foreground="White" Height="25" Kind="Menu" Width="25"/>
</materialDesign:PopupBox.ToggleContent>
<StackPanel Width="150" >
<Button Command="{Binding ScreenCommand}" CommandParameter="Dashboard" Content="Dashboard" FontSize="12" FontWeight="Medium" Height="20" Name="MenuDashboard" VerticalAlignment="Top" VerticalContentAlignment="Top" />
<Separator/>
<Button Command="{Binding ScreenCommand}" CommandParameter="Encrypt" Content="Encrypt" FontSize="12" FontWeight="Medium" Height="20" Name="MenuEncrypt" VerticalAlignment="Top" VerticalContentAlignment="Top" />
<Separator />
<Button Command="{Binding ScreenCommand}" CommandParameter="Decrypt" Content="Decrypt" FontSize="12" FontWeight="Medium" Height="20" Name="MenuDecrypt" VerticalAlignment="Top" VerticalContentAlignment="Top" />
<Separator />
</StackPanel>
</materialDesign:PopupBox>
Is there a way to cascade this menu and add an extra layer? So for example, if I was to select or hover over the button for Encryption, it would they give me a new popupbox, just to the right, with some new options relating to encryption?
I'm trying to find something like this https://m2.material.io/components/menus (first image) but can't find anything relating to C# / XAML, so looking for some inspiration from the experts...
Any help is greatly appreciated.
Thank you
I want to add a refresh button to my app so that I don't always have to quit the app to clear the data.
I have tried a RefreshRequested, but I can't make it work.
C# code:
private void RefreshButtonClick(object sender, RoutedEventArgs e)
{
RefreshContainer.requestRefresh();
}
<RefreshContainer>
<Grid HorizontalAlignment="Center" VerticalAlignment="Center" Width="910" Height="383" Margin="0,0,0,0">
<RelativePanel
HorizontalAlignment="Center" BorderBrush="DarkOliveGreen" BorderThickness="8" Background="FloralWhite" Height="356" VerticalAlignment="Center" Width="871" Margin="0,0,0,0" Visibility="Visible" RequestedTheme="Default">
<AppBarButton x:Name="RefreshButton" Click="RefreshButtonClick"
Icon="Refresh" Label="Refresh" HorizontalAlignment="Left" Margin="155,178,0,0" VerticalAlignment="Top"/>
<TextBlock x:Name="timerLabel" HorizontalAlignment="Left" Text="00:00:00" TextWrapping="Wrap" VerticalAlignment="Top" FontSize="72" FontWeight="Normal" TextAlignment="Center" Width="328" Margin="272,90,0,0"/>
<Button Name="startButton" Background="MediumSeaGreen" Foreground="White" Content="Start" HorizontalAlignment="Left" Click="Button_Click_Start" VerticalAlignment="Top" Margin="311,219,0,0"/>
<Button Name="stopButton" Background="MediumSeaGreen" Foreground="White" Content="Pause" HorizontalAlignment="Left" Click="Button_Click_Pause" VerticalAlignment="Top" Margin="398,219,0,0" RenderTransformOrigin="1.373,0.57"/>
<Button Name="resetButton" Background="MediumSeaGreen" Foreground="White" Content="Reset" HorizontalAlignment="Left" Click="Button_Click_Reset" VerticalAlignment="Top" Margin="498,219,0,0" RenderTransformOrigin="1.373,0.57"/>
<Button Name="restButton" Content="Parametres" HorizontalAlignment="Left" Click="Button_Click_Rest" VerticalAlignment="Top" Margin="698,192,0,0" RenderTransformOrigin="1.373,0.57"/>
<TextBlock Name="Round" Text="Nombre Round" HorizontalAlignment="Left" Height="20" Margin="382,70,0,0" TextWrapping="Wrap" VerticalAlignment="Top" Width="140" TextDecorations="Underline"/>
</RelativePanel>
</Grid>
</RefreshContainer>
I expect the app data to refresh
Refresh Button UWP
I tested your code, the problem is you have not set a scroll-able control as RefreshContainer's content. Base on #Stuart Smith provided document, you could realize refresh feature, before that you need place the above Grid content under the ScrollViewer.
Xaml
<RefreshContainer Name="MyRefreshContainer" RefreshRequested="MyRefreshContainer_RefreshRequested">
<ScrollViewer>
<Grid HorizontalAlignment="Center" VerticalAlignment="Center" Width="910" Height="383" Margin="0,0,0,0">
<RelativePanel
HorizontalAlignment="Center" BorderBrush="DarkOliveGreen" BorderThickness="8" Background="FloralWhite" Height="356" VerticalAlignment="Center" Width="871" Margin="0,0,0,0" Visibility="Visible" RequestedTheme="Default">
<AppBarButton x:Name="RefreshButton" Click="RefreshButtonClick"
Icon="Refresh" Label="Refresh" HorizontalAlignment="Left" Margin="155,178,0,0" VerticalAlignment="Top"/>
<TextBlock x:Name="timerLabel" HorizontalAlignment="Left" Text="00:00:00" TextWrapping="Wrap" VerticalAlignment="Top" FontSize="72" FontWeight="Normal" TextAlignment="Center" Width="328" Margin="272,90,0,0"/>
<Button Name="startButton" Background="MediumSeaGreen" Foreground="White" Content="Start" HorizontalAlignment="Left" VerticalAlignment="Top" Margin="311,219,0,0"/>
<Button Name="stopButton" Background="MediumSeaGreen" Foreground="White" Content="Pause" HorizontalAlignment="Left" VerticalAlignment="Top" Margin="398,219,0,0" RenderTransformOrigin="1.373,0.57"/>
<Button Name="resetButton" Background="MediumSeaGreen" Foreground="White" Content="Reset" HorizontalAlignment="Left" VerticalAlignment="Top" Margin="498,219,0,0" RenderTransformOrigin="1.373,0.57"/>
<Button Name="restButton" Content="Parametres" HorizontalAlignment="Left" VerticalAlignment="Top" Margin="698,192,0,0" RenderTransformOrigin="1.373,0.57"/>
<TextBlock Name="Round" Text="Nombre Round" HorizontalAlignment="Left" Height="20" Margin="382,70,0,0" TextWrapping="Wrap" VerticalAlignment="Top" Width="140" TextDecorations="Underline"/>
</RelativePanel>
</Grid>
</ScrollViewer>
</RefreshContainer>
Code behind
private void RefreshButtonClick(object sender, RoutedEventArgs e)
{
MyRefreshContainer.RequestRefresh();
}
private async void MyRefreshContainer_RefreshRequested(RefreshContainer sender, RefreshRequestedEventArgs args)
{
using (var RefreshCompletionDeferral = args.GetDeferral())
{
// Do some async operation to refresh the content
RefreshCompletionDeferral.Complete();
RefreshCompletionDeferral.Dispose();
}
}
Tomas, I see you've abandoned the refresh button for now, but I wanted to follow up in case you revisit this later or if others run into this issue in the future.
In order for the data to refresh, you'd need to code this in.
“To get fresh content when needed, handle the RefreshRequested event. In the event handler, you'll need code specific to your app to get the fresh content.” https://learn.microsoft.com/en-us/windows/uwp/design/controls-and-patterns/pull-to-refresh#handle-a-refresh-request. There's a sample in the doc there too.
You'd typically use data binding for this and the RefreshRequested event would need to edit the bound object.
using (var RefreshCompletionDeferral = args.GetDeferral())
{
await FetchAndInsertItemsAsync(3);
}
In the sample, you'll notice that FetchAndInsertItemsAsync is inserting new items to the backing collection.
There's more info on data binding here: https://learn.microsoft.com/en-us/windows/uwp/data-binding/data-binding-quickstart
I have three buttons lying one by one. I want to show top of all button, which i click. So that I have set canvas ZIndex in XAML Code. But I want to do this in Code Behind.
My XAML Output & Code -
<Button Name="Button1" Canvas.ZIndex="3" Content="Button1" Canvas.Top="100" Width="163" Height="58" FontSize="26" Click="Button1_Click" />
<Button Name="Button2" Canvas.ZIndex="2" Content="Button1" Canvas.Top="100" Canvas.Left="130" Width="163" Height="58" FontSize="26" Click="Button2_Click" />
<Button Name="Button3" Canvas.ZIndex="1" Content="Button1" Canvas.Top="100" Canvas.Left="260" Width="163" Height="58" FontSize="26" Click="Button3_Click" />
My XAML Output & Code (Check How the ZIndex was Changed)-
<Button Name="Button1" Canvas.ZIndex="3" Content="Button1" Canvas.Top="100" Width="163" Height="58" FontSize="26" Click="Button1_Click" />
<Button Name="Button2" Canvas.ZIndex="2" Content="Button1" Canvas.Top="100" Canvas.Left="130" Width="163" Height="58" FontSize="26" Click="Button2_Click" />
<Button Name="Button3" Canvas.ZIndex="1" Content="Button1" Canvas.Top="100" Canvas.Left="260" Width="163" Height="58" FontSize="26" Click="Button3_Click" />
How I change the Canvas.ZIndex property in WPF button control in Click Event?
You can set z index in code like this:
Panel.SetZIndex(control name, int index);
An attached property is set from code using by convention the SetPropertyName function.
Panel.SetZIndex(Button2, 0);
Z-index canbe set like this..
Panel.SetZIndex(Button2, 10);
I'm developing a Turing Machine simulator for a class on theory, and I'm trying to change the background color of the input area based upon whether the machine would accept the language (basically, one color over the other depending on if it's valid input).
Since I want to provide a couple example inputs, it needs to be a ComboBox. Since the professor needs to test his own inputs, it must be editable as well. So, here we are.
I've tried setting the ComboBox.Background property both programmatically and using XAML (via the Property editor), and neither work. I have no problem setting ComboBox.Foreground, however.
Here is my XAML:
<Window x:Class="Turing.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="Turing Machine Emulator" Height="400" Width="600" Loaded="onload" MinHeight="500" MinWidth="600">
<Grid>
<ComboBox x:Name="drpProblem" HorizontalAlignment="Left" Margin="10,10,0,0" VerticalAlignment="Top" Width="120" SelectionChanged="changeproblem"/>
<Label x:Name="lblDescription" Content="Language Description" Margin="135,7,90,0" VerticalAlignment="Top"/>
<Grid Margin="10,0,10,35" Height="24" VerticalAlignment="Bottom">
<Grid.ColumnDefinitions>
<ColumnDefinition Width="10*"/>
<ColumnDefinition Width="1*"/>
<ColumnDefinition Width="10*"/>
</Grid.ColumnDefinitions>
<Label x:Name="lblLeft" Content="left" HorizontalContentAlignment="Right" VerticalContentAlignment="Center" Padding="0" Margin="0,0,10,0" FontFamily="Consolas"/>
<Label x:Name="lblRight" Content="right" Grid.Column="2" VerticalContentAlignment="Center" Padding="0" Margin="10,0,0,0" FontFamily="Consolas"/>
<Label x:Name="lblCenter" Content="cur" Grid.Column="1" Height="24" Padding="0" VerticalContentAlignment="Center" HorizontalContentAlignment="Center" Background="#FFC5FFA4" FontFamily="Consolas" FontSize="16"/>
</Grid>
<Button x:Name="btnIterate" Content="Iterate" Margin="10,0,0,64" Height="20" VerticalAlignment="Bottom" Click="btnIterate_Click" HorizontalAlignment="Left" Width="236"/>
<!-- This one right here -->
<ComboBox x:Name="txtInput" Height="23" Margin="10,0,10,89" Text="Input String" VerticalAlignment="Bottom" FontFamily="Consolas" VerticalContentAlignment="Center" TextBoxBase.TextChanged="cboGetInput" BorderBrush="{x:Null}" Foreground="Black" Background="#FF874343" IsEditable="True" />
<TextBox x:Name="txtMs" Height="20" Margin="251,0,172,64" TextWrapping="Wrap" Text="wait (seconds)" VerticalAlignment="Bottom"/>
<Button x:Name="btnAutoRun" Content="AutoRun" Margin="0,0,10,64" Click="btnAutoRun_Click" Height="20" VerticalAlignment="Bottom" HorizontalAlignment="Right" Width="157"/>
<TextBox x:Name="txtTM" Margin="10,38,10,142" TextWrapping="Wrap" Text="Language" HorizontalScrollBarVisibility="Auto" VerticalScrollBarVisibility="Auto" FontFamily="Consolas" FontSize="14"/>
<Button x:Name="btnLoadLang" Content="Load" Margin="10,0,10,117" Height="20" VerticalAlignment="Bottom" Click="changeproblem"/>
<StatusBar Height="30" VerticalAlignment="Bottom">
<TextBlock x:Name="stTXTName" Text="StateName"/>
<Separator/>
<TextBlock x:Name="stTXTDescription" Text="StateDescription"/>
<Separator/>
<TextBlock x:Name="stTXTTransition" Text="NextTransition"/>
<Separator/>
<TextBlock x:Name="stTXTNext" Text="NextState"/>
</StatusBar>
</Grid>
</Window>
and here is the code I'm using to try to change the colors around:
if (TM.AcceptsString(txtInput.Text))
{
txtInput.Background = Brushes.LightGreen;
txtInput.Foreground = Brushes.LightGreen;
}
else
{
txtInput.Background = Brushes.Pink;
txtInput.Foreground = Brushes.Pink;
}
The foreground changes as expected, but the background color never changes from the default White. Am I doing something wrong? Is there some component control within ComboBox that I need to be setting properties for, as I did with TextBoxBase.TextChanged?
Set the FlatStyle attribute of the ComboBox to FlatStyle.Flat. This resolved a similar issue I experienced when the Win 7 Aero theme is turned on: The backcolor of the ComboBox does not show up in the default FlatStyle setting FlatStyle.Standard.
I had a similar issue and was able to resolve it by auto-generating the template for the ComboBox in Visual Studio 2015 (Right Click ComboBox in Design Window -> Edit Template -> Edit a Copy)