Develop Reference

send data from one window to another c# xaml wpf

i want to send Data from one Textbox on window One to a label on window Two.
starting with window two:
<StackPanel>
<StackPanel x:Name="ButtonStackPanel" Height="Auto" Width="Auto">
<StackPanel Orientation="Horizontal">
<StackPanel Orientation="Vertical">
<Button Style="{DynamicResource ButtonStyle}" Content="To The Dark Side" Click="OnClickToDarkSide"/>
<Button Style="{DynamicResource ButtonStyle}" Content="To The Gray" Click="OnClickToGraySide"/>
<Button Style="{DynamicResource ButtonStyle}" Content="To The Light Side" Click="OnClickToLightSide"/>
</StackPanel>
<Border HorizontalAlignment="Center" VerticalAlignment="Stretch" Background="Red" Height="Auto" Width="2"/>
<Label Style="{DynamicResource LabelStyle}" x:Name="theTextBlock" Content="{Binding Source=CodeText}"/>
<Border HorizontalAlignment="Center" VerticalAlignment="Stretch" Background="Red" Height="Auto" Width="2"/>
<ToggleButton Style="{DynamicResource ToggleButtonStyle}" Content="Open Style Window" Name="StyleWindowButton" Click="OnClickOpenStyleWindow"/>
<ToggleButton Style="{DynamicResource ToggleButtonStyle}" Content="Open Text Window" Name="TextWindowButton" Click="OnClickOpenTextWindow"/>
</StackPanel>
<Border Height="2" Width="Auto" Background="Red" HorizontalAlignment="Stretch" VerticalAlignment="Center"/>
</StackPanel>
<Border Height="2" Width="Auto" Background="Red" HorizontalAlignment="Stretch" VerticalAlignment="Center"/>
</StackPanel>
Codebehind of Window Two:
public MainWindow()
{
(App.Current as App).CodeText = _jediCode;
InitializeComponent();
}
private void OnClickToDarkSide(object sender, RoutedEventArgs e)
{
(App.Current as App).ChangeSkin(Skin.Dark);
(App.Current as App).CodeText = _sithCode;
theTextBlock.Content = (App.Current as App).CodeText;
}
private void OnClickToLightSide(object sender, RoutedEventArgs e)
{
(App.Current as App).ChangeSkin(Skin.Light);
(App.Current as App).CodeText = _jediCode;
theTextBlock.Content = (App.Current as App).CodeText;
}
private void OnClickToGraySide(object sender, RoutedEventArgs e)
{
(App.Current as App).ChangeSkin(Skin.Gray);
(App.Current as App).CodeText = _grayCode;
theTextBlock.Content = (App.Current as App).CodeText;
}
private void OnClickOpenStyleWindow(object sender, RoutedEventArgs e)
{
if (StyleWindowButton.IsChecked == true)
{
styleWindow = new StyleWindow();
styleWindow.Show();
}
else
{
styleWindow.Close();
styleWindow = null;
}
}
private void OnClickOpenTextWindow(object sender, RoutedEventArgs e)
{
if (TextWindowButton.IsChecked == true)
{
textWindow = new InputWindow();
textWindow.Show();
}
else
{
textWindow.Close();
textWindow = null;
}
}
}
window one:
<Grid>
<TextBox HorizontalAlignment="Left" VerticalAlignment="Top" Height="200" Width="200" TextWrapping="Wrap"
AcceptsReturn="True" AcceptsTab="True" Text="{Binding Path=CodeText, Source={x:Static Application.Current}, UpdateSourceTrigger=PropertyChanged, Mode=TwoWay}" Margin="10,10,0,0">
<!-- TODO: trigger change from this textbox to the textblock in mainwindow -->
</TextBox>
</Grid>
code behind of one is empty.
app.xaml.cs:
public string CodeText
{
get => _codeText;
set { _codeText = value; OnPropertyChanged(nameof(CodeText)); }
}
Ok, the current behavior is clicking on one of the buttons (Dark Side, Gray, Light Side) leads to changes in the CodeText Property, which leads to a change of the content of the label of Window Two and the text of TextBox of Window One. Changing the text of the TextBox, changes also the CodeText Property, but does not lead to a change in the label and thats confusing, why does it work the one way, but not the other.
hope you have a hint for me. :) Maybe i missed a trigger or a kind of refresh for the label

bindings in window One and Two are set differently. (window Two does it wrong, Content="{Binding Source=CodeText}" is not valid binding)
in fact, window Two removes the binding by assigning CodeText directly as local value:
theTextBlock.Content = (App.Current as App).CodeText;
you should remove that line, and use the same binding as in window One:
<Label Style="{DynamicResource LabelStyle}" x:Name="theTextBlock"
Content="{Binding Path=CodeText, Source={x:Static Application.Current}}"/>

Setting focus on a button in xaml and having a text box automatically have the type cursor in it

Hello I currently have a xaml form pop up with some text, a text box and button called confirm.
Is there a way I can have the form appear with the cursor already in the text box so that the user can start typing straight away and have focus on the button so that when they press enter, it runs the buttons on_Click handler.
my xaml code is as follows for the textbox and button:
<TextBox x:Name="SessionName" Grid.Row="4" FontFamily="Calibri" FontSize="14" IsTabStop="True" TabIndex="1" MaxLines="2" AcceptsTab="True" AcceptsReturn="False" BorderThickness="1" Height="30" Width="300" HorizontalAlignment="Center" Margin="0,5,10,5" ForceCursor="True" >
<TextBox.ContextMenu>
<ContextMenu/>
</TextBox.ContextMenu>
</TextBox>
<Button x:Name="startAppButton" Content="Start" Grid.Row="5" Height="25" Width="150" Click="StartAppButton_Click" HorizontalAlignment="Center" />
For my .cs file, the code is as follows:
public class Class
{
public WelcomePage()
{
InitializeComponent();
/*disables window modification.*/
this.WindowStyle = WindowStyle.None;
}
public static string sessionName { set; get; }
private void StartAppButton_Click(object sender, RoutedEventArgs e)
{
if (SessionName.Text.ToString().Equals(""))
{
System.Windows.MessageBox.Show("Please give your session a name", "Error",
MessageBoxButton.OK, MessageBoxImage.Error);
}
else
{
sessionName = SessionName.Text.ToString();
Calibration.Degree_Choice dc = new Calibration.Degree_Choice();
this.Hide();
dc.ShowDialog();
this.Close();
}
}
}
Any advice as to if this is possible would be greatly appreciated.
J

You cannot have the focus set to two controls at the same time, however you can mark the button as the "default button" for the form (by setting IsDefault), and it'll accept return regardless of the focus. There is also a way of specifying which control is focused at the start (FocusManager.FocusedElement).
Try something like this:
<Window x:Class="WpfApplication1.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="MainWindow" Height="75.705" Width="277.037"
FocusManager.FocusedElement="{Binding ElementName=textBox1}">
<DockPanel>
<Button IsDefault="True" Click="Button_Click" Content="OK" DockPanel.Dock="Right" Width="50"/>
<TextBox Name="textBox1"/>
</DockPanel>

detect multitouch while pressed c#

I want to detect a touch event and do something while my finger is touching down.
What is the event I need?
I tried Manipulation*, Pointer*, Touch*, Stylus*, Holding*, etc...
If you have a sample code, better.
The most accurate code I have is this. But only works with finger moving.
<Window x:Class="WpfApplication2.MainWindow"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="MainWindow" Height="350" Width="525">
<Grid>
<Rectangle Name="Rect1" IsManipulationEnabled="True" Fill="Blue" HorizontalAlignment="Center" Height="100" VerticalAlignment="Center" Width="100" Margin="108,50,309,169" ManipulationDelta="Rect1_ManipulationDelta" />
<Rectangle Name="Rect2" IsManipulationEnabled="True" Fill="Blue" HorizontalAlignment="Center" Height="100" VerticalAlignment="Center" Width="100" Margin="338,50,79,169" ManipulationDelta="Rect2_ManipulationDelta" />
<TextBox Name="Text1" Text="0" HorizontalAlignment="Left" Height="23" Margin="108,267,0,0" TextWrapping="Wrap" VerticalAlignment="Top" Width="100"/>
<TextBox Name="Text2" Text="0" HorizontalAlignment="Left" Height="23" Margin="338,267,0,0" TextWrapping="Wrap" VerticalAlignment="Top" Width="100"/>
</Grid>
namespace WpfApplication2
{
public partial class MainWindow : System.Windows.Window
{
System.Windows.Input.ManipulationModes currentMode = System.Windows.Input.ManipulationModes.All;
public MainWindow()
{
InitializeComponent();
}
private void Rect1_ManipulationStarting(object sender, ManipulationStartingEventArgs e)
{
int variable = 0;
variable = Convert.ToInt32(Text1.Text);
variable++;
Text1.Text = variable.ToString();
}
private void Rect1_ManipulationDelta(object sender, ManipulationDeltaEventArgs e)
{
int variable = 0;
variable = Convert.ToInt32(Text1.Text);
variable++;
Text1.Text = variable.ToString();
}
private void Rect2_ManipulationStarting(object sender, ManipulationStartingEventArgs e)
{
int variable = 0;
variable = Convert.ToInt32(Text2.Text);
variable++;
Text2.Text = variable.ToString();
}
private void Rect2_ManipulationDelta(object sender, ManipulationDeltaEventArgs e)
{
int variable = 0;
variable = Convert.ToInt32(Text2.Text);
variable++;
Text2.Text = variable.ToString();
}
}
}

Touch* events will give you just touch. Pointer* will give you touch and mouse and stylus.
Use *Down to know when a touch goes down and *Up to know when it goes up. If you want to do something repeatedly while the touch is down, create a DispatcherTimer on the *Down and stop it on the *Up

UIElement/ContentElement.TouchDown is the event you need to accomplish what you are after.
Example:
<Rectangle Name="Rect1" IsManipulationEnabled="True" Fill="Blue" HorizontalAlignment="Center" Height="100" VerticalAlignment="Center" Width="100" Margin="108,50,309,169" TouchDown="Rect1_TouchDown" />
private void Rect1_TouchDown(object sender, TouchEventArgs e)
{
// Do stuff
}
For further information, refer to:
http://msdn.microsoft.com/en-us/library/system.windows.uielement.touchdown(v=vs.110).aspx and
http://msdn.microsoft.com/en-us/library/ms754010(v=vs.110).aspx

WPF popup with textbox?

I am trying to create a control that displays search results as a user types something in a textbox. For this, I have a textbox and a popup that shows up when the user types something into it (just like a google search box). Like so,
<Grid> <TextBox Name="userEntry" /> <Popup /> </Grid>
Now when the user starts typing into the textbox i want the popup to show and stay open until the user focusses on some other ui control or if the text entered is empty.
I am unable to achieve this easily and was wondering if there are alternate better ways of doing this in wpf.
Regards

XAML :
<Window>
<Grid>
<Grid.RowDefinitions>
<RowDefinition />
<RowDefinition />
</Grid.RowDefinitions>
<Button x:Name="btn" Content="Open Search Window" Height="30" Width="150" Click="btn_Click"/>
<Popup x:Name="popup" PlacementTarget="{Binding ElementName=btn}" Placement="Bottom" Width="200" Height="100" Margin="0,20,0,0">
<Border BorderBrush="Black" BorderThickness="2" Background="AliceBlue">
<TextBox x:Name="txtBox" VerticalAlignment="Center" Margin="15,0,15,0"/>
</Border>
</Popup>
<TextBox x:Name="focusTarger" Text="Focus Me !" Grid.Row="1" HorizontalAlignment="Center" VerticalAlignment="Center" Width="200" TextAlignment="Center" FontSize="16"/>
</Grid>
</Window>
CS :
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
GotFocus += MainWindow_GotFocus;
}
void MainWindow_GotFocus(object sender, RoutedEventArgs e)
{
FrameworkElement element = (FrameworkElement)e.OriginalSource;
if (txtBox == element || popup == element || element.Parent == popup)
return;
popup.IsOpen = !string.IsNullOrEmpty(txtBox.Text);
}
private void btn_Click(object sender, RoutedEventArgs e)
{
popup.IsOpen = true;
}
}

make data grid visible on click

I have this data grid where I am placing all my buttons
<Grid x:Name="ButtonGrid" HorizontalAlignment="Left" Margin="0,90,0,4" Width="186">
<Button x:Name="B1" Content="B1" Height="18" Margin="73,0,59,16" VerticalAlignment="Bottom" Click="B1"/>
<Button x:Name="B2" Content="B2" Height="18" Margin="0,0,-2,16" VerticalAlignment="Bottom" Click="B2_Click" HorizontalAlignment="Right" Width="57"/>
</Grid>
I have the grid collapased on start. But when a button {testGrid} is clicked, I want the grid to ne visible.
Here is my code
namespace project.Test
{
public partial class MainPage : UserControl
{
public MainPage()
{
InitializeComponent();
}
EDUTED
private void testGrid_Click(object sender, System.Windows.RoutedEventArgs e)
{
FrameworkElement ButtonGrid = (sender as FrameworkElement).FindName("ButtonGrid") as FrameworkElement;
if ( ButtonGrid.Visibility == System.Windows.Visibility.Collapsed)
ButtonGrid.Visibility = System.Windows.Visibility.Visible;
else
ButtonGrid.Visibility = System.Windows.Visibility.Collapsed;
}
}
}

I think if you move your Grid outside of your DataTemplate it will work. :)
However if you really need to put it in a DataTemplate, as long as your Button is at the same level as the Grid, you should still be able to find it.
Say your xaml code looks like this,
<UserControl xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
x:Class="controlstoryboardactionrefissue.MainPage" Width="640" Height="480">
<UserControl.Resources>
<DataTemplate x:Key="DataTemplate1">
<Grid x:Name="myGrid" Height="128" Background="#FFE7C0C0" Width="333">
<Button x:Name="myButton" Content="Button" HorizontalAlignment="Left" VerticalAlignment="Top" Width="75" Margin="31,29,0,0" Click="myButton_Click" />
</Grid>
</DataTemplate>
</UserControl.Resources>
<Grid x:Name="LayoutRoot" Background="White">
<ContentControl HorizontalAlignment="Left" VerticalAlignment="Top" Margin="175,198,0,0" ContentTemplate="{StaticResource DataTemplate1}" />
</Grid>
</UserControl>
Then the code behind,
private void myButton_Click(object sender, System.Windows.RoutedEventArgs e)
{
var myButton = (Button)sender;
var grid = myButton.Parent as Grid;
if (grid != null)
{
// do stuff
}
}
Hope it helps. :)