So I created a custom Pop Up dialogue box in UWP, to make it reusable, i made use it of a User Control
<UserControl
x:Class="ContentDialogueBox.PopUpCustomDialogueUserControl"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="using:ContentDialogueBox"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
mc:Ignorable="d"
d:DesignHeight="300"
d:DesignWidth="400">
<ContentDialog x:Name="MyContentDialogCustom"
VerticalAlignment="Stretch"
HorizontalAlignment="Stretch"
Title="Lorem Ipsum"
PrimaryButtonText="OKxxx"
SecondaryButtonText="Canc"
Margin="0,0,-98,0" Width="1000" >
<Grid Background="Wheat">
<Grid.ColumnDefinitions>
<ColumnDefinition/>
<ColumnDefinition/>
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition/>
<RowDefinition/>
<RowDefinition/>
</Grid.RowDefinitions>
<TextBlock Text="Name" HorizontalAlignment="Center" VerticalAlignment="Center"/>
<TextBox PlaceholderText="First Name" Grid.Row="0" Grid.Column="1" HorizontalAlignment="Stretch" VerticalAlignment="Center" Margin="10"/>
<TextBlock Text="Middle Name" HorizontalAlignment="Center" VerticalAlignment="Center" Grid.Row="1"/>
<TextBox PlaceholderText="Middle Name" Grid.Row="1" Grid.Column="1" HorizontalAlignment="Stretch" VerticalAlignment="Center" Margin="10"/>
<TextBlock Grid.Row="2" Text="Name" HorizontalAlignment="Center" VerticalAlignment="Center"/>
<TextBox PlaceholderText="First Name" Grid.Row="2" Grid.Column="1" HorizontalAlignment="Stretch" VerticalAlignment="Center" Margin="10"/>
</Grid>
</ContentDialog>
</UserControl>
I was able to reference the user control in another page that contains the button named ButtonShowContentDialog4, what i want to achieve is display the PopUp Dialogue box, when i click the button in the page. Please how do i achieve this.
private void ButtonShowContentDialog4_Click(object sender, RoutedEventArgs e)
{
//show the PopUp here when this button is clicked
}
There are couple of ways to achieve that. Apart from the thing that you could have made a custom ContentDialog instead of putting it inside the user control, you can probably achieve your goal like this:
In your PopUpCustomDialogueUserControl class define a method that would show your popup:
public async Task ShowMyDialog() => await MyContentDialogCustom.ShowAsync();
Once you have it, add your PopUpCustomDialogueUserControl somwhere in your Page in xaml (remember to have a suitable namespace added (ContentDialogueBox) defined below as local) and add it a Name:
<local:PopUpCustomDialogueUserControl x:Name="MyCustomDialog"/>
Then you can call its method in code:
private async void ButtonShowContentDialog4_Click(object sender, RoutedEventArgs e)
{
await MyCustomDialog.ShowMyDialog();
}
Related
I try to save and load TabItems via XamlWriter and XamlReader at runtime so that the user can restore the previous session. Each TabItem consists of UserControls and standard WPF controls like grids,buttons and checkboxes.
It all works fine until I try to subscribe to events of let's say a button.
If I raise them manually with RaiseEvent() they work, but if I click on them nothing happens. Even if I set IsEnabled=false the button is displayed as enabled. LogicalTreeHelper.FindLogicalNode gives me the right button, but the Click event also won't trigger. The IsLoaded property is false, so I assume there has to be some underlying problem with the initialization.
Basically this is the code to read from the file
StreamReader sw = new StreamReader(file);
XmlReader xmlReader = XmlReader.Create(sw);
TabItem tabItem = (TabItem)XamlReader.Load(xmlReader);
.. and this to save each TabItem to a seperate xml file
foreach (TabItem tabItem in tabControlMain.Items)
{
StreamWriter sw = new StreamWriter(Path.Combine(path,tabItem.Name + ".xml"), false);
string savedTab = XamlWriter.Save(tabItem);
sw.Write(savedTab);
sw.Close();
}
Here is an example TabItem saved to a file
<TabItem IsSelected="True" Header="Test" Name="tabItem1" HorizontalAlignment="Left" VerticalAlignment="Top" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:womoc="clr-namespace:WeldOsMqttOpcClient;assembly=blabla">
<TabItem.HeaderTemplate>
<DataTemplate DataType="{x:Type TabItem}">
<TextBox Margin="0,0,30,0" Text="{Binding Path=.}" />
</DataTemplate>
</TabItem.HeaderTemplate>
<Grid HorizontalAlignment="Stretch" VerticalAlignment="Stretch">
<womoc:UcOverviewTabPage Autoconnect="False" HorizontalAlignment="Stretch" VerticalAlignment="Stretch">
<Grid Name="gridParentOv">
<Grid Name="gridMqttOpcControls" Height="599.08" HorizontalAlignment="Stretch" VerticalAlignment="Top">
<womoc:UcConnection Name="ucOpc" MinWidth="400" HorizontalAlignment="Right" VerticalAlignment="Stretch">
<GroupBox Header="OPC [10.5.51.130]" Name="groupBox" HorizontalAlignment="Stretch" VerticalAlignment="Stretch">
<ScrollViewer>
<Grid Name="gridTextBoxesWithValues" HorizontalAlignment="Stretch" VerticalAlignment="Stretch">
<Grid.ColumnDefinitions>
<ColumnDefinition />
<ColumnDefinition />
</Grid.ColumnDefinitions>
<Grid.RowDefinitions>
<RowDefinition Name="rowLabel" />
</Grid.RowDefinitions>
<Label Background="#FF008000" HorizontalContentAlignment="Center" VerticalContentAlignment="Center" Name="labelConnected" Width="190" Height="26" Margin="0,0,0,0" HorizontalAlignment="Center" VerticalAlignment="Top" Grid.ColumnSpan="2">Connected!</Label>
</Grid>
</ScrollViewer>
</GroupBox>
</womoc:UcConnection>
</Grid>
<Grid Name="gridConnection" MinHeight="30" HorizontalAlignment="Stretch" VerticalAlignment="Bottom">
<Button Name="btnConnect" Width="55" Margin="100,0,0,10" HorizontalAlignment="Center" VerticalAlignment="Bottom" IsEnabled="False">Connect</Button>
<TextBox Name="tbIPAddress" Width="95" Height="18" Margin="0,0,100,10" HorizontalAlignment="Center" VerticalAlignment="Bottom" IsEnabled="False">10.5.51.130</TextBox>
<CheckBox Name="cbMqtt" Width="46" Height="15" Margin="20,0,0,10" HorizontalAlignment="Left" VerticalAlignment="Bottom" IsEnabled="False">Mqtt</CheckBox>
<CheckBox IsChecked="True" Name="cbOpc" Width="42" Margin="0,0,20,10" HorizontalAlignment="Right" VerticalAlignment="Bottom" IsEnabled="False">Opc</CheckBox>
</Grid>
</Grid>
</womoc:UcOverviewTabPage>
</Grid>
</TabItem>
UcOverviewTabPage is one of my UserControls, in which there is for example a button. I try to subscribe to the events manually ->
public UcOverviewTabPage()
{
InitializeComponent();
cbMqtt.Checked += CbMqtt_Checked;
cbMqtt.Unchecked += CbMqtt_Unchecked;
cbOpc.Checked += CbOpc_Checked;
cbOpc.Unchecked += CbOpc_Unchecked;
btnConnect.Click += BtnConnect_Click;
var children = LogicalTreeHelper.FindLogicalNode(this, "btnConnect") as Button;
bool loaded = children.IsLoaded;
// -> FALSE
}
Bear in mind, creating new custom UserControls during runtime works perfectly. The problem only occurs when reading out of the XML file.
I except the UserControls or any other Controls to work like they do when created during runtime. What am I missing?
I want to make change main panel content when I choice action in menu button.
Like main content page, setting page, content page on Main panel (in code used grid x:Name="main_~~~)
It for use just can make 3 and control visibility??
or Can use include like xml at Android and change include target??
( ex > includelayout="#layout/app_bar_main")
Mainwindow.xaml
<Window x:Class="M_C.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:M_C"
mc:Ignorable="d"
Title="MainWindow"
Width="1024" Height="768"
WindowStyle="None"
WindowState="Maximized"
WindowStartupLocation="CenterScreen">
<Grid x:Name="wide_Out" Background="#000000">
<Viewbox Stretch="Uniform">
<Grid Width="1024" Height="768" VerticalAlignment="Top">
<DockPanel x:Name="L_black" HorizontalAlignment="Left"
Height="768" LastChildFill="False" VerticalAlignment="Top" Width="62"
Background="#FF242424">
<Button Margin="15,8,0,0" Height="40"
VerticalAlignment="Top" Width="30"/>
</DockPanel>
<DockPanel x:Name="T_blue" HorizontalAlignment="Left"
Height="84" LastChildFill="False" Margin="62,0,0,0" VerticalAlignment="Top"
Width="968" Background="#FF248BC7">
<TextBlock Margin="200,5,200,0" Height="70"
TextWrapping="Wrap" Text="TextBlock" VerticalAlignment="Top" Width="554"/>
</DockPanel>
<DockPanel x:Name="L_blue" HorizontalAlignment="Left"
Height="685" LastChildFill="False" Margin="62,83,0,0"
VerticalAlignment="Top" Width="82" Background="#FF248BC7"/>
<DockPanel x:Name="R_blue" HorizontalAlignment="Left"
Height="685" LastChildFill="False" Margin="940,83,0,0"
Background="#FF248BC7" Width="84"/>
<DockPanel x:Name="B_blue" HorizontalAlignment="Left"
Height="90" LastChildFill="False" Margin="143,678,0,0"
VerticalAlignment="Top" Width="799" Background="#FF248BC7">
<Image Margin="250,15,250,15" Height="70"
VerticalAlignment="Top" Width="290" />
</DockPanel>
<!--<DockPanel x:Name="main_content_panel"
HorizontalAlignment="Left" Height="594" LastChildFill="False"
Margin="144,84,0,0" VerticalAlignment="Top" Width="790">-->
<Grid x:Name="main_con_body" Margin="143,82,84,88"
Width="798" Height="594" Background="#ffffff">
</Grid>
<!--</DockPanel>-->
</Grid>
</Viewbox>
</Grid>
</Window>
You can Define Frame inside Your Window and navigate between as many page you want:
<Frame Name="FrameWithinGrid" >
</Frame>
and on button Click you can simply navigate:
private void button1_Click(object sender, RoutedEventArgs e)
{
FrameWithinGrid.Navigate(new System.Uri("Page1.xaml",
UriKind.RelativeOrAbsolute));
}
to know more See here
MVVM Approach
Make main_con_body be a ContentControl
Make Window's DataContext a viewmodel
Bind main_con_body's Content property to a viewmodel property of the data context
Define different DataTemplates for the various types of viewmodels that might be present
I'm very new to WPF application development.
I'm writing a simple WPF application in which I'll just have one window and pages will change on click buttons provided in UI.
Here how can have base page in which i'll add some header which is common for all pages i'm designing.
Is there anything like by extending that BasePage, all controls will come to this page?
For example, My app title should come in all page which I don't want to add in XAMLs of all pages.
Please let me know if my assumption itself is wrong.
Edited:
My BasePage:
public class BasePage : Page
{
public BasePage()
{
}
}
XAML of my HomePage:
<local:BasePage x:Class="CCS.ui.HomePage"
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:My.ui"
mc:Ignorable="d"
d:DesignHeight="300" d:DesignWidth="300"
Title="HomePage">
<StackPanel>
<WrapPanel Name="root"></WrapPanel>
<Button Name="Home" Content="Home"></Button>
<Button Name="Home3" Content="Home2"></Button>
</StackPanel>
Here I'm not sure where to write controls of header which should be added to BasePage. Because if BasePage is created from XAML It is showing error like "Cannot use Pages generated from XAML".
There are several ways to do what you want. Here I put a small example:
I created a Window with 3 main controls, Menu (for navigation), TextBox (Header) and a Grid (Host)
When I click on the menu, I add a UserControl in the HostGrid.
MainWindow.xaml
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="auto"/>
<RowDefinition Height="auto"/>
<RowDefinition/>
</Grid.RowDefinitions>
<Menu>
<MenuItem Header="Home" x:Name="Home" Click="MenuItem_Click"/>
<MenuItem Header="Page 1" x:Name="Page1" Click="MenuItem_Click"/>
<MenuItem Header="Page 2" x:Name="Page2" Click="MenuItem_Click"/>
</Menu>
<TextBlock Grid.Row="1" Text=" Header" HorizontalAlignment="Center" VerticalAlignment="Center" FontSize="24" Height="40"/>
<Grid Grid.Row="2" x:Name="HostGrid"></Grid>
</Grid>
MainWindow.cs
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
}
private void MenuItem_Click(object sender, RoutedEventArgs e)
{
HostGrid.Children.Clear();
switch(((MenuItem)e.OriginalSource).Name)
{
case "Home":
HostGrid.Children.Add(new UserControlHome());
break;
case "Page1":
HostGrid.Children.Add(new UserControl1());
break;
case "Page2":
HostGrid.Children.Add(new UserControl2());
break;
}
}
}
UserControlHome.xaml
<Grid Background="Crimson">
<TextBlock Text="Home" FontSize="18" VerticalAlignment="Center" HorizontalAlignment="Center"/>
</Grid>
UserControl1.xaml
<Grid Background="Lavender">
<TextBlock Text="Page 1" FontSize="18" VerticalAlignment="Center" HorizontalAlignment="Center"/>
</Grid>
UserControl2.xaml
<Grid Background="Ivory">
<TextBlock Text="Page 2" FontSize="18" VerticalAlignment="Center" HorizontalAlignment="Center"/>
</Grid>
I have the following main.xaml and usercontrol.
I need to place several times the user control on the 2nd row, 2nd column of the grid, By using visual studio it wont allow to drag and drop the user control, so I suppose I have to do it by code, I just dont know how
MainPage.xaml
<Grid HorizontalAlignment="Left" Height="768" VerticalAlignment="Top" Width="1366" x:Name="grid" Background="Black">
<Grid.RowDefinitions>
<RowDefinition Height="150"/>
<RowDefinition/>
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition/>
<ColumnDefinition Width="250"/>
</Grid.ColumnDefinitions>
<Border BorderBrush="White" BorderThickness="3" Grid.Column="1" Background="Red" CornerRadius="30"/>
<TextBlock x:Name="txtCountry" Grid.Column="1" TextWrapping="Wrap" FontSize="36" HorizontalAlignment="Center" VerticalAlignment="Center"/>
<TextBlock x:Name="txtTime" Grid.Row="1" TextWrapping="Wrap" FontSize="180" HorizontalAlignment="Center" VerticalAlignment="Center"/>
</Grid>
Usercontrol
<UserControl
x:Class="AlarmPro.TimeOnCity"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="using:AlarmPro"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
mc:Ignorable="d"
d:DesignHeight="150"
d:DesignWidth="250">
<Grid Background="Black">
<Grid.RowDefinitions>
<RowDefinition Height="30"/>
<RowDefinition/>
</Grid.RowDefinitions>
<Border BorderBrush="#FFDE6A6A" BorderThickness="1" Grid.Row="0" Grid.Column="0" Background="#FFDC4646">
<TextBlock TextWrapping="Wrap" Text="TextBlock" HorizontalAlignment="Center" VerticalAlignment="Center" FontSize="16"/>
</Border>
<Border BorderBrush="Black" BorderThickness="1" Grid.Row="1" Background="#FFAE4F00">
<TextBlock TextWrapping="Wrap" Text="TextBlock" HorizontalAlignment="Center" VerticalAlignment="Center" FontSize="36"/>
</Border>
</Grid>
</UserControl>
Do you mean like this?
<my:UserControlName Grid.Column="2" Grid.Row="2" ... />
<my: in this case is the alias for the CLR namespace the UserControl resides in. It is defined at the top of your XAML, inside the <Window> or <UserControl> tag depending on context.
For example,
<Window ...
xmlns:my="clr-namespace:AssemblyName"
...
/>
MainPage.Xaml
<Page
x:Class="UserControlExample.MainPage"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="using:UserControlExample"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
mc:Ignorable="d">
<Grid x:Name="MainContent" Background="Azure" >
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
<RowDefinition Height="*"/>
</Grid.RowDefinitions>
<ScrollViewer Grid.Row="1" HorizontalScrollBarVisibility="Hidden"
VerticalScrollBarVisibility="Hidden">
<local:UserControl1 x:Name="MyHelloWorldUserControl" Grid.Row="1" />
</ScrollViewer>
</Grid>
</Page>
UserControl1.xaml
<UserControl
x:Class="UserControlExample.UserControl1"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="using:UserControlExample"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
mc:Ignorable="d"
d:DesignHeight="300"
d:DesignWidth="400">
<Grid Background="Bisque">
<StackPanel>
<StackPanel Orientation="Horizontal" Height="81">
<TextBlock Text="Your Name is" Foreground="Blue" FontSize="30" Margin="0,0,0,10"/>
<TextBox x:Name="Input" Background="White" Width="225" />
</StackPanel>
<Button Content="Click Me" Foreground="Brown" FontSize="30" Click="Button_Click"/>
<TextBlock x:Name="Output" FontSize="100"/>
</StackPanel>
</Grid>
</UserControl>
MainPage.xaml, I am binding a login UserControl
by using the namespace : xmlns:UC="clr-namespace:Test.Views" , since I have my usercontrol in Folder named "Views".
<ScrollViewer>
<UC:Login BtnLoginClick="Login_BtnLoginClick"/>
</ScrollViewer>
Login.cs
public partial class Login : UserControl {
public event EventHandler BtnLoginClick;
public Login()
{
InitializeComponent();
}
private void btnLogin_Click(object sender, RoutedEventArgs e)
{
string userName = txtUserName.Text;
string userPassword = txtUserPassword.Password.Trim();
if (userName != null && userName != string.Empty && userPassword != null && userPassword != string.Empty)
{
if (this.BtnLoginClick != null)
{
this.BtnLoginClick(this, e);
}
}
else
{
MessageBox.Show("Invalid username or password");
}
}
}
Finally, dont forgot to use the event handler in MainPage.xaml to capture the button clicked event from Login Usercontrol to do other actions.
MainPage.xaml
<UC:Login BtnLoginClick="Login_BtnLoginClick"/>
Here "BtnLoginClick" its an event Handler defined in the Login.xaml[User Control].
Create new event for this "BtnLoginClick" event as i created "Login_BtnLoginClick".
MainPage.cs
private void Login_BtnLoginClick(object sender, EventArgs e)
{
Messagebox.Show("Event captured successfully");
////Here you can add your stuffs...
}
For UWP, in UserControl.xaml, find the local namespace xmlns:local notation: xmlns:local="using:ProjectName.Folder" at the top (by convention, C# namespaces are named the same way as the folder that contains them, so folder also means namespace).
In MainPage.xaml, add a reference to this namespace. The reference prefix can be any name desired: for example, CustomPrefix, as in xmlns:CustomPrefix="using:ProjectName.Folder". Then, anywhere in MainPage.xaml, display the control by prefixing its name with <CustomPrefix:...>.
UserControl.xaml
<UserControl
xmlns:local="using:ProjectName.Folder">
MainPage.xaml
<Page
xmlns:CustomPrefix="using:ProjectName.Folder">
<CustomPrefix:UserControl />
</Page>
The project needs to be built to discard XAML errors in Visual Studio, otherwise the design view remains blank and the XAML has green squiggles.
PROBLEM:
I have a blank Image control named "Image1".
Now, I want to supply a Source to that Image at runtime base on the selected item on my ListBox (ListBoxSource).
How will I do that in "ListBoxSource_SelectionChanged(...)" event?
private void ListBoxSource_SelectionChanged(object sender, System.Windows.Controls.SelectionChangedEventArgs e)
{
//...Some conditional statement in here which determines what image to set or update its Image source
this.Image1.Source = ??? What to supply in here
}
NOTE: I know how to do this using Binding BUT I know only using another ListBox to show my selected items. This time I use a Grid(2 rows and 2 columns: each cell has a blank Image control in it) for the purpose of supplying each grid cell with the ListBoxSource selected Image item.
OR Can I use some binding to this using Grid? My other purpose is also to be able to control the Image in different sizes (meaning some image will span rows/columns inside a Grid).
Here is my XAML:
<Window.Resources>
<DataTemplate x:Key="ItemTemplate">
<StackPanel>
<Image Source="{Binding FileFullName}" HorizontalAlignment="Left" Height="64" Width="64"/>
<TextBlock Text="{Binding FileName}"/>
</StackPanel>
</DataTemplate>
</Window.Resources>
<Grid x:Name="LayoutRoot" DataContext="{Binding Source={StaticResource SampleDataSource}}">
<ListBox x:Name="ListBoxSource" HorizontalAlignment="Left" ItemTemplate="{DynamicResource ItemTemplate}" ItemsSource="{Binding Collection}" Margin="29,31,0,31" Width="257" SelectionMode="Multiple" SelectionChanged="listBoxSource_SelectionChanged"/>
<Grid x:Name="GridImageHolder" Height="270" Margin="338,44,0,0" VerticalAlignment="Top" Background="#FFE0D6D6" ShowGridLines="True" DataContext="{Binding SelectedItem, ElementName=listBoxSource}" d:DataContext="{Binding Collection[0]}" HorizontalAlignment="Left" Width="539">
<Grid.RowDefinitions>
<RowDefinition Height="130"/>
<RowDefinition Height="140"/>
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="267.883"/>
<ColumnDefinition Width="271.117"/>
</Grid.ColumnDefinitions>
<Image x:Name="Image1" Grid.Row="0" Grid.Column="0" Margin="8,0.96,21.883,8"/>
<Image x:Name="Image2" Grid.Row="0" Grid.Column="1" HorizontalAlignment="Left" Margin="19.975,0,0,8" Width="218"/>
<Image x:Name="Image3" Grid.Row="1" Grid.Column="0" Margin="8,21.04,40.883,16"/>
<Image x:Name="Image4" Grid.Row="1" Grid.Column="1" Margin="8,21.04,33.117,16" />
</Grid>
</Grid>
In the event you need to cast the sender to the appropriate class.