We Keep Coding

Customizing the Time-Picker in C#/UWP

Ok, I have looked everywhere and cannot seem to find someone who has answered this question. I want to customize the timepicker control in UWP, and by customize I mean I don't want it to be a clock.
I need a GUI that allows the user to scroll through a looping menu, much like the timepicker does, but I couldn't figure out a way to change the timepicker control so that it will show other values besides Hour/Minute/AM-PM. I also tried to use a combobox with a carousel panel and items inside it, but it did not render the effect that I am looking for. I would really appreciate it if somebody could A.) Tell me if there is a way I can change the timepicker, or B.) Point me in the direction of a control that would render that scrolling/looping effect that I am looking for. I don't need anybody to do my work for me, just a small push in the right direction.
To be clear I want the menu to have the same effect as the Windows Alarm Setter, also portrayed by the Alarm and Time setter on iPhones if that helps with a visual.

You can create a basic handmade control that has 4 listview for example.
Here a quick example :
<Button Content="Set localisation" HorizontalAlignment="Center" VerticalAlignment="Center">
<Button.Flyout>
<Flyout Opened="Flyout_Opened">
<StackPanel Orientation="Horizontal" VerticalAlignment="Center" HorizontalAlignment="Center">
<Grid MaxHeight="150" MinWidth="100">
<ListView ItemsSource="{x:Bind Degrees,Mode=OneWay}" SelectedIndex="{x:Bind SelectedDegrees,Mode=TwoWay}" >
<ListView.ItemsPanel>
<ItemsPanelTemplate>
<ItemsStackPanel ItemsUpdatingScrollMode="KeepItemsInView" />
</ItemsPanelTemplate>
</ListView.ItemsPanel>
<ListView.ItemTemplate>
<DataTemplate>
<TextBlock Text="{Binding}"/>
</DataTemplate>
</ListView.ItemTemplate>
</ListView>
</Grid>
<Grid MaxHeight="150" MinWidth="100">
<ListView ItemsSource="{x:Bind Minutes,Mode=OneWay}" SelectedIndex="{x:Bind SelectedMinutes,Mode=TwoWay}">
<ListView.ItemsPanel>
<ItemsPanelTemplate>
<ItemsStackPanel ItemsUpdatingScrollMode="KeepItemsInView" />
</ItemsPanelTemplate>
</ListView.ItemsPanel>
<ListView.ItemTemplate>
<DataTemplate>
<TextBlock Text="{Binding}"/>
</DataTemplate>
</ListView.ItemTemplate>
</ListView>
</Grid>
<Grid MaxHeight="150" MinWidth="100">
<ListView ItemsSource="{x:Bind Seconds,Mode=OneWay}" SelectedIndex="{x:Bind SelectedSeconds,Mode=TwoWay}">
<ListView.ItemsPanel>
<ItemsPanelTemplate>
<ItemsStackPanel ItemsUpdatingScrollMode="KeepItemsInView" />
</ItemsPanelTemplate>
</ListView.ItemsPanel>
<ListView.ItemTemplate>
<DataTemplate>
<TextBlock Text="{Binding}"/>
</DataTemplate>
</ListView.ItemTemplate>
</ListView>
</Grid>
<Grid MaxHeight="150" MinWidth="100">
<ListView ItemsSource="{x:Bind Hundredth,Mode=OneWay}" SelectedIndex="{x:Bind SelectedHundredth,Mode=TwoWay}">
<ListView.ItemsPanel>
<ItemsPanelTemplate>
<ItemsStackPanel ItemsUpdatingScrollMode="KeepItemsInView" />
</ItemsPanelTemplate>
</ListView.ItemsPanel>
<ListView.ItemTemplate>
<DataTemplate>
<TextBlock Text="{Binding}"/>
</DataTemplate>
</ListView.ItemTemplate>
</ListView>
</Grid>
</StackPanel>
</Flyout>
</Button.Flyout>
</Button>
With this C# code :
public ObservableCollection<int> Degrees = new ObservableCollection<int>
{
0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30
};
private int selectedDegrees = 0;
public int SelectedDegrees
{
get { return selectedDegrees; }
set { selectedDegrees = value; PropertyChanged?.Invoke(this, new ProportyChangedEventArgs(nameof(SelectedDegrees))); }
}
public ObservableCollection<int> Minutes = new ObservableCollection<int>
{
0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30
};
private int selectedMinutes = 0;
public int SelectedMinutes
{
get { return selectedMinutes; }
set { selectedMinutes = value; PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(nameof(SelectedMinutes))); }
}
public ObservableCollection<int> Seconds = new ObservableCollection<int>
{
0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30
};
private int selectedSeconds = 0;
public int SelectedSeconds
{
get { return selectedSeconds; }
set { selectedSeconds = value; PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(nameof(SelectedSeconds))); }
}
public ObservableCollection<int> Hundredth = new ObservableCollection<int>
{
0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30
};
private int selectedHundredth = 0;
public int SelectedHundredth
{
get { return selectedHundredth; }
set { selectedHundredth = value; PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(nameof(SelectedHundredth))); }
}
private async void Flyout_Opened(object sender, object e)
{
await Task.Delay(100);
SelectedDegrees = 5;
SelectedMinutes = 4;
SelectedSeconds = 3;
SelectedHundredth = 1;
}
Here is the look it gives :
Carousel
At the time of writting those line, there isn't any looping/carousel in listview. But there is one in Combobox, I would then suggest to use a combobox instead of a ListView Control.
<ComboBox ItemsSource="{x:Bind Degrees,Mode=OneWay}" SelectedIndex="{x:Bind SelectedDegrees,Mode=TwoWay}" IsDropDownOpen="True">
<ComboBox.ItemsPanel>
<ItemsPanelTemplate>
<CarouselPanel />
</ItemsPanelTemplate>
</ComboBox.ItemsPanel>
<ComboBox.ItemTemplate>
<DataTemplate>
<TextBlock Text="{Binding}"/>
</DataTemplate>
</ComboBox.ItemTemplate>
</ComboBox>

Hide GridViewItem and reposition items in GridView

As you can see above, I need it to reshuffle itself into alignment. Obviously the items still exist, is there a way to completely ignore them?
I have an ObservableCollection:
public static volatile ObservableCollection<MyVideo> MyVideoModels = new ObservableCollection<MyVideo>();
This gets filled with the MyVideo objects.
Binding it to my GridView like so:
public VideosFoundView()
{
this.InitializeComponent();
this.AddVideoFolderGridView.ItemsSource = VideosFoundView.MyVideoModels;
}
The DataTemplate I am using for the GridView.
<GridView Grid.Row="2" Background="{ThemeResource ApplicationPageBackgroundThemeBrush}" x:Name="AddVideoFolderGridView">
<GridView.ItemTemplate>
<DataTemplate>
<Border BorderThickness="5">
<Image Source="{Binding FullImageLocationOnDisk}" MaxHeight="300" MaxWidth="200" DoubleTapped="gridViewItem_DoubleTapped" Loaded="gridViewItem_Loaded" Loading="gridViewItem_Loading">
</Image>
</Border>
</DataTemplate>
</GridView.ItemTemplate>
</GridView>
And I have a static ToggleSwitch above this GridView like so:
<Grid Grid.Row="1">
<Grid>
<TextBlock Text="Ingore Image Not Found"/>
<ToggleSwitch x:Name="ToggleSwitchIgnoreImages" Toggled="ignoreImages_Toggled"/>
</Grid>
</Grid>
Which does:
private void ignoreImages_Toggled(object sender, RoutedEventArgs e)
{
ToggleSwitch tSwitch = (ToggleSwitch)(sender as ToggleSwitch);
if (tSwitch.IsOn)
{
for(int i = 0; i < VideosFoundView.MyVideoModels.Count; i++)
{
if(VideosFoundView.MyVideoModels[i].FullImageLocationOnDisk == "ms-appx:///Assets/image-not-found.gif")
{
var gridViewItem = (GridViewItem)this.AddVideoFolderGridView.ContainerFromIndex(i);
gridViewItem.Visibility = Visibility.Collapsed;
}
}
}
else
{
for (int i = 0; i < VideosFoundView.MyVideoModels.Count; i++)
{
//VideosFoundView.MyVideoModels[i].Visibility = "Auto";
var gridViewItem = (GridViewItem)this.AddVideoFolderGridView.ContainerFromIndex(i);
gridViewItem.Visibility = Visibility.Visible;
}
}
}
However the problem is that the items are still taking up space on my GridView, and the other items do not re-position themselves accordingly.

The items are still taking up space on the GridView, when the GridViewItem is collapsed. It might because the ItemTemplate has not be refreshed, the space is still reserved.
As a workaround, there is a port of the Toolkit's WrapPanel for UWP in the project WinRTXamlToolkit.
You can get it from NuGet.
Then in your Page add this prefix:
xmlns:toolkit="using:WinRTXamlToolkit.Controls"
Now you can use <toolkit:WrapPanel Orientation="Horizontal" ></toolkit:WrapPanel> as it was before.
For example:
<GridView x:Name="AddVideoFolderGridView">
<GridView.ItemsPanel>
<ItemsPanelTemplate>
<toolkit:WrapPanel Orientation="Horizontal" >
</toolkit:WrapPanel>
</ItemsPanelTemplate>
</GridView.ItemsPanel>
<GridView.ItemTemplate>
<DataTemplate>
<Border BorderThickness="5">
<Image Source="{Binding FullImageLocationOnDisk}" MaxHeight="300" MaxWidth="200" DoubleTapped="gridViewItem_DoubleTapped" Loaded="gridViewItem_Loaded" Loading="gridViewItem_Loading">
</Image>
</Border>
</DataTemplate>
</GridView.ItemTemplate>
</GridView>

Solution from here: Not showing items with Visibility=Collapsed in Windows 8.1 GridView
tldr:
Edit the template of your GridView and replace the ItemsWrapGrid in the ItemsPanelTemplate with the WrapPanel you can find here http://codepaste.net/8gr5go

Retrieve data from a listview

In my Windows store app there is a list view which is using an item source to get data. It looks like this:
<ListView x:Name="lsvLinks" IsItemClickEnabled="True"
SelectionMode="Single"
ItemsSource="{Binding Source={StaticResource cvs2}}" ItemClick="lsvLinks_ItemClick" >
<ListView.ItemsPanel>
<ItemsPanelTemplate>
<WrapGrid Orientation="Vertical" HorizontalChildrenAlignment="left"/>
</ItemsPanelTemplate>
</ListView.ItemsPanel>
<ListView.ItemContainerStyle>
<Style TargetType="ListViewItem">
<Setter Property="Padding" Value="0"/>
<Setter Property="Margin" Value="-7.5"/>
</Style>
</ListView.ItemContainerStyle>
<ListView.ItemTemplate>
<DataTemplate>
<StackPanel Orientation="Horizontal" Width="340" Height="32" Background="#FFBE9CDE" HorizontalAlignment="Left">
<StackPanel Width="255" VerticalAlignment="Center" Margin="15,0,0,0">
<TextBlock Text="{Binding Link}" Foreground="{Binding Color}" FontSize="15" Margin="0,3,0,0" FontWeight="Normal" VerticalAlignment="Center" HorizontalAlignment="Left"/>
</StackPanel>
<StackPanel Width="50" VerticalAlignment="Center" Margin="0,0,0,0">
<Button x:Name="btnRemove" Width="30" Height="30" Margin="20,0,0,0" ToolTipService.ToolTip="Remove" Click="btnRemove_click">
<Button.Template>
<ControlTemplate>
<Image Source="Assets/cancel.png" Width="30" Height="30"/>
</ControlTemplate>
</Button.Template>
</Button>
</StackPanel>
</StackPanel>
</DataTemplate>
</ListView.ItemTemplate>
</ListView>
My C# code
try {
IEnumerable < linkTable > obsCollection = (IEnumerable < linkTable > ) await webservice.getLinksStudentAsync(1);
linkList = new List < linkTable > (obsCollection);
int count = 1;
foreach(linkTable linkL in linkList) {
if (linkL.status.Equals("yes")) {
links.Add(new Collection {
ID = count, Link = linkL.link, Type = "Accept", Color = "green", BackColor = "#FFA27BC7"
});
} else if (linkL.status.Equals("no")) {
links.Add(new Collection {
ID = count, Link = linkL.link, Type = "Reject", Color = "Red", BackColor = "#FFA27BC7"
});
} else {
links.Add(new Collection {
ID = count, Link = linkL.link, Type = "Pending", Color = "White", BackColor = "#FFA27BC7"
});
}
count++;
}
cvs2.Source = links;
}
When a user selects an item in the listview, I need to retrieve its ID. But I don't understand how to do that. Can anyone tell me how to do that?

You'll need to add a SelectionChanged event to the ListView and implement it.
public void ItemSelected(object sender, SelectionChangedEventArgs args)
{
var item= lsvLinks.SelectedItem as Collection;
int ID = item.ID;
}
On your ListView you could add the event as below.
<ListView x:Name="lsvLinks" IsItemClickEnabled="True" SelectionMode="Single" ItemsSource="{Binding Source={StaticResource cvs2}}" SelectionChanged="ItemSelected" >

Create ItemTemplate for ListBox in code-beind in WPF

I'm trying to create an ItemTemplate for a ListBox programmatically but it doesn't work. I know in XAML I can have something like:
<ListBox x:Name="listbox" BorderThickness="0" Margin="6" Height="400">
<ListBox.ItemTemplate>
<DataTemplate>
<TextBlock Margin="0" Background="Red" Foreground="White" FontSize="18" Text="{Binding}" />
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
But when I'm trying to have the above result programmatically I face a problem which is binding the TextBox.TextProperty:
var textblock = new FrameworkElementFactory(typeof(TextBlock));
// Setting some properties
textblock.SetValue(TextBlock.TextProperty, ??);
var template = new ControlTemplate(typeof(ListBoxItem));
template.VisualTree = textblock;
Please help me on this issue. I couldn't find anything on the web about it.
Thanks in advance.

Try use dot . in Binding, this is the equivalent of {Binding}.
Example:
XAML
<Window x:Class="MyNamespace.MainWindow"
...
Loaded="Window_Loaded">
<ListBox Name="MyListBox" ... />
</Window>
Code-behind
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
}
private void Window_Loaded(object sender, RoutedEventArgs e)
{
var textBlockFactory = new FrameworkElementFactory(typeof(TextBlock));
textBlockFactory.SetValue(TextBlock.TextProperty, new Binding(".")); // Here
textBlockFactory.SetValue(TextBlock.BackgroundProperty, Brushes.Red);
textBlockFactory.SetValue(TextBlock.ForegroundProperty, Brushes.Wheat);
textBlockFactory.SetValue(TextBlock.FontSizeProperty, 18.0);
var template = new DataTemplate();
template.VisualTree = textBlockFactory;
MyListBox.ItemTemplate = template;
}
}

Try this, by binding the "listbox" with ItemsSource and specify the datatemplate below like if you want to bind name then just write {Binding Name}
<ListBox x:Name="listbox" BorderThickness="0" Margin="6" Height="400" ItemsSource="{Binding}">
<ListBox.ItemTemplate>
<DataTemplate>
<TextBlock Margin="0" Background="Red" Foreground="White" FontSize="18" Text="{Binding Name}" />
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>

wpf check list box

I m new to wpf.In order to get check list box functionality ,I have added below xaml to my code,but there is no output in my screen.only blank,what it could be?
<TabItem Header="Samples" >
<ListBox Margin="10" Width="373" Height="236">
<ListBox.ItemTemplate>
<DataTemplate>
<StackPanel Orientation="Horizontal">
<TextBlock Text="MyText"/>
<CheckBox IsChecked="False"/>
</StackPanel>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
</TabItem>

just have a look at this basic sample
http://merill.net/2009/10/wpf-checked-listbox/

List box is a bit wired for such task..Have a look at ItemsControl.
Here is the code i use:
<ItemsControl
ItemsSource="{Binding ***}" IsTabStop="False">
<ItemsControl.ItemTemplate>
<DataTemplate>
<CheckBox
Content="{Binding Name}"
IsChecked="{Binding IsSelected}" />
</DataTemplate>
</ItemsControl.ItemTemplate>
</ItemsControl>

Replace your code with this
<TabItem Header="Roles" >
<ListBox Margin="10" Width="373" Height="236">
<ListBox.ItemTemplate>
<DataTemplate>
<StackPanel Orientation="Horizontal">
<TextBlock Text="MyText"/>
<CheckBox IsChecked="False"/>
</StackPanel>
</DataTemplate>
</ListBox.ItemTemplate>
<ListBoxItem>Hi</ListBoxItem>
</ListBox>
</TabItem>
and tell us if it still shows blank

Better still, just use the new CheckListBox control in the Extended WPF Toolkit
http://wpftoolkit.codeplex.com/wikipage?title=CheckListBox&referringTitle=Home

This might help
1.Inorder to work datatemplate you must specify itemsource, here i have bounded a Stateslist a collection of items into it.
2.Also set the Datacontext to ViewModel or the CodeBehind as datacontext.
3.Datacontext will distribute the StateList properties collection to the listbox itemsource
using codebehind -
public Window1()
{
InitializeComponent();
this.DataContext = this;
LoadData();
}
using viewmodel
public Window1()
{
InitializeComponent();
DataContext = new Window1ViewModel();
LoadData();
}
//MyItemsource Property for listbox
private ObservableCollection<States> _stateslist;
public ObservableCollection<States> StatesList
{
get { return _stateslist; }
set
{
_stateslist = value;
RaisePropertyChanged(() => StatesList);
}
}
// Sample Data Loading
public void LoadData()
{
StatesList = new ObservableCollection<States>();
StatesList.Add(new States
{
StateName = "Kerala"
});
StatesList.Add(new States
{
StateName = "Karnataka"
});
StatesList.Add(new States
{
StateName = "Goa"
});
}
Window1.Xaml
<ListBox ItemsSource="{Binding StatesList}" >
<ListBox.ItemTemplate>
<DataTemplate>
<StackPanel>
<CheckBox IsChecked="{Binding IsSelected"} Content="{Binding StateName}" />
<TextBox Text="{Binding TextBoxValue}" />
</StackPanel>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>

Check this out it isworking..you are using TabItem but you didnt define it in TabControl
<TabControl>
<TabItem Header="Tab1">
<ListBox Margin="10" Width="373" Height="236">
<ListBox.Items>
<StackPanel Orientation="Horizontal">
<TextBlock Text="MyText"/>
<CheckBox IsChecked="False"/>
</StackPanel>
</ListBox.Items>
</ListBox>
</TabItem>
</TabControl>
If you are new in WPF use XamlPadX it will give you great help to practice out on it..