I'm trying to display information from my ObservableCollection<MyData> in a ListView. MyData has:
string Name
string Location
int Progress
Using DataBinding, I'm able to display the Name and Location for all the items in my ObservableCollection<MyData> in their own column. But how can I add a Progress column with a ProgressBar inside? Progress is a percentage.
<ListView ItemsSource="{Binding PersonList}">
<ListView.View>
<GridView>
<GridViewColumn Width="140" Header="GameName" DisplayMemberBinding="{Binding Name}"/>
<GridViewColumn Width="140" Header="Progress">
<GridViewColumn.CellTemplate>
<DataTemplate>
<ProgressBar Maximum="100" Value="{Binding Progress}"/>
</DataTemplate>
</GridViewColumn.CellTemplate>
</GridViewColumn>
</GridView>
</ListView.View>
</ListView>
Your ListView in XAML:
<ListView x:Name="DataView">
<ListView.ItemTemplate>
<DataTemplate>
<StackPanel>
<Label Content="{Binding Path=Name}" />
<ProgressBar Height="20" Width="100" Value="{Binding Path=Progress}" />
</StackPanel>
</DataTemplate>
</ListView.ItemTemplate>
</ListView>
Code-behind:
internal class MyData
{
public string Name { get; set; }
public int Progress { get; set; }
}
...
var items = new ObservableCollection<MyData>();
items.Add(new MyData() { Name = "Some", Progress = 25 });
items.Add(new MyData() { Name = "Another", Progress = 91 });
DataView.ItemsSource = items;
Just bind Progress property in MyData to the ProgressBar.Value and set the expected MAX value as the ProgressBar.Maximum for example 50 below
<ProgressBar Maximum="50" Value="{Binding Progress}" ..
Related
I have a ListView with some Columns. One of Column contains two RadioButton.When i checked Radiobutton,i want change the binding value of the last column(it's header Name is Fee).I have no idea,can someone help me ?
<ListView x:Name="lvTimeView">
<ListView.View>
<GridView>
<GridView.Columns>
<GridViewColumn Header="ID" Width="175" DisplayMemberBinding="{Binding serverId}"></GridViewColumn>
<GridViewColumn Header="IP" Width="175" DisplayMemberBinding="{Binding serverIp}"></GridViewColumn>
<GridViewColumn x:Name="gvcTime" Header="Time" Width="400">
<GridViewColumn.CellTemplate>
<DataTemplate>
<StackPanel Orientation="Horizontal" Height="30">
<RadioButton x:Name="rbOneMonth" Tag="1" Checked="rbChecked" Style="{StaticResource BoxRadioButton}" HorizontalAlignment="Left">OneMonth</RadioButton>
<RadioButton x:Name="rbTwoMonth" Tag="2" Margin="8,0,0,0" Checked="rbChecked" Style="{StaticResource BoxRadioButton}" HorizontalAlignment="Left">TwoMonth</RadioButton>
</StackPanel>
</DataTemplate>
</GridViewColumn.CellTemplate>
</GridViewColumn>
<GridViewColumn Header="Fee" Width="100" DisplayMemberBinding="{Binding fee}">
</GridViewColumn>
</GridView.Columns>
</GridView>
</ListView.View>
</ListView>
First, forget about events in this example. This is a perfect example to leverage WPF binding...
Change your XAML to this.
<ListView ItemsSource="{Binding Items}">
<ListView.View>
<GridView>
<GridView.Columns>
<GridViewColumn Header="ID" Width="175" DisplayMemberBinding="{Binding ServerId}"></GridViewColumn>
<GridViewColumn Header="IP" Width="175" DisplayMemberBinding="{Binding ServerIp}"></GridViewColumn>
<GridViewColumn Header="Time">
<GridViewColumn.CellTemplate>
<DataTemplate>
<StackPanel Orientation="Horizontal">
<RadioButton GroupName="{Binding ServerId}" IsChecked="{Binding OneMonth}">OneMonth</RadioButton>
<RadioButton GroupName="{Binding ServerId}" IsChecked="{Binding TwoMonth}" Margin="5,0,0,0">TwoMonth</RadioButton>
</StackPanel>
</DataTemplate>
</GridViewColumn.CellTemplate>
</GridViewColumn>
<GridViewColumn Header="Fee" Width="100" DisplayMemberBinding="{Binding Fee}">
</GridViewColumn>
</GridView.Columns>
</GridView>
</ListView.View>
</ListView>
Pay attention to RadioButtons GroupName property. This is just so the radio buttons know they are a part of a radio button group so when you select one the other one unselects. We have to set this to something unique per row so I chose serverId. I hope this is unique in your case otherwise you will have to generate some Guid or something...
Next is the model...
public class Item : INotifyPropertyChanged
{
private string _serverId;
private string _serverIp;
private bool _oneMonth;
private bool _twoMonth;
private decimal _fee;
public event PropertyChangedEventHandler PropertyChanged;
public string ServerId
{
get => _serverId;
set
{
_serverId = value;
OnPropertyChanged(nameof(ServerId));
}
}
public string ServerIp
{
get => _serverIp;
set
{
_serverIp = value;
OnPropertyChanged(nameof(ServerIp));
}
}
public bool OneMonth
{
get => _oneMonth;
set
{
_oneMonth = value;
if(value)
Fee = 100;
OnPropertyChanged(nameof(OneMonth));
}
}
public bool TwoMonth
{
get => _twoMonth;
set
{
_twoMonth = value;
if(value)
Fee = 200;
OnPropertyChanged(nameof(TwoMonth));
}
}
public decimal Fee
{
get => _fee;
set
{
_fee = value;
OnPropertyChanged(nameof(Fee));
}
}
protected void OnPropertyChanged(string propertyName)
{
PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
}
}
Instantiate the model and add it to the data context...
public partial class MainWindow : Window
{
public IEnumerable<Item> Items => new Item[]
{
new Item { ServerId = "asia", ServerIp = "10.1.1.45" },
new Item { ServerId = "europe", ServerIp = "45.1.4.211" },
new Item { ServerId = "australia", ServerIp = "37.2.1.181" }
};
public MainWindow()
{
InitializeComponent();
DataContext = this;
}
}
I am facing some problem with binding the data to the controls in ListView/GridView as ListViweItem.
Requirement: Have to show a checkbox, Label, DropDown and a textbox per row which get data from all different sources.Here is the sample class:
class Data {
public CheckBox chk_box;
public Label lbl;
public ComboBox cmb_box;
public TextBox t_box;
public Data(String lbl_Data,List<String> cmb_box_Data) {
chk_box=new CheckBox();
lbl=new Label();
lbl.Content=lbl_Data;
cmb_box=new ComboBox();
cmb_box.ItemsSource=cmb_box_Data;
chk_box.Click += new RoutedEventHandler(chk_box_clicked);
...
}
private void chk_box_clicked(object Sender, RoutedEventArgs e){
if(chk_box.IsChecked == true) cmb_box.IsEnabled = false;
else cmb_box.IsEnabled = true;
}
}
Now i need to add this class' object as a ListViewItem, per control per column in ListView/GridView - dynamically, row by row and then after user makes selections access all the rows once again row by row and get values from these controls.
XAML code:
<ListView x:Name="TestGrid">
<ListView.View>
<GridView>
<GridViewColumn Header=" Select "/>
<GridViewColumn Header=" Label "/>
<GridViewColumn Header=" cmb_box "/>
<GridViewColumn Header=" t_box "/>
</GridView>
</ListView.View>
</ListView>
Since, the Items Source for all the controls is different, i cannot use ListView.ItemsSorce to bind data. Please suggest suitable options, or ways to accomplish the desired UI. I would like to make everything out from the controls given in VS only without using a third party dll(if possible).
Thank you for your time and suggestions in advance.
Check msdn.microsoft.com for binding
public class Datum
{
public bool Select { get; set; }
public string Name { get; set; }
public List<string> Items { get; set; }
}
<ListView ItemsSource="{Binding}">
<ListView.View>
<GridView>
<GridView.Columns>
<GridViewColumn Header="Select">
<GridViewColumn.CellTemplate>
<DataTemplate>
<CheckBox IsChecked="{Binding Path=Select, Mode=OneWay}"/>
</DataTemplate>
</GridViewColumn.CellTemplate>
</GridViewColumn>
<GridViewColumn Header="Name">
<GridViewColumn.CellTemplate>
<DataTemplate>
<TextBlock Text="{Binding Path=Name, Mode= OneWay}"/>
</DataTemplate>
</GridViewColumn.CellTemplate>
</GridViewColumn>
<GridViewColumn Header="Name">
<GridViewColumn.CellTemplate>
<DataTemplate>
<ComboBox ItemsSource="{Binding Path=Items}"/>
</DataTemplate>
</GridViewColumn.CellTemplate>
</GridViewColumn>
</GridView.Columns>
</GridView>
</ListView.View>
</ListView>
I have UserControl(AllCustomerView) in project and its Viewmodel as ALlCustomerViewModel consists a property as SearchText.
SearchText is selected value for TextBox inside a listview in UserControl.
SearchItem is set as customerViewmdel for SearchText.
But in listview , SearchItem is not set as selected
in AllCustomerView.xaml
<TextBlock>
<TextBox
Width="150"
Text="{Binding Path=SearchText, UpdateSourceTrigger=PropertyChanged, Mode=TwoWay}">
</TextBox>
<Button
Command="{Binding Path=SearchCommand}"
Content=" Search ">
</Button>
</TextBlock>
<ListView
SelectedValue="{Binding Path=SearchText}"
ItemsSource="{Binding Path=AllCustomers}"
FontFamily="Tahoma"
FontSize="14"
ItemContainerStyle="{StaticResource CustomerItemStyle}"
IsSynchronizedWithCurrentItem="True">
<ListView.View>
<GridView>
<GridViewColumn>
<GridViewColumn.CellTemplate>
<DataTemplate>
<Button
Command="{Binding ElementName=Root, Path=DataContext.DeleteCommand}"
Content="x"
FontFamily="Tahoma"
FontSize="10"
/>
</DataTemplate>
</GridViewColumn.CellTemplate>
</GridViewColumn>
<GridViewColumn>
<GridViewColumn.CellTemplate>
<DataTemplate>
<Button
FontFamily="Tahoma"
FontSize="10"
Content="Edit"
Command="{Binding Path=DataContext.Editcommand,ElementName=Root}"
/>
</DataTemplate>
</GridViewColumn.CellTemplate>
</GridViewColumn>
<GridViewColumn
Header="CustomerID"
Width="130"
DisplayMemberBinding="{Binding Path=CustomerID}"/>
<GridViewColumn
Header="Contact Name"
Width="130"
DisplayMemberBinding="{Binding Path=ContactName}"/>
<GridViewColumn
Header="Company Name"
Width="130"
DisplayMemberBinding="{Binding Path=CompanyName}"/>
<GridViewColumn
Width="130"
Header="Contact Name"
DisplayMemberBinding="{Binding Path=ContactTitle}"
/>
</GridView>
</ListView.View>
</ListView>
and its viewmodel(AllcustomerViewModel.cs)
public ICommand SearchCommand
{
get
{
if (_search == null)
_search = new Relaycommand(SearchCustomer);
return _search;
}
}
public void SearchCustomer(object o)
{
System.Windows.Forms.MessageBox.Show(SearchItem.ToString());
}
public string searchText;
public string SearchText
{
get { return searchText; }
set
{
searchText = value;
var customerExsits = AllCustomers.Where(q => q.CustomerID.Trim().Equals(searchText));
if (customerExsits.Any())
{
SearchItem = customerExsits.Single();
}
}
}
public CustomerViewModel SearchItem
{
get;
set;
}
what should i set in SelectedValue in ListView, whether to set Customerviewmodel(as SelectedItem) or to set CustomerID(as SearchText)?
You should do the following:
Use this binding in your ListView: SelectedItem="{Binding Path=SearchItem }". Don't use SelectedValue.
Implement INotifyPropertyChanged in your ViewModel and raise the PropertyChanged event in the setter of the SearchItem property. Obviously, you need to change this property from an automatic one to a classical one with a backing field:
public CustomerViewModel SearchItem
{
get { return _searchItem; }
set
{
if(value == _searchItem)
return;
_searchItem = value;
RaisePropertyChanged("SearchItem");
}
}
i have a listview template and one column is a button. I need selected item when i click in this button. How i can do this ??
To cature the selected ListView item inside a button pressed event you can leverage the MVVM pattern. In my ListView, in the XAML, I bind the ItemsSource and SelectedItem to a ViewModel class. I also bind my button Command in the template to RunCommand in the ViewModel.
The tricky part is getting the binding correct from the template to the active DataContext.
Once you do this you can capture the SelectedCustomer inside the RunCommand that
gets executed when the button gets pressed.
I've included some of the code to help get you started.
You can find implementations of ViewModelBase and DelegateCommand via Google.
Here is the XAML:
<Window x:Class="ListViewScrollPosition.Views.MainView"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="Main Window" Height="400" Width="400">
<Grid>
<ListView ItemsSource="{Binding Path=Customers}"
SelectedItem="{Binding Path=SelectedCustomer}"
Width="Auto">
<ListView.View>
<GridView>
<GridViewColumn Header="First Name">
<GridViewColumn.CellTemplate>
<DataTemplate>
<StackPanel Margin="6,2,6,2">
<TextBlock Text="{Binding FirstName}"/>
</StackPanel>
</DataTemplate>
</GridViewColumn.CellTemplate>
</GridViewColumn>
<GridViewColumn Header="Last Name">
<GridViewColumn.CellTemplate>
<DataTemplate>
<StackPanel Margin="6,2,6,2">
<TextBlock Text="{Binding LastName}"/>
</StackPanel>
</DataTemplate>
</GridViewColumn.CellTemplate>
</GridViewColumn>
<GridViewColumn Header="Address">
<GridViewColumn.CellTemplate>
<DataTemplate>
<StackPanel Margin="6,2,6,2">
<Button Content="Address"
Command="{Binding
Path=DataContext.RunCommand,
RelativeSource=
{RelativeSource FindAncestor,
AncestorType={x:Type ItemsControl}}}"/>
</StackPanel>
</DataTemplate>
</GridViewColumn.CellTemplate>
</GridViewColumn>
</GridView>
</ListView.View>
</ListView>
</Grid>
</Window>
Here is the ViewModel:
using System.Collections.ObjectModel;
using System.Windows.Input;
using ListViewScrollPosition.Commands;
using ListViewScrollPosition.Models;
namespace ListViewScrollPosition.ViewModels
{
public class MainViewModel : ViewModelBase
{
public ICommand RunCommand { get; private set; }
public MainViewModel()
{
RunCommand = new DelegateCommand<object>(OnRunCommand, CanRunCommand);
_customers = Customer.GetSampleCustomerList();
_selectedCustomer = _customers[0];
}
private ObservableCollection<Customer> _customers =
new ObservableCollection<Customer>();
public ObservableCollection<Customer> Customers
{
get
{
return _customers;
}
}
private Customer _selectedCustomer;
public Customer SelectedCustomer
{
get
{
return _selectedCustomer;
}
set
{
_selectedCustomer = value;
OnPropertyChanged("SelectedCustomer");
}
}
private void OnRunCommand(object obj)
{
// use the SelectedCustomer object here...
}
private bool CanRunCommand(object obj)
{
return true;
}
}
}
Here is where I link in the ViewModel to the View:
public partial class MainView : Window
{
public MainView()
{
InitializeComponent();
DataContext = new ViewModels.MainViewModel();
}
}
Example with a regular click event in the code behind:
<ListView Height="167.96" VerticalAlignment="Top" ItemsSource="{Binding FulfillmentSchedules}" SelectedItem="{Binding SelectedFulfillmentSchedule}">
<ListView.View>
<GridView>
<GridViewColumn Header="Request">
<GridViewColumn.CellTemplate>
<DataTemplate>
<TextBlock>
<TextBlock.Text>
<MultiBinding StringFormat="{}{0}-{1}-{2}">
<Binding Path="Template.ProjectNumber" />
<Binding Path="Template.JobNumber" />
<Binding Path="Template.RequestId" />
</MultiBinding>
</TextBlock.Text>
</TextBlock>
</DataTemplate>
</GridViewColumn.CellTemplate>
</GridViewColumn>
<GridViewColumn Header="Template" DisplayMemberBinding="{Binding Template.Name}"/>
<GridViewColumn Header="Start Date" DisplayMemberBinding="{Binding StartDate}"/>
<GridViewColumn Header="Records" DisplayMemberBinding="{Binding Parameters.Records}"/>
<GridViewColumn>
<GridViewColumn.CellTemplate>
<DataTemplate>
<Button Name="BtnYourButton" Content="Your Button" Click="BtnYourButton_Click" />
</DataTemplate>
</GridViewColumn.CellTemplate>
</GridViewColumn>
</GridView>
</ListView.View>
</ListView>
Code behind:
private void BtnYourButton_Click(object sender, RoutedEventArgs e)
{
var boundData= (YourBoundDataType)((Button)sender).DataContext;
//do what you need to do here, including calling other methods on your VM
}
Note: While I certainly appreciate MVVM, I've come to accept that there is a pretty steep slope of dimminishing returns once you cross into actions and messaging between the form and the VM, so I use it only in cases of complex relationships between VMs or large singular VMs. For CRUD style data-centric applications I prefer to handle actions and message relay with the code behind.
I'm still learning WPF, but I'm really confused about something that should be really simple. What I want to do is to center the contents of the 3rd and 4th columns. When I run this, the columns are left justified:
<ListView Margin="0" x:Name="listMonitoredUrls" AlternationCount="1"
ItemsSource="{Binding}" >
<ListView.View>
<GridView>
<GridViewColumn Header="Description" DisplayMemberBinding="{Binding FriendlyDesc}"/>
<GridViewColumn Header="Url" DisplayMemberBinding="{Binding Url}"/>
<GridViewColumn Header="Frequency">
<GridViewColumn.CellTemplate >
<DataTemplate>
<TextBlock Text="{Binding ScanFrequencyMinutes}"
HorizontalAlignment="Center"/>
</DataTemplate>
</GridViewColumn.CellTemplate>
</GridViewColumn>
<GridViewColumn Header="Next Scan" >
<GridViewColumn.CellTemplate >
<DataTemplate>
<TextBlock Text="{Binding TimeNextScanStr}"
HorizontalAlignment="Center"/>
</DataTemplate>
</GridViewColumn.CellTemplate>
</GridViewColumn>
</GridView>
</ListView.View>
</ListView>
I"m really starting to like WPF, but some simple things like this seem to be really hard.
Try using the TextAlignment property instead of HorizontalAlignment - should do it.
To my understanding HorizontalAlignment="Center" will center your textblock not the text in it.
This might be a long shot but i've had to do it for listboxes where the items are defined by templates. Try setting the HorizontalContentAlignment="Stretch" on your ListView. If I don't set that the items take only as much space as they need and are left justified.
I've created a solution which works under the common scenario of:
<GridViewColumn Header="Some Property" DisplayMemberBinding="{Binding SomeProperty}" />
where one only wants a simple DisplayMemberBinding with text without having to specify a CellTemplate
the new code uses an attached property and becomes:
<GridViewColumn Header="Some Property" DisplayMemberBinding="{Binding SomeProperty}"
ctrl:GridViewExtensions.IsContentCentered="True" />
attached property code:
public static class GridViewExtensions
{
#region IsContentCentered
[Category("Common")]
[AttachedPropertyBrowsableForType(typeof(GridViewColumn))]
public static bool GetIsContentCentered(GridViewColumn gridViewColumn)
{
return (bool)gridViewColumn.GetValue(IsContentCenteredProperty);
}
public static void SetIsContentCentered(GridViewColumn gridViewColumn, bool value)
{
gridViewColumn.SetValue(IsContentCenteredProperty, value);
}
public static readonly DependencyProperty IsContentCenteredProperty =
DependencyProperty.RegisterAttached(
"IsContentCentered",
typeof(bool), // type
typeof(GridViewExtensions), // containing type
new PropertyMetadata(default(bool), OnIsContentCenteredChanged)
);
private static void OnIsContentCenteredChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
OnIsContentCenteredChanged((GridViewColumn)d, (bool)e.NewValue);
}
private static void OnIsContentCenteredChanged(GridViewColumn gridViewColumn, bool isContentCentered)
{
if (isContentCentered == false) { return; }
// must wait a bit otherwise GridViewColumn.DisplayMemberBinding will not yet be initialized,
new DispatcherTimer(TimeSpan.FromMilliseconds(100), DispatcherPriority.Normal, OnColumnLoaded, gridViewColumn.Dispatcher)
{
Tag = gridViewColumn
}.Start();
}
static void OnColumnLoaded(object sender, EventArgs e)
{
var timer = (DispatcherTimer)sender;
timer.Stop();
var gridViewColumn = (GridViewColumn)timer.Tag;
if (gridViewColumn.DisplayMemberBinding == null)
{
throw new Exception("Only allowed with DisplayMemberBinding.");
}
var textBlockFactory = new FrameworkElementFactory(typeof(TextBlock));
textBlockFactory.SetBinding(TextBlock.TextProperty, gridViewColumn.DisplayMemberBinding);
textBlockFactory.SetValue(TextBlock.TextAlignmentProperty, TextAlignment.Center);
var cellTemplate = new DataTemplate { VisualTree = textBlockFactory };
gridViewColumn.DisplayMemberBinding = null; // must null, otherwise CellTemplate won't be recognized
gridViewColumn.CellTemplate = cellTemplate;
}
#endregion IsContentCentered
}
Here is my example to show a working xaml:
<Window x:Class="WPF_Tutorial.Rich_text_controls.BlockUIContainerCenteredColumnSample"
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"
mc:Ignorable="d"
xmlns:self="clr-namespace:WPF_Tutorial.Rich_text_controls"
Title="BlockUIContainerCenteredColumnSample" Height="275" Width="300"
WindowStartupLocation="CenterScreen">
<Window.Resources>
<x:Array x:Key="UserArray" Type="{x:Type self:User}">
<self:User Name="John Doe" Age="42" />
<self:User Name="Jane May-Anne Josephine Renalds Doe" Age="36" />
</x:Array>
</Window.Resources>
<Grid>
<FlowDocumentScrollViewer>
<FlowDocument>
<Paragraph FontSize="36" Margin="0">Users</Paragraph>
<Paragraph FontStyle="Italic" TextAlignment="Left" FontSize="14" Foreground="Gray">Here's a list of our users, inside our FlowDocument, in a completely interactive ListView control!</Paragraph>
<BlockUIContainer>
<ListView BorderThickness="0" ItemsSource="{StaticResource UserArray}" HorizontalAlignment="Center">
<ListView.ItemContainerStyle>
<Style TargetType="ListViewItem">
<!-- This stretches out the TextBlock width to the column width -->
<Setter Property="HorizontalContentAlignment" Value="Stretch" />
</Style>
</ListView.ItemContainerStyle>
<ListView.View>
<GridView>
<GridViewColumn Header="Name" DisplayMemberBinding="{Binding Name}" Width="150" />
<GridViewColumn>
<GridViewColumnHeader Content="Age" Width="75" />
<GridViewColumn.CellTemplate>
<DataTemplate>
<TextBlock Text="{Binding Age}" TextAlignment="Center" />
</DataTemplate>
</GridViewColumn.CellTemplate>
</GridViewColumn>
</GridView>
</ListView.View>
</ListView>
</BlockUIContainer>
<Paragraph FontStyle="Italic" TextAlignment="Left" FontSize="14" Foreground="Gray">More content can go here...</Paragraph>
</FlowDocument>
</FlowDocumentScrollViewer>
</Grid>
</Window>
Notice the <ListView.ItemContainerStyle> block. It has the <Setter ....
Without this, as per AndyG's text, nothing will work the way you want.
This has been very frustrating trying to work out.
By the way, here is the backing-code for this xaml:
namespace WPF_Tutorial.Rich_text_controls
{
using System.Windows;
public partial class BlockUIContainerCenteredColumnSample : Window
{
public BlockUIContainerCenteredColumnSample()
{
InitializeComponent();
}
}
public class User
{
public int Age { get; set; }
public string Name { get; set; }
}
}
What you should see when run