PresentationBase 2.2.1

There is a newer version of this package available.
See the version list below for details.
Install-Package PresentationBase -Version 2.2.1
dotnet add package PresentationBase --version 2.2.1
<PackageReference Include="PresentationBase" Version="2.2.1" />
For projects that support PackageReference, copy this XML node into the project file to reference the package.
paket add PresentationBase --version 2.2.1
The NuGet Team does not provide support for this client. Please contact its maintainers for support.
#r "nuget: PresentationBase, 2.2.1"
#r directive can be used in F# Interactive, C# scripting and .NET Interactive. Copy this into the interactive tool or source code of the script to reference the package.
// Install PresentationBase as a Cake Addin
#addin nuget:?package=PresentationBase&version=2.2.1

// Install PresentationBase as a Cake Tool
#tool nuget:?package=PresentationBase&version=2.2.1
The NuGet Team does not provide support for this client. Please contact its maintainers for support.

ViewModels with bindable properties

// C# code
public class AwesomeViewModel : ViewModel
{
    private string _name;
  
    public string Name
    {
        get => _name;
        set => SetProperty(ref _name, value);
    }
}

<TextBox Text="{Binding Name, UpdateSourceTrigger=PropertyChanged}" />

... and with property validation

// C# code
public class AwesomeViewModel : ViewModel
{
    private string _name;

    public string Name
    {
        get => _name;
        set => SetProperty(ref _name, value, NameValidation);
    }

    private IEnumerable<string> NameValidation(string value)
    {
        if (string.IsNullOrEmpty(value))
            yield return "Name cannot be null or empty!";
        else if (value == "sungaila")
            yield return "Name cannot be stupid!";
    }
}

<TextBox Text="{Binding Name, UpdateSourceTrigger=PropertyChanged}" />

... and ViewModel collections

// C# code
public class AwesomeViewModel : ViewModel
{
    public ObservableViewModelCollection<ChildViewModel> Children { get; }
    
    public AwesomeViewModel()
    {
        Children = new ObservableViewModelCollection<ChildViewModel>(this);
        Children.Add(new ChildViewModel { Nickname = "Blinky" });
        Children.Add(new ChildViewModel { Nickname = "Pinky" });
        Children.Add(new ChildViewModel { Nickname = "Inky" });
        Children.Add(new ChildViewModel { Nickname = "Clyde" });
    }
}

<ListView ItemsSource="{Binding Children}">
    <ListView.ItemTemplate>
        <DataTemplate>
            <TextBlock Text="{Binding Nickname}" />
        </DataTemplate>
    </ListView.ItemTemplate>
</ListView>

Commands

Your command can be defined anywhere you want (as long as its assembly is referenced by the WPF application).

// C# code
public class AlertCommand : ViewModelCommand<AwesomeViewModel>
{
    public override void Execute(AwesomeViewModel parameter)
    {
        System.Windows.MessageBox.Show("You just clicked that button.");
    }

    public override bool CanExecute(AwesomeViewModel parameter)
    {
        return parameter.Name != "John Doe";
    }
}

The only reference needed is the x:Type in XAML. Important: Make sure to write CommandParameter before Command to avoid problems with CanExecute. Consider to create an issue for the .NET Core team (like this one) if you want this WPF bug fixed.


<Window x:Class="WpfApp.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:Core="clr-namespace:PresentationBase;assembly=PresentationBase"
        xmlns:local="clr-namespace:WpfApp">
        
        <Button CommandParameter="{Binding}"
                Command="{Core:CommandBinding {x:Type local:AlertCommand}}" />
</Window>

... and async commands

// C# code
public class AlertCommandAsync : ViewModelCommandAsync<AwesomeViewModel>
{
    protected override async Task ExecutionAsync(AwesomeViewModel parameter)
    {
        await Task.Run(() =>
        {
            System.Threading.Thread.Sleep(2000);
            System.Windows.MessageBox.Show("You clicked that button two seconds ago.");
        });
    }
}

<Window x:Class="WpfApp.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:Core="clr-namespace:PresentationBase;assembly=PresentationBase"
        xmlns:local="clr-namespace:WpfApp">
        
        <Button CommandParameter="{Binding}"
                Command="{Core:CommandBinding {x:Type local:AlertCommandAsync}}" />
</Window>

ValueConverters


<Window x:Class="WpfApp.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        xmlns:Converters="clr-namespace:PresentationBase.Converters;assembly=PresentationBase"
        xmlns:local="clr-namespace:WpfApp">
        
        <TextBox Visibility="{Binding Name, Converter={Converters:NullToVisibilityConverter}}" />
</Window>

ViewModels ↔ Data Transfer Objects conversion

// C# code of DTO class
public class AwesomeTransferDataObject
{
    public string PersonName { get; set; }

    public int PersonAge { get; set; }
}
// C# code of your ViewModel class
[Dto(typeof(AwesomeTransferDataObject))]
public class AwesomeViewModel : ViewModel
{
    private string _name;

    [DtoProperty(nameof(AwesomeTransferDataObject.PersonName))]
    public string Name
    {
        get => _name;
        set => SetProperty(ref _name, value);
    }

    private int _age;

    [DtoProperty(nameof(AwesomeTransferDataObject.PersonAge))]
    public int Age
    {
        get => _age;
        set => SetProperty(ref _age, value);
    }
}
// C# code of the conversion
var dto = new AwesomeTransferDataObject { PersonName = "John" };
var viewModel = dto.ToViewModel<AwesomeViewModel>();
if (viewModel.Name == "John")
    viewModel.Age = 33;
var dto2 = viewModel.ToDto<AwesomeTransferDataObject>();
  • .NETCoreApp 3.0

    • No dependencies.
  • .NETCoreApp 3.1

    • No dependencies.
  • .NETFramework 4.5

    • No dependencies.
  • .NETFramework 4.8

    • No dependencies.

NuGet packages

This package is not used by any NuGet packages.

GitHub repositories

This package is not used by any popular GitHub repositories.

Version Downloads Last updated
3.5.0 0 11/27/2021
3.4.0 224 1/6/2021
3.4.0-preview 170 11/11/2020
3.3.0 339 9/20/2020
3.2.0 191 8/24/2020
3.1.0 225 6/26/2020
3.0.0 244 5/20/2020
2.3.1 222 3/24/2020
2.3.0 260 1/19/2020
2.2.1 354 1/15/2020
2.2.0 256 1/4/2020
2.1.2 227 12/25/2019
2.0.3 253 12/22/2019

Debugging improvements: SourceLink support and sources embedded into symbol files.