⚠ Deprecated: Legacy
Suggested alternative: CommunityToolkit.Mvvm
A lightweight MVVM implementation targeting .NET Standard 2.0 and .NET 6.0.
Get Started
$ dotnet add package PresentationBase.CoreReadme
PresentationBase.Core
⚠ Deprecated: Legacy
Suggested alternative: CommunityToolkit.Mvvm
A lightweight MVVM implementation targeting .NET Standard 2.0 and .NET 6.0.
$ dotnet add package PresentationBase.Core PresentationBase.Core
A lightweight MVVM implementation targeting .NET Standard 2.0 and .NET 5.0.
It contains base implementations for view models, commands, data transfer object conversion and more.
Take a look at the Quick start in the wiki. Here are some basic examples for using PresentationBase.Core:
public class AwesomeViewModel : ViewModel
{
private string _name;
public string Name
{
get => _name;
set => SetProperty(ref _name, value);
}
}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!";
}
}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" });
}
}Your command can be defined anywhere you want (as long as its assembly is referenced by the application). Please note that a parameterless constructor (or none at all) is needed.
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";
}
}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.");
});
}
}