I have an issue with the Loaded event of the window, so I am using NuGet package
I did everything required to use the package from this link https://devblogs.microsoft.com/dotnet/open-sourcing-xaml-behaviors-for-wpf/
My xaml:
<Window x:Class="TestDynamicWindow.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:b="http://schemas.microsoft.com/xaml/behaviors"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:local="clr-namespace:TestDynamicWindow" d:DataContext="{d:DesignInstance Type=local:MainViewModel}"
mc:Ignorable="d"
Title="UserWindow" Height="450" Width="800"
ResizeMode="NoResize"
Background="Bisque"
>
<b:Interaction.Triggers>
<b:EventTrigger EventName="Loaded">
<b:InvokeCommandAction
CommandParameter="{Binding ElementName=ButtonsListBox, Path=Items.Count}"
Command="{Binding LoadDataCommand}"/>
</b:EventTrigger>
</b:Interaction.Triggers>
Window's DataContext is MainViewModel class:
public class MainViewModel
{
private readonly string path = $"{Environment.CurrentDirectory}\\LogInModels.xml";
public ObservableCollection<LinkModel> linkModels { get; set; } = new ObservableCollection<LinkModel>();
public ObservableCollection<LogInModel> LogInModels { get; set; }
public ICommand LoadDataCommand { get; set; }
public ICommand AddLinkCommand { get; set; }
public MainViewModel()
{
this.LoadDataCommand = new CommandInterface(LoadData, CanLoadData);
this.AddLinkCommand = new CommandInterface(AddLink, CanAddLink);
}
#region LoadDataMethods
public void LoadData(object parameter)
{
SaveOrGetData saveOrGet = new SaveOrGetData(path);
LogInModels = saveOrGet.GetData();
for(int i = 0; i < LogInModels.Count; i++)
{
LinkModel lm = new LinkModel(parameter);
linkModels.Add(lm);
}
}
public bool CanLoadData(object parameter)
{
return true;
}
}
As you can see in the MainViewModel constructor LoadDataCommand should fire LoadData() method, but I put a breakpoint on that line, and when the Window is loaded nothing happens. I don't get any error, it just simply doesn't work. I am new to this concept so I don't know what is going wrong. I think I am using InteractionTriggers in the wrong way but can't find anything that would help to use it in a proper way.
CommandInterface class is just class that implements ICommand
class CommandInterface : ICommand
{
Action<object> executeMethod;
Func<object, bool> canExecuteMethod;
public CommandInterface(Action<object> executeMethod, Func<object, bool> canExecuteMethod)
{
this.executeMethod = executeMethod;
this.canExecuteMethod = canExecuteMethod;
}
public bool CanExecute(object parameter)
{
return true;
}
public void Execute(object parameter)
{
executeMethod(parameter);
}
public event EventHandler CanExecuteChanged;
}
