private async Task AddTaskButton_Clicked(object sender, EventArgs e)
{
AddProjectTaskViewModel addTaskViewModel = new AddProjectTaskViewModel();
addTaskViewModel.ProjectID = viewModel.ProjectID;
await Navigation.PushAsync(new AddProjectTaskPage(addTaskViewModel));
}
public AddProjectTaskPage(AddProjectTaskViewModel viewModel)
{
InitializeComponent();
BindingContext = this.viewModel = viewModel;
}