【Xamarin】Prism.Forms入門　ViewModelLocator

CustomizeResolver.cs

protected override void ConfigureViewModelLocator()
{
    base.ConfigureViewModelLocator();   // <- 必須！DIされなくなります。
    ViewModelLocationProvider.SetDefaultViewTypeToViewModelTypeResolver(
        viewType =>
        {
            var viewName = viewType.FullName;
            viewName = viewName.Replace(".Views.", ".ViewModels.");
            string viewModelName;
            if (viewName.EndsWith("Page"))
            {
                viewModelName = $"{viewName.Substring(0, viewName.LastIndexOf("Page", StringComparison.Ordinal))}ViewModel";
            }
            else
            {
                var suffix = viewName.EndsWith("View") ? "Model" : "ViewModel";
                viewModelName = $"{viewName}{suffix}";
            }
            var viewAssemblyName = viewType.GetTypeInfo().Assembly.FullName;
            return Type.GetType(string.Format(CultureInfo.InvariantCulture, "{0}, {1}", viewModelName, viewAssemblyName));
        });
}