在 xaml 中使用具有什么类型属性的 Image 标记

Question

I want to use an image in xaml with a <Image></Image> tag (Inside of a ListBox).

<Image  Source="{Binding ClassImage}"
        Width="64" Height="64"
        HorizontalAlignment="Left" VerticalAlignment="Top"
        Stretch="Fill"
        Margin="0,0,0,10"
        RenderOptions.BitmapScalingMode="Fant"/>

And using this constructor in the ViewModel.

public ChooseNewClassViewModel()
{
   ListOfModels = new ObservableCollection<Model>();
   foreach (var model in ListOfModels)
   {
       Model.ClassImage = AppDomain.CurrentDomain.BaseDirectory +     @"Common\Assets\Images\Image\" + PlayerClass.Name + ".png";
   }
}

And here is the Model property

public string ClassImage
{
     get { return _classImage; }
     set
     {
         _classImage = value;
         OnPropertyChanged(nameof(ClassImage));
     }
}

Now, The ClassImage property is only a string property ( I read somewhere that it should work) but the images are not showing, but the rest of data I use in the view from ListOfModels works fine, and i can see three objects (empty) in the view from the list. The images in my Image folder are of type Resource and on copy if newer.

My question is I guess, whats the best way of binding the Image.Source property to what type of "property", is it the best way really to use a string? Whats the best way of using images you store in your project?

Answer 1

Your ChooseNewClassViewModel method (constructor?) doesn't do anything, because it first creates a list of models, then immediately iterates over the collection, but the collection is empty, because it hasn't been populated.

Perhaps you want your ClassImage property to look like this:

public string ClassImage
{
    get { return AppDomain.CurrentDomain.BaseDirectory...; }
}

Answer 2

The Problem was that my xaml could not find the binding to my Model. The quick way i fixed it is just i created a new string prop in my viewmodel, bound the xaml to that one instead and used it to show the images.

 public string ClassImage
        {
            get { return _classImage; }
            set
            {
                _classImage = value;
                OnPropertyChanged(nameof(ClassImage));

            }
        }

 foreach (var PlayerClass in ListOfPlayerClasses)
            {

                ClassImage = @"/path/folders/" + PlayerClass.Name + ".png";
                PlayerClass.ClassImage = ClassImage;
            }