通过C＃更改XAML中的图像源

Question

So I have a Grid name Game (the main game board) what I wanna do is load every image from inside the grid when the program loads

foreach(Image myImage in Game.Children)
            {
                BitmapImage bi3 = new BitmapImage();
                bi3.UriSource = new Uri("ms-appx:///Assets/SmallLogo.png");
                myImage.Stretch = Stretch.Fill;
                myImage.Source = bi3;
            }

I am using this foreach but I always get error messages. I tried a lot of different methods but none worked so far. I am trying to make a matching memory game. Thanks in advance

Answer 1

The child of your Grid is a StackPanel, not the Image itself. You'll probably need to dig in deeper to the StackPanel. If you share your XAML too it'll be easier to tell, but I'm guessing the Images are something like the datacontext of the one of the contents in your StackPanel.

Share the XAML if you're still running into issues

Answer 2

After checking XAML you provided on jack's answer the problem is pretty obvious. You are iterating over all of the children of the Grid and implicitly casting them to Image but one of the child is a StackPanel and that is where your exception occurs. You should first check if that children is the Image:

foreach (var child in Game.Children)
{
    var myImage = child as Image;
    if (myImage == null)
    {
        continue;
    }
    BitmapImage bi3 = new BitmapImage();
    bi3.UriSource = new Uri("ms-appx:///Assets/SmallLogo.png");
    myImage.Stretch = Stretch.Fill;
    myImage.Source = bi3;
}