“Cannot convert string to ImageSource.” How can I do this?

Question

private void HeroMouseEnter(object sender, MouseEventArgs e)
    {
        ((Image)sender).Source = GetGlowingImage(((Image)sender).Name);            
    }

    pub         


        

Answer 1

for more if you intent to change the background of a Grid or other Panel that support System.Windows.Media.Brush with a click of a button

private void btnBackgroundImage_Click(object sender, RoutedEventArgs e)
{
    OpenFileDialog dlg = new OpenFileDialog();
    dlg.Filter = "Image Files (*.bmp;*.png;*.jpg;)|*.bmp;*.png;*.jpg";
    dlg.Multiselect = false;
    dlg.RestoreDirectory = true;

    if (dlg.ShowDialog() == true)
    {
        txtBackImageName.Text = dlg.FileName;
        _layoutRoot.Background = new System.Windows.Media.ImageBrush(GetImageSource(dlg.FileName));
    }
}


public ImageSource GetImageSource(string filename)
{
    string _fileName = filename;

    BitmapImage glowIcon = new BitmapImage();

    glowIcon.BeginInit();
    glowIcon.UriSource = new Uri(_fileName);
    glowIcon.EndInit();

    return glowIcon;
}

Answer 2

Consider using an EventTrigger to do this completely in XAML instead of messing with magic strings in the code behind.

This link would help

Answer 3

Something like:

BitmapImage myBitmapImage = new BitmapImage(new Uri("../../../../Images/folder.png", UriKind.Relative));
myBitmapImage.CacheOption = BitmapCacheOption.OnLoad;
Image.Source = myBitmapImage;

Answer 4

var converter = new Xamarin.Forms.ImageSourceConverter();
var imgSource = (Xamarin.Forms.ImageSource) converter.ConvertFromInvariantString(item.Poster);

Answer 5

You probably want to return a BitmapSource. This MSDN article has an example of how to create a BitmapSource from an image file.

Answer 6

Going by your edit, you are happy to have a static set of images in resources. If that's correct, you can do this:

<Application.Resources>
  <BitmapImage x:Key="andromeda64" UriSource="andromeda_64px.jpg" />
</Application.Resources>

then load it as:

public ImageSource GetGlowingImage(string name)
{
  switch (name)
  {
    case "Andromeda":
      return (ImageSource)FindResource("andromeda64");
    default:
      return null;
  }
}

FindResource requires you to be in code-behind for something in the visual tree (e.g. an event handler). If this isn't the case, or if you want to be able to load things that aren't in a resource dictionary, see Cory's answer. The advantage of using and reusing resources is that you don't need to create a BitmapImage each time you use it (though in this case the overhead cost of doing so will be insignificant).