How To Convert System.Drawing.Bitmap to Microsoft.UI.Xaml.Media.Imaging.BitmapImage

// get bitmapimage
var bitmapImage = await ConvertBitmapToBitmapImage(app.AppIcon);


// determine bitmapimage not null
if (bitmapImage != null) {
    // set app icon
    appItem.AppIcon = bitmapImage;
}

Add the Function 'ConvertBitmapToBitmapImage':

// convert bitmap to bitmapimage
public static async TaskBitmapImage> ConvertBitmapToBitmapImage(System.Drawing.Bitmap bitmap) {
    // determine bitmap not null
    if (bitmap == null)
        // return null
        return null;

    // create new bitmapimage
    Microsoft.UI.Xaml.Media.Imaging.BitmapImage bitmapImage = new();

    // create imagestream
    var imageStream = new MemoryStream();

    // using imagestream
    using (imageStream) {
        // save bitmap as jpeg
        bitmap.Save(imageStream, ImageFormat.Jpeg);
        imageStream.Position = 0;

        // convert stream to bytes array
        byte[] imageBytes = imageStream.ToArray();
                
        // get bitmapimage from bytes
        bitmapImage = await GetBitmapImageFromBitmapBytes(imageBytes);
    }

    // return bitmapimage
    return bitmapImage;
}

Add the Function 'GetBitmapImageFromBitmapBytes':

// get bitmapimage from bitmap bytes
public static async TaskBitmapImage> GetBitmapImageFromBitmapBytes(byte[] data) {
    // create new bitmapimage
    Microsoft.UI.Xaml.Media.Imaging.BitmapImage bitmapImage = new();

    // using memorystream
    using (var stream = new InMemoryRandomAccessStream()) {
        // using datawriter
        using (var writer = new DataWriter(stream)) {
            // write bytes
            writer.WriteBytes(data);
                    
            // store
            await writer.StoreAsync();

            // flush
            await writer.FlushAsync();

            // detach
            writer.DetachStream();
        }

        // set stream to 0
        stream.Seek(0);

        // set bitmapimage source from stream
        await bitmapImage.SetSourceAsync(stream);
    }

    // return bitmapimage
    return bitmapImage;
}

Tags: WinUI, C#, XAML, Visual Studio, Microsoft, Windows

How To Get Microsoft Windows App Store app's icon image from .exe:

Create a public variable:

List<AppStoreItem> AppFoldersList { get; set; } = new();

Create a custom class

// appstoreitem class
public class AppStoreItem {
    public string AppName { get; set; }
    public Bitmap AppIcon { get; set; }
}

Setup code to get the apps folder via the apps folder ID.
Enumerate through the apps folder and create vars using the above created 'AppStoreItem' class.
Add each AppStoreItem var to the above created public var 'AppFolderList'.

// GUID taken from https://learn.microsoft.com/en-us/windows/win32/shell/knownfolderid
var appsFolderID = new Guid("{1e87508d-89c2-42f0-8a7e-645a0f50ca58}");

// get appsfolder
ShellObject appsFolder = (ShellObject)KnownFolderHelper.FromKnownFolderId(appsFolderID);

// enumerate appsfolder
foreach (var iknownFolder in (IKnownFolder)appsFolder) {
    // create new appstoreitem
    AppStoreItem appStoreItem = new();
    appStoreItem.AppName = iknownFolder.ToString();
    appStoreItem.AppIcon = iknownFolder.Thumbnail.Bitmap;

    // add appstoreitem to appfolderslist
    AppFoldersList.Add(appStoreItem);
}

Tags: WinUI, C#, XAML, Visual Studio, Microsoft, Windows