public static async Task Set(Uri uri, WallpaperDisplayStyle wallpaperDisplayStyle)
{
using var client = new HttpClient();
var imageStream = await client.GetByteArrayAsync(uri);
var imagePath = Path.GetTempFileName();
await File.WriteAllBytesAsync(imagePath, imageStream);
var key = Registry.CurrentUser.OpenSubKey(@"Control Panel\Desktop", true);
if (key == null)
{
throw new InvalidOperationException("The registry key 'Control Panel\\Desktop' could not be found");
}
if (wallpaperDisplayStyle == WallpaperDisplayStyle.Fill)
{
key.SetValue(@"WallpaperStyle", 10.ToString());
key.SetValue(@"TileWallpaper", 0.ToString());
}
if (wallpaperDisplayStyle == WallpaperDisplayStyle.Fit)
{
key.SetValue(@"WallpaperStyle", 6.ToString());
key.SetValue(@"TileWallpaper", 0.ToString());
}
if (wallpaperDisplayStyle == WallpaperDisplayStyle.Span) // Windows 8 or newer only!
{
key.SetValue(@"WallpaperStyle", 22.ToString());
key.SetValue(@"TileWallpaper", 0.ToString());
}
if (wallpaperDisplayStyle == WallpaperDisplayStyle.Stretch)
{
key.SetValue(@"WallpaperStyle", 2.ToString());
key.SetValue(@"TileWallpaper", 0.ToString());
}
if (wallpaperDisplayStyle == WallpaperDisplayStyle.Tile)
{
key.SetValue(@"WallpaperStyle", 0.ToString());
key.SetValue(@"TileWallpaper", 1.ToString());
}
if (wallpaperDisplayStyle == WallpaperDisplayStyle.Center)
{
key.SetValue(@"WallpaperStyle", 0.ToString());
key.SetValue(@"TileWallpaper", 0.ToString());
}
SystemParametersInfo(SPI_SETDESKWALLPAPER,
0,
imagePath,
SPIF_UPDATEINIFILE | SPIF_SENDWININICHANGE);
}
public static void Set(Uri uri, WallpaperDisplayStyle wallpaperDisplayStyle)
{
try
{
var s = new WebClient().OpenRead(uri.ToString());
var img = Image.FromStream(s);
var tempPath = Path.Combine(Path.GetTempPath(), "wallpaper.bmp");
img.Save(tempPath, ImageFormat.Bmp);
var key = Registry.CurrentUser.OpenSubKey(@"Control Panel\Desktop", true);
if (wallpaperDisplayStyle == WallpaperDisplayStyle.Fill)
{
key.SetValue(@"WallpaperStyle", 10.ToString());
key.SetValue(@"TileWallpaper", 0.ToString());
}
if (wallpaperDisplayStyle == WallpaperDisplayStyle.Fit)
{
key.SetValue(@"WallpaperStyle", 6.ToString());
key.SetValue(@"TileWallpaper", 0.ToString());
}
if (wallpaperDisplayStyle == WallpaperDisplayStyle.Span) // Windows 8 or newer only!
{
key.SetValue(@"WallpaperStyle", 22.ToString());
key.SetValue(@"TileWallpaper", 0.ToString());
}
if (wallpaperDisplayStyle == WallpaperDisplayStyle.Stretch)
{
key.SetValue(@"WallpaperStyle", 2.ToString());
key.SetValue(@"TileWallpaper", 0.ToString());
}
if (wallpaperDisplayStyle == WallpaperDisplayStyle.Tile)
{
key.SetValue(@"WallpaperStyle", 0.ToString());
key.SetValue(@"TileWallpaper", 1.ToString());
}
if (wallpaperDisplayStyle == WallpaperDisplayStyle.Center)
{
key.SetValue(@"WallpaperStyle", 0.ToString());
key.SetValue(@"TileWallpaper", 0.ToString());
}
SystemParametersInfo(SPI_SETDESKWALLPAPER,
0,
tempPath,
SPIF_UPDATEINIFILE | SPIF_SENDWININICHANGE);
}
catch
{
//Supress
}
}
