private async Task CreateMenuAsync(string menuName, System.Drawing.Image image, params ActionArea[] areas)
{
var menu = new RichMenu()
{
Name = menuName,
ChatBarText = CHAT_BAR_TEXT,
Selected = true,
Size = ImagemapSize.RichMenuShort,
Areas = areas
};
var menuId = await _client.CreateRichMenuAsync(menu);
using (var stream = new System.IO.MemoryStream())
{
image.Save(stream, System.Drawing.Imaging.ImageFormat.Png);
stream.Position = 0;
await _client.UploadRichMenuPngImageAsync(stream, menuId);
}
}