WPF怎么设置Image.Source为资源图片

WPF如何设置Image.Source为资源图片
XAML里是Source="/GalaxyErp.Main;component/Images/btnMinimize.png"

现在应该要做最大化和还原按钮，请问如何用代码设置Image.Source=?

[解决办法]

C# code

string realPath = string.Format(”/GalaxyErp.Main;component/Images/btnMinimize.png”);                Uri pathUri = new Uri(realPath);                System.Windows.Media.Imaging.BitmapImage bi = new System.Windows.Media.Imaging.BitmapImage();                bi.BeginInit();                bi.UriSource = pathUri;                bi.EndInit();                return bi;