C# - get image by id in Umbraco

I use this method to get information in the media library.

Media picMedia = new Media(imageId);

Image.ImageUrl = picMedia.getProperty("umbracoFile").Value.ToString();

Or you can do this easily with :

public static string GetImageByID(int imageId)

{

    string returnImage = "";

    if (imageId != null)

 returnImage = (new umbraco.cms.businesslogic.media.Media(imageId).getProperty("umbracoFile").Value).ToString();



    return returnImage;

}