使用C#读取网站相对路径文件夹下所有图片

public JsonResult GetCourseInitCover()
{
//设置相对路径
string imgurl = Server.MapPath("~/Content/images"); //根据相对路径，读取所有文件，并且不查找子文件夹。之后筛选格式是图片的文件
var strs = System.IO.Directory.GetFiles(imgurl, "*.*", System.IO.SearchOption.TopDirectoryOnly).Where(s => s.EndsWith(".jpg") || s.EndsWith(".gif") || s.EndsWith(".bmp") || s.EndsWith(".png")); List<KeyName> filelist = new List<KeyName>();
foreach (string file in strs)
{
KeyName item = new KeyName();
//读取文件信息
System.IO.FileInfo fi = new System.IO.FileInfo(file);
if (fi.Extension == ".jpg" || fi.Extension == ".gif" || fi.Extension == ".bmp" || fi.Extension == ".png")
{
item.Name = fi.Name;
filelist.Add(item);
}
} //拼装返回参数
var result = from dir in filelist
select new
{
key = "/Content/images/" + dir.Name,
value = dir.Name.Split('.')[]
};
return Json(result, JsonRequestBehavior.AllowGet);
}