C# XML Save & Load

gistfile1.cs

private void load()
{
    XmlDocument doc = new XmlDocument();
    doc.Load(rootPath  + "\\config.xml");
    XmlElement root = doc.DocumentElement;
    name = root.GetAttribute("name");

    XmlNodeList objs = root.SelectNodes("/ThemeConfig/Objects/Image");
    foreach (XmlElement elem in objs)
    {
        //Console.WriteLine(elem.GetAttribute("name"));
        ImageObj imgObj = new ImageObj(elem.GetAttribute("name"), elem.GetAttribute("img_name"), elem.GetAttribute("depth_name"));
        imgObjs.Add(imgObj.name, imgObj);
    }
}

private void create()
{
    XmlDocument doc = new XmlDocument();
    XmlElement themeConfig = doc.CreateElement("ThemeConfig");
    themeConfig.SetAttribute("name", name);
    XmlElement Objects = doc.CreateElement("Objects");
    XmlElement Background = doc.CreateElement("Background"); ;
    Background.SetAttribute("name", "Background");
    Background.SetAttribute("img_name", "");

    Objects.AppendChild(Background);
    themeConfig.AppendChild(Objects);
    doc.AppendChild(themeConfig);
    doc.Save(rootPath + "\\config.xml");
}

public void save()
{
    XmlDocument doc = new XmlDocument();
    XmlElement themeConfig = doc.CreateElement("ThemeConfig");
    themeConfig.SetAttribute("name", name);
    
    XmlElement Objects = doc.CreateElement("Objects");
    foreach (ImageObj imgObj in imgObjs.Values)
    {
        XmlElement Image = doc.CreateElement("Image");
        Image.SetAttribute("name", imgObj.name);
        Image.SetAttribute("img_name", imgObj.img_name);
        Image.SetAttribute("depth_name", imgObj.depth_name);
        Objects.AppendChild(Image);
    }
    themeConfig.AppendChild(Objects);
    
    doc.AppendChild(themeConfig);

    doc.Save(rootPath + "\\config.xml");
}

<ThemeConfig name="小美人魚">
  <Objects>
    <Image name="miney" img_name="miney.png" depth_name="VerRec6.png" />
    <Image name="micky" img_name="micky.png" depth_name="VerRec5.png" />
    <Image name="(Background)" img_name="IMG_1744.jpg" depth_name="" />
    <Image name="lksdjfks" img_name="bus.png" depth_name="d_HorRec1.png" />
  </Objects>
</ThemeConfig>