csharp-xml

<xml>
    <return_code>OK</return_code>
    <return_time>2021-04-08 01:18:01</return_time>
    <return_msg>成功！</return_msg>
</xml>

XmlDocument doc = new XmlDocument();
try
{
    //xml文件路径
    doc.LoadXml(str);
    //得到根节点Project
    var root = doc.DocumentElement;
    foreach (XmlNode node in root.ChildNodes)//4.遍历根节点（根节点包含所有节点）
    {
        if (node.Name == "return_code")
        {
            if (node.InnerText != "OK")
            {
                Log.Error($"upload failed. ret={str}");
                iRet = -1;
                break;
            }
            else
            {
                Log.Information($"upload success, ret={str}");
                iRet = 0;
                break;
            }
        }
    }
}
catch (System.Exception e1)
{
    Log.Error($"load xml response failed. msg={str},ex={e1.Message}");
    tb_status.Text = $"状态：解析后台返回信息发生异常,{e1.Message}";
    App.db.m_log_info.Add(new ModelLog { Msg = $"解析后台返回信息发生异常,异常信息={e1.Message}", Time = DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss") });

}