读取：
var imgSizeStr = ConfigurationManager.AppSettings["UploadImgSize"];
写入：
Configuration config = WebConfigurationManager.OpenWebConfiguration("/");AppSettingsSection app = config.AppSettings;app.Settings["UploadImgSize"].Value = value.ToString();config.Save(ConfigurationSaveMode.Modified);
net WebConfig读写
原文地址：https://www.cnblogs.com/come-on-come-on/p/10216139.html