public ClientContext(string appId)
{
this.AppID = appId;
this._custom = new Dictionary<string, string>();
if (string.IsNullOrEmpty(_clientID))
{
_clientID = _appSetting.GetValue(APP_CLIENT_ID_KEY, ApplicationSettingsMode.Local);
if (string.IsNullOrEmpty(_clientID))
{
_clientID = Guid.NewGuid().ToString();
_appSetting.SetValue(APP_CLIENT_ID_KEY, _clientID, ApplicationSettingsMode.Local);
}
}
}