c# - localSettings.Containers [容器名称]-给定的 key 不存在

Question

我正在遍历代码以查找localsettings。当容器为空时，它给出错误消息“字典中不存在给定键”。如何检查容器为空，以免崩溃代码？

if ((Windows.Storage.ApplicationDataContainer)localSettings.Containers[containername] != null)

这给出了相同的错误

var container = localSettings.Containers[containername];

Answer 1

Windows.Storage.ApplicationDataContainer settings = Windows.Storage.ApplicationData.Current.LocalSettings;

        //This checks if the given container name exists or not
        if(settings.Containers.ContainsKey("containerName"))
        { 
            if(settings.Containers["ContainerName"].Values.ContainsKey("your data key"))
            {
                //Do something
            }
        }

希望能帮助到你