使用FileStream创建文件将返回InvalidOperationException [英] Creating a file with FileStream returns an InvalidOperationException

问题描述

它专门在line 12处返回exception.

    public void saveToXML()
    {
        URL newURL = new URL();
        newURL.type = type;
        newURL.name = name;
        newURL.info = info;
        newURL.url = url;
        newURL.isProtected = isProtected;
        newURL.amountOfClicks = amountOfClicks;
        XmlSerializer xml = new XmlSerializer(typeof(URL));
        string directory = @"C:\Users\PC-User\Documents\Link" + newURL.name + ".xml";
        using (var file = File.Create(directory))
        {
            xml.Serialize(file, url);
        }
    }

如有必要，请在异常消息中提供更多详细信息:

More details in exception message if needed:

不应在UI线程上执行同步操作.考虑将此方法包装在Task.Run中.

Synchronous operations should not be performed on the UI thread. Consider wrapping this method in Task.Run.

谢谢！

推荐答案

考虑这样的事情吗? :

Consider something like this? :

public async Task saveToXml(){
    string directory = @"C:\Users\PC-User\Documents\Link" + newURL.name + ".xml";
    await Task.Run(()=>
    {
        Task.Yield();
        using (var file = File.Create(directory))
        {
            xml.Serialize(file, url);
        }
    });
}

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