c# - 使用 FileStream 创建文件会返回 InvalidOperationException

Question

它在 第 12 行 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);
        }
    }

如果需要，异常消息中有更多详细信息:

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

谢谢!

Answer 1

考虑这样的事情？ :

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);
        }
    });
}