C＃在Closing问题中将数据保存到磁盘 [英] C# saving data to disk within Closing problem

问题描述

您好，我的WPF应用程序中存在以下问题：



我想将应用程序数据保存到磁盘。我想在主窗口Closing事件中这样做。



代码：

Hello, I have following problem in my WPF app:

I want to save application data to disk. I am trying to do this in main window Closing event.

Code:

XmlDocument Doc = new XmlDocument();
XmlElement root = Doc.CreateElement("fileset");

foreach(FileModel file in set)
{
    XmlElement fileElem = Doc.CreateElement("file");
    root.AppendChild(fileElem);

    fileElem.SetAttribute("path", file.Path);
}

System.IO.File.Create(path);

using (System.IO.StreamWriter file = new System.IO.StreamWriter(path, true))
{
    System.IO.StringWriter sw = new System.IO.StringWriter();
    XmlTextWriter tx = new XmlTextWriter(sw);
    Doc.WriteTo(tx);

    file.Write(tx.ToString());
}

// Doc.Save(path);

问题导致新的System.IO.StreamWriter（path，true） （ Doc.Save（路径）），永远不会返回。主窗口变黑，我必须使用taskmanager杀死app。 System.IO.File.Create（path）; 工作正常。



有什么想法吗？

Problem is causing new System.IO.StreamWriter(path, true) (Doc.Save(path) as well), which never returns. Main window gets black and I have to kill app using taskmanager. System.IO.File.Create(path); works fine.

Any ideas?

推荐答案

丢掉行 System.IO.File.Create（path）; - 它没用了。

Throw away the line System.IO.File.Create(path); - it's useless.

XmlWriterSettings xmlSettings = new XmlWriterSettings();
xmlSettings.Encoding = System.Text.Encoding.UTF8;
xmlSettings.Indent = true;
xmlSettings.NewLineHandling = NewLineHandling.None;
xmlSettings.NewLineOnAttributes = false;
XmlWriter writer = XmlWriter.Create(path, xmlSettings);
writer.WriteStartDocument(true);
Doc.WriteTo(writer);
writer.WriteEndDocument();
writer.Close();

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