Question

我使用以下代码将许多类序列化为XML文件

static void GetFromDBToXml()
    {
        var thejob = Xmltodb.Singleton.DBManager.GetSingleObject<job>("jobid", JobData.Job.Jobid);
        var theparts = Xmltodb.Singleton.DBManager.GetListOfObjects<parts>("jobid", JobData.Job.Jobid);
        var thesurv = Xmltodb.Singleton.DBManager.GetListOfObjects<jobsurvey>("jobid", JobData.Job.Jobid);

        try
        {
            using (var fs = new FileStream(Path.Combine(Xmltodb.Singleton.ContentDirectory, "temp.xml"), FileMode.OpenOrCreate))
            {
                var xmlSerializer = new XmlSerializer(typeof(job));
                xmlSerializer.Serialize(fs, thejob);
                xmlSerializer = new XmlSerializer(typeof(parts));
                foreach (var p in theparts)
                    xmlSerializer.Serialize(fs, p);
                xmlSerializer = new XmlSerializer(typeof(jobsurvey));
                foreach (var s in thesurv)
                    xmlSerializer.Serialize(fs, s);
            }
        }
        catch (InvalidOperationException ex)
        {
            Console.WriteLine("Can't write the xml file : {0}--{1}", ex.Message, ex.StackTrace);
        }
    }

代码直接从SQLite中提取并写入XML文件。

虽然这有效，但在每个类的结尾和下一个的开始时，我每次都会添加XML标头。换句话说

</jobsurvey>
<?xml version="1.0" encoding="utf-8">
<parts xmlns:xsi="http://www.w3.org ...

有没有办法阻止序列化程序为每个被序列化的类生成<?xml和xmlns:部分而不必创建文件，然后重新分析以删除我不需要的这些位？

Answer 1

你可以尝试这样的事情。这里重要的是XMLWriterSettings和XmlSerializerNamespaces。

XmlWriterSettings settings = new XmlWriterSettings();
settings.OmitXmlDeclaration = true;

MemoryStream ms = new MemoryStream();
XmlWriter writer = XmlWriter.Create(ms, settings);

XmlSerializerNamespaces names = new XmlSerializerNamespaces();
names.Add("", "");

XmlSerializer cs = new XmlSerializer(typeof(Cat));

cs.Serialize(writer, new Cat { Lives = 9 }, names);

ms.Flush();
ms.Seek(0, SeekOrigin.Begin);
StreamReader sr = new StreamReader(ms);
var xml = sr.ReadToEnd();

是否可以更改XML序列化程序以不输出XML版本？

1 个答案: