Metro应用中如何添加XmlDeclaration

Question

Metro应用中想保存文件为xml格式的，如何添加XmlDeclaration ？在Metro中提示找不到XmlDeclaration 这个类

Answer 1

你是如何操作保存的，System.Xml.Linq Namespace for Metro中提供了 XDeclaration 类型：http://msdn.microsoft.com/en-us/library/windows/apps/system.xml.linq.xdeclaration(v=vs.110).aspx

或者你用 XmlWriter.WriteStartDocument Method 它包含了 XML declaration with the version "1.0"，

或者你可以通过XmlWriter  的  XmlWriterSettings.OmitXmlDeclaration

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Bob Bao [MSFT]
MSDN Community Support | Feedback to us

Answer 2

你好，我是用：

xmlDoc = new XmlDocument();
......
xmlDoc.AppendChild(newRoot);
......
await xmlDoc.SaveToFileAsync(configFile);

方式来操作保存的，请问用应该怎么添加Declaration呢？谢谢！

Answer 3

用 XmlProcessingInstruction 替代即可：

        private async void Button_Click_1(object sender, RoutedEventArgs e)
        {
            XmlDocument xmlDoc = new XmlDocument();
            XmlProcessingInstruction pi = xmlDoc.CreateProcessingInstruction("xml", @"version=""1.0"" encoding=""ISO-8859-1""");
            xmlDoc.AppendChild(pi);
            XmlElement xmlRoot = xmlDoc.CreateElement("Root");
            xmlDoc.AppendChild(xmlRoot);
            StorageFile file = await KnownFolders.DocumentsLibrary.CreateFileAsync("test.xml");
            await xmlDoc.SaveToFileAsync(file);
        }

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Bob Bao [MSFT]
MSDN Community Support | Feedback to us