如何將XML轉換爲字符串包括報關

Question

我有一個XML轉換爲字符串

的XML創建爲：

System.Xml.Linq.XDocument doc = new System.Xml.Linq.XDocument(new System.Xml.Linq.XDeclaration("1.0", "ISO-8859-1","")); 
System.Xml.Linq.XElement root = new System.Xml.Linq.XElement("qcs"); 
System.Xml.Linq.XElement goal_Name = new System.Xml.Linq.XElement("goal", new System.Xml.Linq.XAttribute("name","abc")); 
root.Add(goal_Name); 
doc.Add(root); 
Console.WriteLine(doc.ToString()); 

我得到的字符串爲：

<qcs> 
    <goal name="Goal15"> 
    </goal> 
</qcs> 

但跳過聲明部分即：

<?xml version="1.0" encoding="ISO-8859-1"?> 

我需要字符串作爲

<?xml version="1.0" encoding="ISO-8859-1"?> 
<qcs> 
    <goal name="Goal15"> 
    <value action="A">0.85</value> 
    <value action="B">0.87</value> 
    </goal> 

我需要在字符串中也有這個。 如何做到這一點？

Answer 1

約

XElement root = new XElement("qcs"); 
XElement goal_Name = new XElement("goal", new System.Xml.Linq.XAttribute("name", "abc")); 
root.Add(goal_Name); 

XDocument doc = new XDocument(new XDeclaration("1.0", "ISO-8859-1", string.Empty), root); 

var wr = new StringWriter(); 
doc.Save(wr); 
Console.Write(wr.GetStringBuilder().ToString()); 
Console.ReadLine();