從Web api反序列化XML數組

Question

首先，我遵循給定的答案here，但我仍然無法獲得以下工作。

我從一個Web API檢索XML，並返回的結果是這樣：

<ArrayOf__ptd_student_charges 
    xmlns="http://schemas.datacontract.org/2004/07/something.something" 
    xmlns:i="http://www.w3.org/2001/XMLSchema-instance"> 
    <__ptd_student_charges> 
     <accumulated_tuition>000.000</accumulated_tuition> 
     <course_id>AAA-000/L</course_id> 
     <invoice_date>01/01/2015</invoice_date> 
     <lecturer_name>John Doe</lecturer_name> 
     <net_tuition>000.000</net_tuition> 
     <section_no>1</section_no> 
     <semester>Summer</semester> 
     <student_id>123456</student_id> 
     <student_name>John Doe</student_name> 
     <year>2015</year> 
    </__ptd_student_charges> 
    <__ptd_student_charges> 
     <accumulated_tuition>000.000</accumulated_tuition> 
     <course_id>AAA-000/L</course_id> 
     <invoice_date>01/01/2015</invoice_date> 
     <lecturer_name>John Doe</lecturer_name> 
     <net_tuition>000.000</net_tuition> 
     <section_no>1</section_no> 
     <semester>Summer</semester> 
     <student_id>123456</student_id> 
     <student_name>John Doe</student_name> 
     <year>2015</year> 
    </__ptd_student_charges> 
</ArrayOf__ptd_student_charges> 

我試圖反序列化到學生的數組這一點。 我的學生類的定義是這樣的：

public class Student 
{ 
    [System.Xml.Serialization.XmlElement("accumulated_tuiton")] 
    public double AccumulatedTution { get; set; } 

    [System.Xml.Serialization.XmlElement("net_tuiton")] 
    public double NetTuiton { get; set; } 

    [System.Xml.Serialization.XmlElement("course_id")] 
    public string CourseID { get; set; } 

    [System.Xml.Serialization.XmlElement("invoice_date")] 
    public DateTime InvoiceDate { get; set; } 

    [System.Xml.Serialization.XmlElement("lecturer_name")] 
    public string LecturerName { get; set; } 

    [System.Xml.Serialization.XmlElement("semester")] 
    public string Semester { get; set; } 

    [System.Xml.Serialization.XmlElement("student_id")] 
    public string StudentId { get; set; } 

    [System.Xml.Serialization.XmlElement("student_name")] 
    public string StudentName { get; set; } 

    [System.Xml.Serialization.XmlElement("year")] 
    public string Year { get; set; } 

    [System.Xml.Serialization.XmlElement("section_no")] 
    public int Section { get; set; } 
} 

而我的學生收取的定義是這樣的：

[System.Xml.Serialization.XmlRoot("ArrayOf__ptd_student_charges xmlns=\"http://schemas.datacontract.org/2004/07/something.something\" xmlns:i=\"http://www.w3.org/2001/XMLSchema-instance")] 
public class StudentCollection 
{ 
    [XmlArray("ArrayOf__ptd_student_charges")] 
    [XmlArrayItem("__ptd_student_charges", typeof(Student))] 
    public Student[] StudentArray { get; set; } 
} 

我使用這個代碼反序列化的結果：

private void MainWindow_Loaded(object sender, RoutedEventArgs e) 
{ 
    StudentCollection collection; 

    HttpWebRequest request = WebRequest.Create(stringUrl) as HttpWebRequest; 
    HttpWebResponse response = request.GetResponse() as HttpWebResponse; 

    XmlTextReader reader = new XmlTextReader(response.GetResponseStream()); 

    XmlSerializer serializer = new XmlSerializer(typeof(StudentCollection)); 
    collection = (StudentCollection)serializer.Deserialize(reader); 

    reader.Close(); 
} 

一旦我運行這個，我得到一個消息InvalidOperationException

ArrayOf__ptd_student_charges xmlns ='http://schemas.datacontract.org/2004/07/something.something'> 不是預期的。

我知道xmlns：...不應該在第一個標籤中，但不幸的是，我不確定如何繼續。

Answer 1

基本上，你需要支持默認XML命名空間在XML文件 - 你可以要麼通過指定它的StudentCollection做到這一點：

[System.Xml.Serialization.XmlRoot("ArrayOf__ptd_student_charges")] 
[System.Xml.Serialization.XmlRootAttribute(Namespace = "http://schemas.datacontract.org/2004/07/something.something", IsNullable = false)] 
public class StudentCollection 
{ 
    [XmlArray("ArrayOf__ptd_student_charges")] 
    [XmlArrayItem("__ptd_student_charges", typeof(Student))] 
    public Student[] StudentArray { get; set; } 
} 

和實際Student類：

[System.Xml.Serialization.XmlRootAttribute(Namespace = "http://schemas.datacontract.org/2004/07/something.something", IsNullable = false)] 
public class Student 
{ 
    .......... 
} 

或您可以在反序列化時以編程方式指定它：

XmlSerializer serializer = new XmlSerializer(typeof(StudentCollection), 
              "http://schemas.datacontract.org/2004/07/something.something"); 

XmlSerializer的第二個參數是默認反序列化XML內容時要使用的XML名稱空間。

額外TIPP：，如果你有一個XML文件再次，你需要獲得C＃代碼的類，它表示XML - 如果你的Visual Studio 2012或更高版本，只需要創建一個新的代碼類，複製您的將XML文件導入到剪貼板中，然後使用Edit > Paste Special > Paste XML as classes，然後獲取所有C＃，包括所有XML屬性和XML命名空間以及粘貼到您的Visual Studio中的所有內容。