[英]how to read XML file with C#
我想用 C#(統一項目)讀取 XML 文件以顯示一些內容。 XML 文件由 Talend Studio 中的 TALEND 作業提供。
我已將 XML 文件轉換為 C# 類,現在我正在嘗試讀取此 XML(存儲在文件中)來管理內容。
目前,我能夠讀取一些屬性,但最有趣的標記是 nul。 反序列化過程中沒有錯誤。
private const string filename = "/Applications/TalendStudio-7.1.1/studio/workspace/LOCAL_PROJECT/process/job1_0.1.item";
void Start()
{
// Create an instance of the XmlSerializer.
XmlSerializer serializer = new XmlSerializer(typeof(Xml2CSharp.ProcessType));
// Declare an object variable of the type to be deserialized.
Xml2CSharp.ProcessType i;
using (Stream reader = new FileStream(filename, FileMode.Open))
{
// Call the Deserialize method to restore the object's state.
i = (Xml2CSharp.ProcessType)serializer.Deserialize(reader);
Debug.Log(i);
}
}
XML 文件以:
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<talendfile:ProcessType
xmlns:talendfile="TalendFile.xsd" xmlns:TalendMapper="http://www.talend.org/mapper" xmlns:xmi="http://www.omg.org/XMI" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
defaultContext="Default" jobType="Standard" xmi:version="2.0">
<context confirmationNeeded="false" name="Default">
<contextParameter comment="" name="max_rows" prompt="max_rows?" promptNeeded="false" type="id_Integer" value="10"/>
</context>
<context confirmationNeeded="false" name="prod">
<contextParameter comment="" name="max_rows" prompt="max_rows?" promptNeeded="false" type="id_Integer" value="30"/>
</context>
<context confirmationNeeded="false" name="qa">
<contextParameter comment="" name="max_rows" prompt="max_rows?" promptNeeded="false" type="id_Integer" value="20"/>
</context>
<parameters>
<elementParameter field="TEXT" name="SCREEN_OFFSET_X" show="false" value="0"/>
<elementParameter field="TEXT" name="SCREEN_OFFSET_Y" show="false" value="0"/>
<elementParameter field="TEXT" name="REPOSITORY_CONNECTION_ID" show="false" value=""/>
等等...
“上下文”和“參數”為空。 感謝您的幫助。
使用 xml 序列化:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Xml;
using System.Xml.Serialization;
namespace ConsoleApplication1
{
class Program
{
const string FILENAME = @"c:\temp\test.xml";
static void Main(string[] args)
{
XmlReader reader = XmlReader.Create(FILENAME);
XmlSerializer serializer = new XmlSerializer(typeof(ProcessType));
ProcessType processType = (ProcessType)serializer.Deserialize(reader);
}
}
[XmlRoot(ElementName = "ProcessType", Namespace = "TalendFile.xsd")]
public class ProcessType
{
[XmlAttribute("defaultContext")]
public string defaultContext { get; set; }
[XmlAttribute("jobType")]
public string jobType { get; set; }
[XmlElement("context", Namespace = "")]
public List<Context> context { get; set; }
[XmlArray("parameters", Namespace = "")]
[XmlArrayItem("elementParameter", Namespace = "")]
public List<Parameters> parameters { get; set; }
}
[XmlRoot("context", Namespace = "")]
public class Context
{
[XmlAttribute("confirmationNeeded")]
public string confirmationNeeded { get; set; }
[XmlAttribute("name")]
public string name { get; set; }
[XmlElement("contextParameter", Namespace = "")]
public ContextParameter contextParameter { get; set; }
}
[XmlRoot("contextParameter", Namespace = "")]
public class ContextParameter
{
[XmlAttribute("comment")]
public string comment { get; set; }
[XmlAttribute("name")]
public string name { get; set; }
[XmlAttribute("prompt")]
public string prompt { get; set; }
[XmlAttribute("promptNeeded")]
public string promptNeeded { get; set; }
[XmlAttribute("type")]
public string type { get; set; }
[XmlAttribute("value")]
public int value { get; set; }
}
[XmlRoot("parameters", Namespace = "")]
public class Parameters
{
[XmlAttribute("field")]
public string field { get; set; }
[XmlAttribute("name")]
public string name { get; set; }
[XmlAttribute("show", Namespace = "")]
public string show { get; set; }
private int? _value { get; set; }
[XmlAttribute("value")]
public string value {
get { return _value.ToString(); }
set { _value = value == string.Empty ? (int?)null : int.Parse(value); }
}
}
}
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