在 c# 中使用 xmltextReader 更新 xml 文件
本文关键字:更新 xml 文件 xmltextReader | 更新日期: 2023-09-27 18:31:29
我有像这个测试这样的xml文件.xml:
<?xml version="1.0" encoding="utf-8" ?>
<Message>
<Item Name ="msg1" Status ="false"/>
<Item Name="msg2" Status="false"/>
</Message>
System.Xml.XmlTextReader textReader = new System.Xml.XmlTextReader(test.xml);
System.Xml.XmlDocument xdoc = new System.Xml.XmlDocument();
xdoc.Load(test.xml);
var testreader = xdoc.DocumentElement.ChildNodes;
string name = string.Empty;
string value = string.Empty;
if (message.MsgType == 10005)
{
value = "true";
}
else if (message.MsgType == 10002)
{
value = "false";
}
foreach (var mychild in testreader)
{
var childatt = ((System.Xml.XmlElement)mychild);
name = childatt.Attributes["Name"].Value;
value = childatt.Attributes["Status"].Value;
}
我必须对以下事情做什么:
- 我必须使用 xmltestReader 和 xmldocument 将更新的值保存在 xml 文件中
- 我收到来自第三个客户端的关于 messageID 的请求,所以我必须检查它是否存在于 xml 文件中(例如,获取 msg1 的请求,所以我必须匹配它 xml 文件是否存在)。
希望我的问题很清楚。
//Get Message
//txtsearch text u have to pass message Id
var xmlFilePath = Server.MapPath("Test.xml");
XmlDocument xmlDoc = new XmlDocument();
xmlDoc.Load(xmlFilePath);
XmlNodeList nodeList = xmlDoc.DocumentElement.SelectNodes("/TableMessage/Message");
string msgID = "",msgname="";
foreach (XmlNode node in nodeList)
{
if (node.SelectSingleNode("Message_Details").InnerText == "True" && node.SelectSingleNode("Message_id").InnerText==txtsearchtext.Text)
{
msgID = node.SelectSingleNode("Message_id").InnerText;
msgname = node.SelectSingleNode("Message_name").InnerText;
}
}
//store Updated Xml in ur project xml
//get the information from end user and pass the value to correspoding fields
XmlDocument xmlEmloyeeDoc = new XmlDocument();
xmlEmloyeeDoc.Load(Server.MapPath("~/Test.xml"));
XmlElement ParentElement = xmlEmloyeeDoc.CreateElement("Message");
XmlElement ID = xmlEmloyeeDoc.CreateElement("Message_id");
ID.InnerText = "6";
XmlElement message = xmlEmloyeeDoc.CreateElement("Message_name");
message.InnerText = "Message6";
XmlElement Details = xmlEmloyeeDoc.CreateElement("Message_Details");
Details.InnerText = "True";
ParentElement.AppendChild(ID);
ParentElement.AppendChild(message);
ParentElement.AppendChild(Details);
xmlEmloyeeDoc.DocumentElement.AppendChild(ParentElement);
xmlEmloyeeDoc.Save(Server.MapPath("~/Test.xml"));
I hope that code will help u
you will customize ur xml file like this
<?xml version="1.0" encoding="utf-8"?>
<TableMessage>
<Message>
<Message_id>Message1</Message_id>
<Message_name>Message1</Message_name>
<Message_Details>True</Message_Details>
</Message>
<Message>
<Message_id>Message2</Message_id>
<Message_name>Message2</Message_name>
<Message_Details>True</Message_Details>
</Message>
<Message>
<Message_id>Message3</Message_id>
<Message_name>Message3</Message_name>
<Message_Details>False</Message_Details>
</Message>
</TableMessage>