I have some XML which I would like to serialize into a class.
<Group>
<Employees>
<Employee>
<Name>Hari</Name>
<Age>30</Age>
</Employee>
<Employee>
<Name>Yougov</Name>
<Age>31</Age>
</Employee>
<Employee>
<Name>Adrian</Name>
<Age>28</Age>
</Employee>
</Employees >
The above XML can be realized in C# pretty much easily.
But I'm stumbled upon my requirement, where the XML looks like,
<Group>
<Employees>
<Hari Age=30 />
<Yougov Age=31 />
<Adrian Age=28 />
</Employees >
</Group>
Where Employees is a List<Employee> with KeyValuePair<string, int>("Hari", 30)
How do I design the classes and member variables to get the above serialized XML?
(Provided, there wont be any duplicate names in the employee list)
Any help is much appreciated.
*Serializing KeyValuePair
I would go with Linq2Xml in your case.
XDocument xDoc = XDocument.Load(......);
var emps = xDoc.Descendants("Employees").Elements()
.Select(x => new Employee() {
Name = x.Name.ToString(),
Age = int.Parse(x.Attribute("Age").Value)
})
.ToList();
PS: Age=30 is not valid. It shoudl be Age="30"
It is not a good idea to use the data as the schema; in particular, an awful lot of names are not valid as xml element names, but also: it just isn't good practice (for example, it makes it virtually useless in terms of schema validation). If you want to be terse, maybe something like:
<Employees>
<Add Name="Hari" Age="30" />
</Employees>
or
<Employees>
<Employee Name="Hari" Age="30" />
</Employees>
which can be done simply with:
[XmlArray("Employees"), XmlArrayItem("Employee")]
public List<Employee> Employees {get;set;}
and:
public class Employee {
[XmlAttribute]
public string Name {get;set;}
[XmlAttribute]
public int Age {get;set;}
}
XmlSerializer does not support the "content as an element name" serializer, unless you do everything yourself with IXmlSerializable from the parent element (it would have to be from the parent, as XmlSerializer would have no way of identifying the child to handle there).
Related
I have 2 XML Files and I want to get all the XNodes , which are in both files, only based on their same Attribute "id".
This is how an XML File looks like:
<parameters>
<item id="57">
<länge>8</länge>
<wert>0</wert>
</item>
<item id="4">
<länge>8</länge>
<wert>0</wert>
</item>
<item id="60">
<länge>8</länge>
<wert>0</wert>
</item>
</parameters>
Given a second XML File which looks like this:
<parameters>
<item id="57">
<länge>16</länge>
<wert>10</wert>
</item>
<item id="144">
<länge>16</länge>
<wert>10</wert>
</item>
</parameters>
Now I only want the XNode with the ID=57, since it is available in both files. So the output should look like this:
<item id="57">
<länge>8</länge>
<wert>0</wert>
</item>
I already did intersect both files like this:
aDoc = XDocument.Load(file);
bDoc = XDocument.Load(tmpFile);
intersectionOfFiles = aDoc.Descendants("item")
.Cast<XNode>()
.Intersect(bDoc.Descendants("item")
.Cast<XNode>(), new XNodeEqualityComparer());
This only seems to work, when all the descendant Nodes are the same. If some value is different, it won't work. But I need to get this to work on the same Attributes, the values or the descendants doesn't matter.
I also tried to get to the Attributes and intersect them, but this didn't work either:
intersectionOfFiles = tmpDoc
.Descendants(XName.Get("item"))
.Attributes()
.ToList()
.Intersect(fileDoc.Descendants(XName.Get("item")).Attributes()).ToList();
Am I missing something or is this a completely wrong approach?
Thanks in advance.
You should create your own IEqualityComparer that compares XML attributes you want:
public class EqualityComparerItem : IEqualityComparer<XElement>
{
public bool Equals(XElement x, XElement y)
{
return x.Attribute("id").Value == y.Attribute("id").Value;
}
public int GetHashCode(XElement obj)
{
return obj.Attribute("id").Value.GetHashCode();
}
}
which you would then pass to XML parsing code:
var intersectionOfFiles = aDoc.Root
.Elements("item")
.Intersect(
bDoc.Root
.Elements("item"), new EqualityComparerItem());
I also changed some parts of your XML parsing code (XElement instead of XNode since "item" is XML element and "id" is XML attribute).
Here is my xml file data
<Persons>
<Person>
<Name>john</Name>
</Person>
<Employee>
<Detail>
<Firstname>john</FirstName>
</Detail>
</Employee>
<Student>
<FullName>john</FullName>
</Student>
</Persons>
I want to replace "john" to "danny" in all places.
How can I do this in c# ?
One possible way using XDocument :
var doc = XDocument.Load("path_to_xml_file.xml");
//select all leaf elements having value equals "john"
var elementsToUpdate = doc.Descendants()
.Where(o => o.Value == "john" && !o.HasElements);
//update elements value
foreach(XElement element in elementsToUpdate)
{
element.Value = "danny";
}
//save the XML back as file
doc.Save("path_to_xml_file.xml");
Notice that XElement.Value contains all text nodes within the element, concatenated.
The significance of this is, for example, considering your XML as input, not only <Name> has value of "john" but also <Person>. But we only want to update the leaf elements not the ancestors.
*) I assumed you didn't really meant to tag the question by xmldocument so this answer using the newer XML API XDocument, though using XmlDocument is also possible.
I have an XML data of Employees, I want to parse this data and show it in Gridview using C# in ASP.NET.
Based on search parameters like Employee ID or Company ID or Department ID, I should be able to filter the data and update the GridView.
Checked few links in internet, but nothing matches this particular format.. Is it possible to achieve.. (Any links to) code will be helpful.
<?xml version="1.0" encoding="utf-8"?>
<Employees>
<Employee>
<Id> TG18-2002</Id>
<Name> AAPM^Test^Patterns</Name>
<Sex> O </Sex>
<Company>
<Id> 2.16</Id>
<Department>
<Id> 2.16.124</Id>
<Project>
<Id> 2.16.124.113543</Id>
</Project>
</Department>
</Company>
</Employee>
<Employee>
<ID> TG18-2003</ID>
<Name> AAPM^Test^Patt</Name>
<Sex> O </Sex>
<Company>
<ID> 2.16</ID>
<Department>
<ID> 2.16.124</ID>
<Project>
<ID> 2.16.124.113543</ID>
</Project>
</Department>
</Company>
</Employee>
<Employee>
</Employees>
Note: I am trying to build something like, this
Looking at the link you referenced, I think you're best off creating an Employee class and filling this with the XML data.
This will allow you to de-couple your data (in this case XML, but could be anything) from your view (in this case ASP.NET Web Forms, but again could be anything), which I find handy and seems to be common these days (MVVM etc..).
Another benefit is that you can turn a nested data source like XML into something a little flatter to make your view binding simpler, for example in the example you provided you could make the Company fields available as properties of the outer Employee class.
Yet another benefit is that if/when your view becomes responsive, then you can make properties of your view model observable, and therefore allow updates to the model, immediately update your view.
All that said, here is a small snippet showing your Employee class, and filling it from the XML sample you provided. I am using Linq to XML, but there are so many ways you could do this (adapters, readers, navigators...).
I think the important thing here is that you de-couple your data from the view.
class Employee
{
public string Id { get; set; }
public string Name { get; set; }
public string Sex { get; set; }
public Company Company { get; set; }
}
class Company
{
public string Id { get; set; }
public Department Department { get; set; }
}
class Department
{
public string Id { get; set; }
public Project Project { get; set; }
}
class Project
{
public string Id { get; set; }
}
var xml = #"<?xml version='1.0' encoding='utf-8'?>
<Employees>
<Employee>
<Id> TG18-2002</Id>
<Name> AAPM^Test^Patterns</Name>
<Sex> O </Sex>
<Company>
<Id> 2.16</Id>
<Department>
<Id> 2.16.124</Id>
<Project>
<Id> 2.16.124.113543</Id>
</Project>
</Department>
</Company>
</Employee>
<Employee>
<Id> TG18-2003</Id>
<Name> AAPM^Test^Patt</Name>
<Sex> O </Sex>
<Company>
<Id> 2.16</Id>
<Department>
<Id> 2.16.124</Id>
<Project>
<Id> 2.16.124.113543</Id>
</Project>
</Department>
</Company>
</Employee>
</Employees>
";
// read the xml into the class
var doc = XDocument.Parse(xml);
var data = (from row in doc.Root.Elements("Employee")
let company = row.Element("Company")
let dept = company.Element("Department")
let project = dept.Element("Project")
select new Employee
{
Id = row.Element("Id").Value.Trim(),
Name = row.Element("Name").Value.Trim(),
Sex = row.Element("Sex").Value.Trim(),
Company = new Company
{
Id = company.Element("Id").Value.Trim(),
Department = new Department
{
Id = dept.Element("Id").Value.Trim(),
Project = new Project
{
Id = project.Element("Id").Value.Trim()
}
}
}
});
// now you have a collection of 'employees', bind them..
Once we're that far, you need to decide how you want to query your data. The answer to this is as usual, it depends, and in this case I think it depends mostly on the size of the XML data you have and if it makes sense to bring this into memory or not.
If you can bring it into memory, then a collection of Employees is nice and simple to query using Linq and I would recommend this approach.
If the XML is large, then you will probably need to use an XMLReader to build your class. A little more complex, but the result should still be that you bind your grid to your class and keep the XML separate from the view.
DataSet xmlData = new DataSet();
xmlData.ReadXml(YourXMLPath);
GridviewControl1.DataSource = xmlData.Tables[0];
as far my understanding you need to do maipulication in data before showing it in Grid Control.
for that i recommend you to use LINQ query. you can manipulicate the things at client side with queries.
below i trying to solve the prob.
DataSet xmlData = new DataSet();
xmlData.ReadXml(YourXMLPath);
DataTable dt =From x in xmlData.Tables[0].AsEnumerable().Where(x=>x.Field<string>("Name").StartWith("A")) Selct(x=>x).CopytodDataTable;
now you can use "dt" for your data grid
xmlData.Tables[0]= dt;
GridviewControl1.DataSource = xmlData.Tables[0];
GridviewControl1.DataBind();//this line required if it is for asp.net
Hope it will helps you. :)
I googled for hours and didn't find anything.
I'm trying to make a Metro App which is reading from an online XML Service. Getting the XML is not the problem, i'm simply doing it like this ->
var xmlDoc = await XmlDocument.LoadFromUriAsync(new Uri(url));
but now the problem is, how to convert it into a list or something readable like this.
The XML I want to read is really huge and i don't want to go through all nodes with foreach.
A simple Array/List with all nodes and innerText as Value would be awesome.
Is this possible? If yes.. how ?
The structure of my XML is like this ->
<?xml version="1.0" encoding="UTF-8"?>
<city>
...
<credit>
...
</credit>
<forecast>
<date value="2013-11-08">
...
<time value="06:00">
...
</time>
<time value="11:00">
...
</time>
<time value="17:00">
...
</time>
<time value="23:00">
...
</time>
...
</date>
<date value="2013-11-09">
<same content here>
</date>
<date value="2013-11-09">
<same content here>
</date>
</forecast>
</city>
as you can see... there's a lot of information in the XML and I need nearly everything. In Actionscript I would realize it with a XMLList and make 3 Lists of the date Tags with content, so i can use
xmllist1.time[0] - xmllist1.time[3]
xmllist2.time[0] - xmllist2.time[3]
xmllist3.time[0] - xmllist3.time[3]
to get my data.
And now i want this XMLList in C#... I hope it's possible...Thx 4 help
If I understand you correctly, you want to parse the list of "city" items from the xml.
I do something similar using XDocument and Linq like this and it should work for you:
XDocument xdoc = <add your code to get xml from url>;
var ns = xdoc.Root.GetDefaultNamespace();
var cityList = from query in xdoc.Descendants(ns + "city")
select new CityItem
{
Date = (string)query.Element(ns + "date").Attribute("value").Value,
Time = (string)query.Element(ns + "time").Attribute("value").Value
};
public class CityItem
{
public string Date {get;set;}
public string Time {get;set;}
}
I want to access an attribute type where the value of abc is female
XElement xelement = XElement.Load("..\\..\\Employees.xml");
var name = from nm in xelement.Elements("Employee")
where (string)nm.(Element("Abc") == "Female").Attribute("Type") == "Att"
select nm;
This didn't work. Any way to make it happen?
Something like this would work. It would be useful to see the Xml though.
var doc = XDocument.Load("c:\\temp\\test.xml");
var result = doc.Descendants("Employee")
.Where(x=>(string)x.Value== "female")
.Select(x=>x.Attribute("type").Value);
This is assuming the xml is something like this, the query would return "foo1".
<?xml version="1.0"?>
<root>-
<Employee type="foo">
<abc>male</abc>
</Employee>
<Employee type="foo1">
<abc>female</abc>
</Employee>
<Employee type="foo2">
<abc>male</abc>
</Employee>
</root>
Your code doesn't make any sense.
You cannot nest comparisons and casts and objects like that.
Instead, you need to use the && operator to check each condition separately.
Use XMLReader
More information from MSDN:http://msdn.microsoft.com/en-us/library/system.xml.xmlreader.aspx