Read Write XML Data with C# in file

Submitted by Administrator on Tue, 02/09/2010 - 14:56

Tags:

Requirements
Microsoft Visual studio 2008
http://www.microsoft.com/visualstudio/en-us/default.mspx

Creating a XML document

To create a XML document

using

System.Xml.Linq;
..

#region

CreateCustomerXMLfile

public

static void CreateCustomerXMLfile(string filename)
{
XElement connections =
new XElement("Customers",
new XElement("Customer",
new XElement("Id", "0")
new XElement("Name", "default")));
connections.Save(filename);
}

#endregion

To call the function and create the XML file in c:\temp\customer.xml

CreateCustomerXMLfile("c:\\temp\\customer.xml");

Add a record to the Customer XML document

To add a record to the customer xml document we create the following function

#region

AddCustomerToXMLfile
public static string AddCustomerToXMLfile(string XMLfile, string Id, string Name)
{
XDocument XMLDoc = XDocument.Load(XMLfile);
XElement root = XMLDoc.Root;
root.Add(new XElement("Customer",
new XElement("Id", Id),
new XElement("Name", Name)));
XMLDoc.Save(XMLfile);
return Id;
}
#endregion

Call the function a new record will be created with id 1 name Mark

AddCustomerToXMLfile("c:\\temp\\Customer.xml","1","Mark");

Update a record in a XML document

First we create a customer class

#region

Customer Class
public class Customer
{
public string ID;
public string NAME;
}
#endregion

Next we create the function to update the specific record we will call this function UpdateCustomerInXMLfile.
The function wil try to find the Id in the XML document and update it with the Name parameter.

#region UpdateCustomerInXMLfile
string UpdateCustomerInXMLfile(string XMLfile, string Id, string Name)
{
Customer customer = new Customer();
XDocument XMLDoc = XDocument.Load(XMLfile);

IEnumerable<XElement> elem_list = from elem in XMLDoc.Descendants("Customer")
where elem.Element("Id").Value == customer.ID
select elem;

XElement[] elem_array = elem_list.ToArray();
foreach (XElement elem in elem_array)
{
elem.Element("Id").Value = customer.ID.ToString();
elem.Element("Name").Value = customer.NAME.ToString();
}
return Id;
}
#endregion

Now we are ready to call the update function

UpdateCustomerInXMLfile(

"c:\\temp\\Customer.xml", "1", "Johny");

The name "Mark" will have changed in the XML document to "Johny"

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Comments

How to read and write XML in C#

Submitted by Anonymous on Wed, 02/29/2012 - 12:05.

Very nice article. I really enjoyed it reading. And it also cleared lot of my doubts about reading and writing XML in C#.Net, Well done job! Check this link too.... How to read and write XML in C# It helped me lot in completing my task. Thanks Everyone for precious post!

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Read Write XML Data with C# in file

Comments

How to read and write XML in C#

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