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Before inserting new element in xml check if exists the valu

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Before inserting new element in xml check if exists the valu

Rahul Khanna

12yAsked Jul 20, 2014, 2:17 PM2kVisual Basic .NET

Hi,

I have below a xml file with the below format:

India
USA
UK

string newCountry="UAE"

I want to insert this "UAE" country to the above xml file, before that I want to check whether "UAE" is already exists in the xml. If not exists then only want to insert otherwise no operation. How can I do this?

2 Replies

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Jignesh Trivedi12y ago
Hi,
You can also do same thing using DataSet....
Please refer below link it might help you.
http://babasahebkale.blogspot.in/2012/11/insert-edit-update-delete-in-xml-file.html
http://www.dotnetfox.com/articles/insert-delete-update-records-in-xml-file-Asp-Net-using-C-Sharp-1016.aspx
hope this will help you.
Vulpes12y ago
Try this:

using System;
using System.Linq;
using System.Xml.Linq;

class Program
{
static void Main()
{
string newCountry="UAE";
XElement root = XElement.Load("rahul.xml");
var countries = root.Element("Countries");
XElement search = countries.Elements("country").Where(country => country.Value == newCountry).FirstOrDefault();
if (search == null)
{
countries.Add(new XElement("country", newCountry));
root.Save("rahul.xml");
}
}
}