Remove element from XML based on condition

Question

0.00/5 (No votes)

See more:

Hi,

Below is the XML structure I have.

XML

XML

<Info>
<Details>
<ID>user</ID>
<StartDate>23-10-2016</StartDate>
<EndDate>22-10-2016</EndDate>
</Details>
<Details>
<ID>user1</ID>
<StartDate>23-10-2016</StartDate>
<EndDate>24-10-2016</EndDate>
</Details>
<Details>
<ID>user2</ID>
<StartDate>23-10-2016</StartDate>
<EndDate>22-11-2016</EndDate>
</Details>
</Info>

C#

Now I need to compare the EndDate node with today's date. If EndDate is lesser than today's date then I need to remove the whole contents of Details. For Ex: Let's assume strDate a string has today's date.

The below code takes all the values of EndDate and now how can I compare the string value and loop through xml elements and delete them.

C#

Now this whole portion should be deleted as of comparing with todays date.

XML

<Details>
<ID>user</ID>
<StartDate>23-10-2016</StartDate>
<EndDate>22-10-2016</EndDate>
</Details>

Really appreciate any suggestions on this.

What I have tried:

object[] arr = xDos.Descendants("Details").Elements("EndDate").
Select(element = element.Value).ToArray();

Posted 23-Oct-16 20:01pm

vignesht50

Updated 23-Oct-16 20:02pm

v2

Add a Solution

2 solutions

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Scyldshefing · Answer 1 · 2016-10-28T22:39:00

This solution will will work but could fail if the XML either does not contain the EndDate node or the EndDate node is not a valid Date (I have created it as a Unit Test) [This could be mitigated by some form of XSD validation of the XML where the EndDate is a Mandatory Date]

C#

public void TestMethod1()
        {
            var todaysDate1 = new DateTime(2001, 10, 30); // no nodes selected
            var todaysDate2 = new DateTime(2016, 10, 28); // one node selected
            var todaysDate3 = new DateTime(2016, 10, 30); // 2 nodes selected
            var todaysDate4 = new DateTime(2016, 12, 25); // 3 nodes selected

            var xmlData ="<Info><Details><ID>user</ID><StartDate>23-10-2016</StartDate><EndDate>22-10-2016</EndDate></Details><Details><ID>user1</ID><StartDate>23-10-2016</StartDate><EndDate>29-10-2016</EndDate></Details><Details><ID>user2</ID><StartDate>23-10-2016</StartDate><EndDate>22-11-2016</EndDate></Details></Info>";
            XDocument xdoc = XDocument.Parse(xmlData);

            var nodes = xdoc.Descendants("Details");
            nodes.Where(x => DateTime.Compare(DateTime.Parse(x.Element("EndDate").Value), todaysDate1) > 0).Remove();

            Assert.AreEqual(0, xdoc.Descendants("Details").Count());

            // Test 2
            xdoc = XDocument.Parse(xmlData);
            nodes = xdoc.Descendants("Details");
            nodes.Where(x => DateTime.Compare(DateTime.Parse(x.Element("EndDate").Value), todaysDate2) > 0).Remove();
            Assert.AreEqual(1, xdoc.Descendants("Details").Count());

            // Test 3
            xdoc = XDocument.Parse(xmlData);
            nodes = xdoc.Descendants("Details");
            nodes.Where(x => DateTime.Compare(DateTime.Parse(x.Element("EndDate").Value), todaysDate3) > 0).Remove();
            Assert.AreEqual(2, xdoc.Descendants("Details").Count());

            // Test 4
            xdoc = XDocument.Parse(xmlData);
            nodes = xdoc.Descendants("Details");
            nodes.Where(x => DateTime.Compare(DateTime.Parse(x.Element("EndDate").Value), todaysDate4) > 0).Remove();
            Assert.AreEqual(3, xdoc.Descendants("Details").Count());
        }

Scyldshefing · Answer 2 · 2016-10-28T23:01:00

The issue of the Null exception bothered me - but thanks to Resharper here is an alternative (I have not been able to resolved the invalid date issue)

C#

nodes.Where(x =>
                {
                    var element = x.Element("EndDate");
                    return element != null && DateTime.Compare(DateTime.Parse(element.Value), todaysDate1) > 0;
                }).Remove();

Remove element from XML based on condition

2 solutions

Solution 1

Solution 2

Add your solution here

Preview 0