MAUI -Crud operations in XML

Question

Hi,

I'm using Maui app , I need to create/add/delete operations in XML.

The node is Job id(idenatifier) , vault.....

1. How I create the xml.
2. How I add new node to xml.
3. How I delete node from XML using Job id(idenatifier).

Thanks,

Answer 1

Hello,

I'm using Maui app , I need to create/add/delete operations in XML.

You can use System.Xml.XmlDocument to create/add/delete operations in XML.

How I create the xml.

We can save the xml file to the string path = FileSystem.Current.AppDataDirectory + "/jobs.xml"; firstly, then you can create a <Jobs> node in the xml and save it by Save method.

    // Create XML document
     XmlDocument xmlDoc = new XmlDocument();
    // Create root element
     XmlElement rootElement = xmlDoc.CreateElement("Jobs");
     xmlDoc.AppendChild(rootElement);
    // Save the XML document to a file   
     xmlDoc.Save(path);

How I add new node to xml.

Before adding new node, you need to load this XML by path, then create new node by xmlDoc.CreateElement, add attributes to the Job node and append the Job node to the root element

// Load the existing XML document
     XmlDocument xmlDoc = new XmlDocument();
     xmlDoc.Load(path);

    // Create a new Job node
     XmlElement jobElement = xmlDoc.CreateElement("Job");

    // Add attributes to the Job node
     jobElement.SetAttribute("id", "123");

    // Append the Job node to the root element
     xmlDoc.DocumentElement.AppendChild(jobElement);

    // Save the modified XML document
     xmlDoc.Save(path);

How I delete node from XML using Job id(idenatifier).

Before you delete the node, you need to load the XML as well.Then, you can get the job node by the job id, delete it by xmlDoc.DocumentElement.RemoveChild method.

...load the XML

// Get the Job node to be deleted based on the Job ID
     XmlNode jobNodeToDelete = xmlDoc.SelectSingleNode("/Jobs/Job[@id='123']");

    // Check if the node exists before attempting to delete
     if (jobNodeToDelete != null)
     {
         // Remove the Job node from the XML document
         xmlDoc.DocumentElement.RemoveChild(jobNodeToDelete);
        // Save the modified XML document
         xmlDoc.Save(path);
     }

Best Regards,

Leon Lu

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