File used by another process exception

I have two C # .NET applications:

• One application (say App1) writes data to an XML file.
• The second application (lets call it App2) reads data from the same XML file and updates.

App2 continually monitors changes to the XML file for which I am using FileSystemWatcher

.

As soon as App1 finishes writing to the file, App2 reads in the changes.

I made sure my App2 reads XML with read-only access, but still sometimes my App1 throws an exception:

"The process cannot access the file" C: \ xmlFile "because it is being used by another process." Here is my code snippet in App2 that reads a file.

Here is my code:

using (var stream = File.Open(filePath,FileMode.Open,FileAccess.Read))
{
    using (XmlReader reader = XmlReader.Create(stream))
    {
        while (reader.Read())
        {
            // Only detect start elements.
            if (reader.IsStartElement())
            {
                switch (reader.Name)
                {
                    case "Component":
                        fileElements.ComponentName = reader["Name"];
                        fileElements.DateRun = reader["DateRun"];
                        fileElements.Passed = reader["Passed"];
                        break;
                }
            }
        }

        if (filePath.ToLower().Contains("ebsserver"))
        {
            UpdateDataTable1(fileElements);
        }
        else if (filePath.ToLower().Contains("ebsui"))
        {
            UpdateDataTable2(fileElements);
        }
        else
        {
            UpdateDataTable3(fileElements);
        }
    }
}

      

        
        
        
      

    

How can I fix this?