How does one test a file to see if it's a valid XML file before loading it with XDocument.Load()?

Question

I\'m loading an XML document in my C# application with the following:

XDocument xd1 = new XDocument();
xd1 = XDocument.Load(myfile);

but be

Answer 1

If you have an XSD for the XML, try this:

using System;
using System.Xml;
using System.Xml.Schema;
using System.IO;
public class ValidXSD 
{
    public static void Main()
    {
        // Set the validation settings.
        XmlReaderSettings settings = new XmlReaderSettings();
        settings.ValidationType = ValidationType.Schema;
        settings.ValidationFlags |= XmlSchemaValidationFlags.ProcessInlineSchema;
        settings.ValidationFlags |= XmlSchemaValidationFlags.ReportValidationWarnings;
        settings.ValidationEventHandler += new ValidationEventHandler(ValidationCallBack);

        // Create the XmlReader object.
        XmlReader reader = XmlReader.Create("inlineSchema.xml", settings);

        // Parse the file. 
        while (reader.Read());
    }

    // Display any warnings or errors.
    private static void ValidationCallBack (object sender, ValidationEventArgs args) 
    {
        if (args.Severity == XmlSeverityType.Warning)
            Console.WriteLine("\tWarning: Matching schema not found.  No validation occurred." + args.Message);
        else
            Console.WriteLine("\tValidation error: " + args.Message);
    }  
}

Reference is here:

http://msdn.microsoft.com/en-us/library/system.xml.xmlreadersettings.validationeventhandler.aspx