Question

I need to capture any exceptions thrown by the validator but I cannot figure out how to due it. Here is the code I have tried:

internal static class XMLValidator
{
    public static void Validate(XElement elem)
    {            
        string xsdMarkup;

        using(var file = new StreamReader(Constants.Xsd))
        {               
            xsdMarkup = file.ReadToEnd();
        }       

        XmlSchemaSet schema = new XmlSchemaSet();
        bool valid = true;
        schema.Add(XmlSchema.Read(XElement.Parse(xsdMarkup).CreateReader(), (o, e) => { }));
        new XDocument(elem).Validate(schema, (o, e) => { valid = false; exception = e; });
        if (valid == false)
        {
            throw exception;               
        }
        valid = true;                          
    }
}

I get a “the name exception does not exist in current context” error. I’m pretty sure that the problem is that I have not given exception a data type. However I have no idea what type to use.

I tried adding var before the exception but then it’s not recogonized inside of the if statement and of course var cannot be declared outside of a method

I then tried declaring exemption globally as a string and setting to e like this:

exception = e.ToString();

but then I can’t throw it inside of the if statement.

How would I go about doing this?

Answer 1

The delegate you’re using creates an XmlSchemaValidationException:

    XmlSchemaValidationException exception = null;
    new XDocument(elem).Validate(schema, (o, e) => { valid = false; exception = e.Exception; });
    if (valid == false)
    {
        throw exception;               
    }