Defining Variables

You can declare as many variables this way as you need. Note that the variables that you declare this way can only be used from within a predicate. For example:

CopyC#

using (var mgr = new XmlManager(ManagerInitOptions.AllowExternalAccess) { DefaultContainerType = XmlContainerType.WholeDocContainer })
{
    using (var cont = mgr.OpenContainer(baseUri + testdb,ContainerSettings.Create))
    {
        //create the query context
        var queryContext = mgr.CreateQueryContext(EvaluationType.Eager);
        //set some namespace values
        queryContext.SetNamespace("fruits","http://groceryItem.dbxml/fruits");
        queryContext.SetNamespace("vegetables", "http://groceryItem.dbxml/vegetables");
        cont.AddAlias("testdb");
        queryContext.EvaluationType = EvaluationType.Eager;
        queryContext.SetVariableValue("myVar", "Artichoke");
        string xquery = "collection('testdb')/product[item=$myVar]";
        //ALWAYS close the container!
        cont.Close();
    }
}