New SAX parsing model for .NET
<?xml version="1.0" encoding="UTF-8"?>
<Employees>
<Employee EmployeeID="1286" SupervisorID="666">
<Name>Amanda Dion</Name>
<Salary>2200</Salary>
<Gender>Female</Gender>
<!--Hardworking employee!-->
</Employee>
<Employee EmployeeID="1287" SupervisorID="666">
<Name>John Smith</Name>
<Salary>3200</Salary>
<Gender>Male</Gender>
<!--Hardly working employee!-->
</Employee>
<Employee EmployeeID="1288" SupervisorID="666">
<Name>Sheldon Cohn</Name>
<Salary>5600</Salary>
<Gender>Male</Gender>
</Employee>
</Employees>To parse the XML above, we need to write our parsing code as below with delegates.
static bool ReadDoc(string file, List<Employee> list)
{
SequelMaxNet.Document doc = new SequelMaxNet.Document();
doc.RegisterStartElementDelegate("Employees|Employee", (elem) =>
{
Employee emp = new Employee();
emp.EmployeeID = elem.Attr("EmployeeID").GetInt32(0);
emp.SupervisorID = elem.Attr("SupervisorID").GetInt32(0);
list.Add(emp);
});
doc.RegisterEndElementDelegate("Employees|Employee|Name", (text) =>
{
list[list.Count - 1].Name = text;
});
doc.RegisterEndElementDelegate("Employees|Employee|Gender", (text) =>
{
list[list.Count - 1].Gender = text;
});
doc.RegisterEndElementDelegate("Employees|Employee|Salary", (text) =>
{
Double.TryParse(text, out list[list.Count - 1].Salary);
});
doc.RegisterCommentDelegate("Employees|Employee", (text) =>
{
list[list.Count - 1].Comment = text;
});
return doc.Open(file);
}