Dynamic Expresso Data Types

The language predefines the primitive data types, and reserved keywords name them.

The Dynamic Expresso manages the following list of C# primary types.

• Object/object
• Boolean/bool
• Char/char
• String/string
• SByte/Byte/byte
• Int16/UInt16/Int32/int/UInt32/Int64/long/UInt64
• Single/Double/double/Decimal/decimal
• DateTime/TimeSpan
• Guid
• Math/Convert

You can add additional types by using the Interpreter.Reference method, as shown below.

public static void Example1()
{
    Interpreter interpreter = new Interpreter();
    interpreter.Reference(typeof(Customer));

    interpreter.SetVariable("customer", new Customer()
    {
        FirstName = "Mark",
        LastName = "Upston",
        BirthDate = new DateTime(1977, 12, 10)
    });

    string expression = "customer.FirstName + ' ' + customer.LastName";

    var result = interpreter.Eval(expression);
    Console.WriteLine(result);
}

public class Customer
{
    public string FirstName { get; set; }
    public string LastName { get; set; }
    public DateTime BirthDate { get; set; }
}

Now when you run the above code, you will see the following output.

Mark Upston