Call Property based on a string of its name

I need to call a public property of a class based on the string value of its name, as I won't know until run time what properties are required. I'm trying to use reflections unsuccessfully. The class looks like this:

class FieldCalculation
{
    public string MyValue
    {
        get
        {
            return "Test Data";
        }
    }
}

I think access the value of the property should look something like this:

FieldCalculation myClass = new FieldCalculation();
string value = myClass.GetType().GetProperty("MyValue");

Any help would be appreciated.