我们可以将参数传递给C＃属性吗？

Question

We have properties for a class which has getter - returns the value

Ex:

Public Employee Department
{
get { return GetTheValue("Mid Level") ;} 
}

GetTheValue is our framework method which takes parameter value and returns string. The Parameter vlaue is hard coded now which we want to make that dynamic... We want to pass that Parameter Value directly to Property. Can we pass parameter to property ? Don't want to make that as method, looking to pass parameter to property only.. how can I achieve this ?

Answer 1

You could use an indexer which resembles a property...

public Employee this[string department]
{
    get
    {
        return GetTheValue(department);
    }
}
...

var instance = new Whatever();
var employee = instance["Mid Level"]

but that is abuse . I would just use a method instead...

public Employee GetDepartment(string department)
{
    return GetTheValue(department);
}

Answer 2

What you're doing perfectly describes the purpose of a method. You are looking to do this:

public Employee GetDepartment(string value)
{
    return GetTheValue(value);
}

Because what you're asking is to add a parameter to a property, and a property simply is syntactic sugar for two methods, get_xxx and set_xxx where optimizations can be made regarding the calling convention. As such, properties were designed to not be ideal for what you are doing.