Need to call a private double method for a button

Question

1.00/5 (3 votes)

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// The private method below is what I am trying to call for

protected void CalculateButton_Click(object sender, EventArgs e)

and I have no idea how to call it correctly so I can calculate the daily cost * number of days.

C#

private Double CalculateCostOfStay(String Place, String Days)
        {
            Double TotalCost;
            Double NumberOfDays;
            NumberOfDays = StringToNumber(Days);
            if (Place == "China")
            { TotalCost = 225 * NumberOfDays; }
            else if (Place == "England")
            { TotalCost = 350 * NumberOfDays; }
            else if (Place == "France")
            { TotalCost = 300 * NumberOfDays; }
            else if (Place == "Germany")
            { TotalCost = 275 * NumberOfDays; }
            else if (Place == "Spain")
            { TotalCost = 250 * NumberOfDays; }
            else
            { TotalCost = 0; }
            return TotalCost;
            
           
        }

What I have tried:

// I thought all I had to do was

CalculateCostOfStay();

// It's giving me an error saying there is no argument and I'm not sure if I need to put parameters into it which I have tried but can not get it to work.

Posted 23-Mar-17 5:49am

Member 13079959

Updated 23-Mar-17 5:56am

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Comments

Karthik_Mahalingam 23-Mar-17 11:52am

what is place and days?

Member 13079959 23-Mar-17 11:56am

The place comes out of one listbox with the shown countries and days are from another listbox with set amounts

Karthik_Mahalingam 23-Mar-17 12:01pm

then pass the listbox values as parameter to the function

Member 13079959 23-Mar-17 12:03pm

thank you!

Karthik_Mahalingam 23-Mar-17 12:04pm

welcome

[no name] 23-Mar-17 11:57am

If you cannot figure out how to call a function, you need to get yourself a decent book on C# programming and work through it. You lack fundamental knowledge of programming.

Member 13079959 23-Mar-17 12:03pm

such a problem solver you are

[no name] 23-Mar-17 12:05pm

Well we aren't here to teach you programming.

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Dave Kreskowiak · Accepted Answer · 2017-03-23T05:56:00

Solution 1

Just by looking at the header of the CalculateCostOfStay method, it's expecting you to pass in two parameters, both strings. You're not doing that. You're passing in nothing.

So, where do these two parameter values come from? That's what you need to pass in.

Posted 23-Mar-17 5:56am

Dave Kreskowiak