calling getpaymentamount into my gui.

Steven

Well it is apparent i am new to c# cause i am having a problem calling a GetPaymentAmount into my GUI.

This is my interface:
namespace Invoice
{
    public interface IPaytable
    {
        decimal GetPaymentAmount();
    }
}
This is my method
public decimal GetPaymentAmount()
        {

               return priceper * quantity;

            }
and i am completely lost as how to make it to where i can display the information from the getpaymentamount into my Results textbox as such:
restxtbx.Text += "Total for this transaction is :$" + WHAT GOES HERE? ;

2 Replies

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Steven18y ago
ok actually i needed to add another class and then add in the call to my gui then do what you said.
Thanks alot for your help
Alan18y ago
This is what you need:

restxtbx.Text += "Total for this transaction is :$" + GetPaymentAmount().ToString();

GetPaymentAmount() produces a decimal result which you then have to convert to a string to be able to add it to the first part of the line. The whole string is then added to what's already in the TextBox because of the += operator.