Question

I have the following web service function-

    [ServiceContract]
public interface ITest
{
    [OperationContract]
    double Sum(double a, double b);

}
public class Test : ITest
{
    public double Sum(double a, double b)
    {
        double answer = a + b;
        return answer;
    }

And I am implementing it using this –

        double a = double.Parse(textBox1.Text);
        double b = double.Parse(textBox2.Text);
        double sum = sc.Sum(a, b);

My problem being this only handles two doubles, how could I get it to handle several from just one text box, i.e. 1,2,3,4 with the response being 10?

Answer 1

If it wasn’t a web service you could use a special keyword params, like

public double Sum(params double[] items)
{
    //do sum
    return answer;
}

But web services don’t know what params means so you would need to use something like List<double> or double[], e.g.

public double Sum(List<double> items)
{
    return items.Sum();
}