列表来处理双打数组 [英] list to handle array of doubles

问题描述

有没有办法处理双打列表，我可以使用下面的代码处理整数，但不确定如何处理双打数组.

Is there a way to handle a list of doubles I can handle ints with the code below but not sure how to handle array of doubles.

    {
CalculateSumOfList.ServiceReference1.Service1SoapClient client = new CalculateSumOfList.ServiceReference1.Service1SoapClient();
CalculateSumOfList.ServiceReference1.ArrayOfInt arrayOfInt = new CalculateSumOfList.ServiceReference1.ArrayOfInt();
arrayOfInt.AddRange(listDouble); // error here!
string result = client.CalculateSum(arrayOfInt);
label1.Text = Convert.ToString(result);

    }

这是我需要的而不是ArrayOfInt的双精度阵列错误吗?

This is all wrong tho I need instead of ArrayOfInt to have Array of double?

客户端:

    namespace CalculateSumOfList
    {
        public partial class Form1 : Form
        {

            List<Double> listDouble = new List<Double>();


            public Form1()
            {
                InitializeComponent();
            }
            private void Form1_Load(object sender, EventArgs e)
            {

            }
            private void listBox1_SelectedIndexChanged(object sender, EventArgs e)
            {

            }

            private void button1_Click(object sender, EventArgs e)
            {

                listDouble.Add(Convert.ToDouble(textBox1.Text));

                textBox1.Clear();
                listBox1.Items.Clear();
                for (int i = 0; i < listDouble.Count; i++)
                {
                    listBox1.Items.Add(listDouble[i]);
                } 

                textBox1.Clear();
                listBox1.Items.Clear();
                for (int i = 0; i < listDouble.Count; i++)
                {
                    listBox1.Items.Add(listDouble[i]);
                }
            }

            private void button2_Click(object sender, EventArgs e)
            {
                CalculateSumOfList.ServiceReference1.Service1SoapClient client = new CalculateSumOfList.ServiceReference1.Service1SoapClient();
                CalculateSumOfList.ServiceReference1.ArrayOfInt arrayOfInt = new CalculateSumOfList.ServiceReference1.ArrayOfInt();
                arrayOfInt.AddRange(listDouble); // error here!
string result = client.CalculateSum(arrayOfInt);
label1.Text = Convert.ToString(result);



            }



        }
    }

Web方法:

namespace CalculateWebServiceSum
{
    /// <summary>
    /// Summary description for Service1
    /// </summary>
    [WebService(Namespace = "http://tempuri.org/")]
    [WebServiceBinding(ConformsTo = WsiProfiles.BasicProfile1_1)]
    [System.ComponentModel.ToolboxItem(false)]
    // To allow this Web Service to be called from script, using ASP.NET AJAX, uncomment the following line. 
    // [System.Web.Script.Services.ScriptService]
    public class Service1 : System.Web.Services.WebService
    {

        [WebMethod]


        public string CalculateSum(List<double> listDouble)
        {
            return listDouble.Sum().ToString();



        }
    }
}

推荐答案

我不清楚您的问题是什么，但是:

I'm not clear what your question is, but:

如果 arrayOfInt.AddRange(listOfDouble)未编译，则可以使用Linq并执行

If arrayOfInt.AddRange( listOfDouble ) is not compiling you could use Linq and do

arrayOfInt.AddRange( listOfDouble.Select( d => (int)d ).ToList() );

client.CalculateSum方法需要类型为 List< double>

The method client.CalculateSum expects a parameter of type List<double>

1)如果可能，我将其更改为更灵活的公共字符串CalculateSum(IEnumerable< double>项)

1) I would change that if possible to be public string CalculateSum(IEnumerable<double> items) which is more flexible

2)如上，您可以使用 list.Select(n =>(double)n).ToList()转换任何可转换类型的列表，假设(double)n是有效的演员表.

2) As above you can convert a list of any convertible type using list.Select(n => (double)n).ToList() assuming that (double)n is a valid cast.

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