Web/ajax/Runner.aspx.cs

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using System;
using System.Collections;
using System.Configuration;
using System.Data;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.HtmlControls;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Xml.Linq;
using WMPT.Common;
using WMPT.SQLServerDAL;
using WMPT.Model;


public partial class ajax_Runner : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {

        Response.Clear();
        string fuc = Request["fuc"];

        switch (fuc)
        {
            case "distance":
                string dis = CalculateDistance(Convert.ToDouble(Request["flat"]), Convert.ToDouble(Request["flng"]), Convert.ToDouble(Request["tlat"]), Convert.ToDouble(Request["tlng"])).ToString("f1");
                Response.Write(dis);
                break;
            case "sendfee":
                string fee = CalculateFee(Convert.ToDouble(Request["flat"]), Convert.ToDouble(Request["flng"]), Convert.ToDouble(Request["tlat"]), Convert.ToDouble(Request["tlng"])).ToString("f1");
                Response.Write(fee);
                break;
        }

        Response.End();
      
    }

    /// <summary>
    /// 配送距离的计算
    /// </summary>
    /// <param name="flat"></param>
    /// <param name="flng"></param>
    /// <param name="tlat"></param>
    /// <param name="tlng"></param>
    /// <returns></returns>
    protected double CalculateDistance(double flat, double flng, double tlat, double tlng)
    {
        double radLat1 = rad(flat);
        double radLat2 = rad(tlat);
        double a = radLat1 - radLat2;
        double b = rad(flng) - rad(tlng);
        double s = 2 * Math.Asin(Math.Sqrt(Math.Pow(Math.Sin(a / 2), 2) + Math.Cos(radLat1) * Math.Cos(radLat2) * Math.Pow(Math.Sin(b / 2), 2)));
        s = s * 6378.137;
        s = Math.Round(s * 10000) / 10000;
        return s;
    }