using?System;
using?System.Collections.Generic;
using?System.ComponentModel;
using?System.Data;
using?System.Drawing;
using?System.Linq;
using?System.Text;
using?System.Windows.Forms;

namespace?latlon_dis
{



????public?partial?class?Form1?:?Form
????{
????????public?double?latA;
????????public?double?latB;
????????public?double?lonA;
????????public?double?lonB;
????????public?Form1（）
????????{
????????????InitializeComponent（）;
????????}

????????public?double?rad（double?d）
????????{
????????????return?d?*?Math.PI?/?180.00;//convert?degree?to?rad
????????}

?????????public?void?computeDistance（）
????????{
????????????double.TryParse（lattbA.Text.ToString（）.Trim（）out?latA）;
????????????double.TryParse（lattbB.Text.ToString（）.Trim（）?out?latB）;
????????????double.TryParse（lontbA.Text.ToString（）.Trim（）?out?lonA）;
????????????double.TryParse（lontbB.Text.ToString（）.Trim（）?out?lonB）;
????????????double?r_latA?=?rad（latA）;
????????????double?r_latB?=?rad（latB）;
????????????double?r_lonA?=?rad（lonA）;
????????????double?r_lonB?=?rad（lonB）;
????????????double?lat_diff?=?r_latA?-?r_latB;
????????????double?lon_diff?=?r_lonA?-?r_lonB;
????????????double?s?=?2?*?Math.Asin（Math.Sqrt（Math.Pow（Math.Sin（lat_diff?/?2）?2）?+?Math.Cos（r_latA）?*?Math.Cos（r_latB）?*?Math.Pow（Math.Sin（lon_diff?/?2）?2）））;
????????????s?=?s?*?6378137.0;
????????????s?=?Math.Round（s?*?10000d）?/?10000d;
????????????distb.Text?=?s.ToString（）;
????????}

????????private?void?lattbA_TextChanged（object?sender?EventArgs?e）
????????{
????????????computeDistance（）;
????????}

????????private?void?lontbA_TextChanged（object?sender?EventArgs?e）
????????{
????????????computeDistance（）;
????????}

????????private?void?lattbB_TextChanged（object?sender?EventArgs?e）
????????{
????????????computeDistance（）;
????????}

????????private?void?lontbB_TextChanged（object?sender?EventArgs?e）
????????{
????????????computeDistance（）;
????????}


????????public?void?convertDM2D_lat（）
????????{
????????????string[]?lats?=?new?string[2];
????????????lats?=?latmtb.Text.ToString（）.Trim（）.Split（‘:‘）;
????????????double?degree;
????????????double?minute;
????????????double.TryParse（lats[0]?out?degree）;
????????????double.TryParse（lats[1]?out?minute）;?
????????????degree?=?degree?+?minute?/?60.0;
????????????latcvttb.Text?=?degree.ToString（）;
????????}

????????public?void?convertDM2D_lon（）
????????{
????????????string[]?lons?=?new?string[2];
????????????lons?=?lonmtb.Text.ToString（）.Trim（）.Split（‘:‘）;
????????????double?degree;
????????????double?minute;
????????????double.TryParse（lons[0]?out?degree）;
????????????double.TryParse（lons[1]?out?minute）;
????????????degree?=?degree?+?minute?/?60.0;
????????????loncvttb.Text?=?degree.ToString（）;
????????}


????????public?void?convertDMS2D_lat（）
????????{
????????????string[]?lats?=?new?string[3];
????????????lats?=?latdmsmtb.Text.ToString（）.Trim（）.Split（‘:‘）;
????????

?屬性????????????大小?????日期????時(shí)間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2018-07-24?10:02??latlon_dis\
?????目錄???????????0??2018-07-24?10:02??latlon_dis\.vs\
?????目錄???????????0??2018-07-24?10:02??latlon_dis\.vs\latlon_dis\
?????目錄???????????0??2018-07-24?10:02??latlon_dis\.vs\latlon_dis\v15\
?????文件???????58880??2018-07-19?18:34??latlon_dis\.vs\latlon_dis\v15\.suo
?????目錄???????????0??2018-07-24?10:02??latlon_dis\.vs\latlon_dis\v15\Server\
?????目錄???????????0??2018-07-24?10:02??latlon_dis\.vs\latlon_dis\v15\Server\sqlite3\
?????文件???????????0??2018-06-12?15:46??latlon_dis\.vs\latlon_dis\v15\Server\sqlite3\db.lock
?????文件??????577536??2018-07-19?18:34??latlon_dis\.vs\latlon_dis\v15\Server\sqlite3\storage.ide
?????目錄???????????0??2018-07-24?10:02??latlon_dis\latlon_dis\
?????目錄???????????0??2018-07-24?10:02??latlon_dis\latlon_dis\bin\
?????目錄???????????0??2018-07-24?10:02??latlon_dis\latlon_dis\bin\Debug\
?????文件???????16896??2018-07-10?10:30??latlon_dis\latlon_dis\bin\Debug\latlon_dis.exe
?????文件???????28160??2018-07-10?10:30??latlon_dis\latlon_dis\bin\Debug\latlon_dis.pdb
?????文件????????4401??2018-06-13?11:03??latlon_dis\latlon_dis\Form1.cs
?????文件???????23735??2018-06-13?10:58??latlon_dis\latlon_dis\Form1.Designer.cs
?????文件????????5817??2018-06-13?10:58??latlon_dis\latlon_dis\Form1.resx
?????文件????????3383??2018-06-12?15:56??latlon_dis\latlon_dis\latlon_dis.csproj
?????目錄???????????0??2018-07-24?10:02??latlon_dis\latlon_dis\obj\
?????目錄???????????0??2018-07-24?10:02??latlon_dis\latlon_dis\obj\Debug\
?????文件????????1452??2018-06-13?08:52??latlon_dis\latlon_dis\obj\Debug\DesignTimeResolveAssemblyReferences.cache
?????文件????????6839??2018-06-12?15:46??latlon_dis\latlon_dis\obj\Debug\DesignTimeResolveAssemblyReferencesInput.cache
?????文件??????????42??2018-06-12?15:46??latlon_dis\latlon_dis\obj\Debug\latlon_dis.csproj.CoreCompileInputs.cache
?????文件?????????683??2018-06-12?15:56??latlon_dis\latlon_dis\obj\Debug\latlon_dis.csproj.FileListAbsolute.txt
?????文件????????1012??2018-06-13?10:58??latlon_dis\latlon_dis\obj\Debug\latlon_dis.csproj.GenerateResource.Cache
?????文件????????2210??2018-06-12?15:56??latlon_dis\latlon_dis\obj\Debug\latlon_dis.csprojResolveAssemblyReference.cache
?????文件???????16896??2018-07-10?10:30??latlon_dis\latlon_dis\obj\Debug\latlon_dis.exe
?????文件?????????180??2018-06-13?10:58??latlon_dis\latlon_dis\obj\Debug\latlon_dis.Form1.resources
?????文件???????28160??2018-07-10?10:30??latlon_dis\latlon_dis\obj\Debug\latlon_dis.pdb
?????文件?????????180??2018-06-12?15:56??latlon_dis\latlon_dis\obj\Debug\latlon_dis.Properties.Resources.resources
?????目錄???????????0??2018-06-12?15:46??latlon_dis\latlon_dis\obj\Debug\TempPE\
............此處省略9個(gè)文件信息