经纬度、时分秒转换的C#类
jopen
11年前
一：新建一个包含经纬度、时间转换的类optaDataConvert
public class optaDataConvert { /// <summary> /// 时间转换 /// </summary> /// <param name="value"></param> /// <returns></returns> public static DateTime GetDataTime(long value) { return new DateTime(1970, 1, 1).AddMilliseconds(value).AddHours(8); } /// <summary> /// 获取经度 /// </summary> /// <returns></returns> public static string GetLongitudeValue(decimal value) { ArrayList arrList = LgetValid(value); if (arrList == null) return string.Empty; if (arrList.Count != 3) return string.Empty; return string.Format("{0}°{1}.{2}' {3}", arrList[0], arrList[1], arrList[2], value > 0 ? "E" : "W"); } /// <summary> /// 获取纬度 /// </summary> /// <returns></returns> public static string GetLatitudeValue(decimal value) { ArrayList arrList = LgetValid(value); if (arrList == null) return string.Empty; if (arrList.Count != 3) return string.Empty; return string.Format("{0}°{1}.{2}' {3}", arrList[0], arrList[1], arrList[2], value > 0 ? "N" : "S"); } /// <summary> /// 获取经纬度度分秒 /// </summary> /// <param name="value"></param> /// <returns></returns> public static ArrayList LgetValid(decimal value) { ArrayList aList = new ArrayList(); string excute = ChangeValue(value); string[] sArray = excute.Split('|'); aList.Insert(0, sArray[0]); aList.Insert(1, sArray[1]); aList.Insert(2, sArray[2]); return aList; } /// <summary> /// 经纬度转换 /// </summary> /// <param name="str">经度</param> /// <param name="num">保留8位值</param> /// <returns></returns> protected static string ChangeValue(decimal degree) { if (degree < 0) { degree = -degree; } decimal minute = (degree - (int)degree) * 60; decimal second = (minute - (int)minute) * 60; return ((int)degree).ToString() + "|" + ((int)minute).ToString() + "|" + ((int)second).ToString(); } public static decimal TimeToValue(string Degrees, string Minutes, string Seconds) { decimal Value = decimal.Parse(Minutes) + decimal.Parse(Minutes) / 60 + decimal.Parse(Seconds) / 3600; return Value; } } }二：调用该函数
1.把时分秒转换成经纬度存储
m_cardpoint.X = optaDataConvert.TimeToValue(X_Du.Text, X_Fen.Text, X_Miao.Text); m_cardpoint.Y = optaDataConvert.TimeToValue(Y_Du.Text, Y_Fen.Text, Y_Miao.Text); （其中m_cardpoint.X 、m_cardpoint.Y 为存储经纬度的值）
2.把经纬度转换成时分秒展示在前台
ArrayList arrlistLatitude = optaDataConvert.LgetValid(m_cardpoint.Y); Y_Du.Text = arrlistLatitude[0].ToString(); Y_Fen.Text = arrlistLatitude[1].ToString(); Y_Miao.Text = arrlistLatitude[2].ToString();