1.自己创建对Google Maps API的请求

您只需将HTTP请求发送到Google Maps API，然后使用结果即可。 您可以使用WebRequest伪造对google api的请求。 您需要Maps API密钥 。

你必须建立GET参数，例如。 origin=...&destination=...&key=YOUR_API_KEY +解析JSON响应以对其执行某些操作。

Google Maps Api文档 （在Web服务API下）列出了请求参数和示例响应。

 string url = @"https://maps.googleapis.com/maps/api/directions/json?origin=75+9th+Ave+New+York,+NY&destination=MetLife+Stadium+1+MetLife+Stadium+Dr+East+Rutherford,+NJ+07073&key=YOUR_API_KEY"; WebRequest request = WebRequest.Create(url); WebResponse response = request.GetResponse(); Stream data = response.GetResponseStream(); StreamReader reader = new StreamReader(data); // json-formatted string from maps api string responseFromServer = reader.ReadToEnd(); response.Close(); 

JSON响应看起来像这样（来自Directions API ）

 { "geocoded_waypoints" : [ { "geocoder_status" : "OK", "place_id" : "ChIJRVY_etDX3IARGYLVpoq7f68", "types" : [ "bus_station", "transit_station", "point_of_interest", "establishment" ] }, { "geocoder_status" : "OK", "partial_match" : true, "place_id" : "ChIJp2Mn4E2-woARQS2FILlxUzk", "types" : [ "route" ] } ], "routes" : [ { "bounds" : { "northeast" : { "lat" : 34.1330949, "lng" : -117.9143879 }, "southwest" : { "lat" : 33.8068768, "lng" : -118.3527671 } }, "copyrights" : "Map data ©2016 Google", "legs" : [ { "distance" : { "text" : "35.9 mi", "value" : 57824 }, "duration" : { "text" : "51 mins", "value" : 3062 }, "end_address" : "Universal Studios Blvd, Los Angeles, CA 90068, USA", "end_location" : { "lat" : 34.1330949, "lng" : -118.3524442 }, "start_address" : "Disneyland (Harbor Blvd.), S Harbor Blvd, Anaheim, CA 92802, USA", "start_location" : { "lat" : 33.8098177, "lng" : -117.9154353 }, ... Additional results truncated in this example[] ... "overview_polyline" : { "points" : "knjmEnjunUbKCfEA?_@]@kMBeE@qIIoF@wH@eFFk@WOUI_@?u@j@k@`@EXLTZHh@Y`AgApAaCrCUd@cDpDuAtAoApA{YlZiBdBaIhGkFrDeCtBuFxFmIdJmOjPaChDeBlDiAdD}ApGcDxU}@hEmAxD}[tt@yNb\yBdEqFnJqB~DeFxMgK~VsMr[uKzVoCxEsEtG}BzCkHhKWh@]t@{AxEcClLkCjLi@`CwBfHaEzJuBdEyEhIaBnCiF|K_Oz\ {MdZwAbDaKbUiB|CgCnDkDbEiE|FqBlDsLdXqQra@kX|m@aF|KcHtLm@pAaE~JcTxh@w\`v@gQv`@}F`MqK`PeGzIyGfJiG~GeLhLgIpIcE~FsDrHcFfLqDzH{CxEwAbBgC|B}F|DiQzKsbBdeA{k@~\oc@bWoKjGaEzCoEzEwDxFsUh^wJfOySx[uBnCgCbCoFlDmDvAiCr@eRzDuNxC_EvAiFpCaC|AqGpEwHzFoQnQoTrTqBlCyDnGmCfEmDpDyGzGsIzHuZzYwBpBsC`CqBlAsBbAqCxAoBrAqDdDcNfMgHbHiPtReBtCkD|GqAhBwBzBsG~FoAhAaCbDeBvD_BlEyM``@uBvKiA~DmAlCkA|B}@lBcChHoJnXcB`GoAnIS~CIjFDd]A|QMlD{@jH[vAk@`CoGxRgPzf@aBbHoB~HeMx^eDtJ}BnG{DhJU`@mBzCoCjDaAx@mAnAgCnBmAp@uAj@{Cr@wBPkB@kBSsEW{GV}BEeCWyAWwHs@qH? cIHkDXuDn@mCt@mE`BsH|CyAp@}AdAaAtAy@lBg@pCa@jE]fEcBhRq@pJKlCk@hLFrB@lD_@xCeA`DoBxDaHvM_FzImDzFeCpDeC|CkExDiJrHcBtAkDpDwObVuCpFeCdHoIl\uBjIuClJsEvMyDbMqAhEoDlJ{C|J}FlZuBfLyDlXwB~QkArG_AnDiAxC{G|OgEdLaE`LkBbEwG~KgHnLoEjGgDxCaC`BuJdFkFtCgCnBuClD_HdMqEzHcBpB_C|BuEzCmPlIuE|B_EtDeBhCgAdCw@rCi@|DSfECrCAdCS~Di@jDYhA_AlC{AxCcL`U{GvM_DjFkBzBsB`BqDhBaEfAsTvEmEr@iCr@qDrAiFnCcEzCaE~D_@JmFdGQDwBvCeErEoD|BcFjC}DbEuD~D`@Zr@h@?d@Wr@}@vAgCbEaHfMqA`Cy@dAg@bAO`@gCi@w@W" }, "summary" : "I-5 N and US-101 N", "warnings" : [], "waypoint_order" : [] } ], "status" : "OK" } 

2. …或使用专用库

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