我做出了 Mikey 建议不要使用 Session 的更改,但我的地图上仍然没有任何内容
我正在向我的asp页面传递一个谷歌地图的经度列表,如下所示:
public List<string> GetLatLonList()
{
var list = new List<string>();
list.Add("43.169582 , -76.823404");
list.Add("43.169133 , -76.822956");
list.Add("43.169115 , -76.821818");
list.Add("43.169151 , -76.820488");
list.Add("43.170049 , -76.820424");
return string.Join(";", list.ToArray());
}
这是我的 asp.net 页面:
<%@ Page Title="" Language="C#" MasterPageFile="~/MasterPage.master" AutoEventWireup="true" CodeFile="MultipleMarker.aspx.cs" Inherits="MultipleMarker" %>
<asp:Content ID="Content1" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server">
<script type="text/javascript" src="http://maps.googleapis.com/maps/api/js?sensor=false"></script>
<script type ="text/javascript">
var map; var infowindow;
var latlons = 'System.Collections.Generic.List`1[System.String]';
function InitializeMap() {
var latlng = new google.maps.LatLng(latlons[0]);
console.log("latlng:" + latlng);
var myOptions =
{
zoom: 8,
center: latlng,
mapTypeId: google.maps.MapTypeId.ROADMAP
};
map = new google.maps.Map(document.getElementById("map"), myOptions);
}
function markicons() {
InitializeMap();
var ltlng = [];
// ltlng.push(new google.maps.LatLng(17.22, 78.28));
// ltlng.push(new google.maps.LatLng(13.5, 79.2));
// ltlng.push(new google.maps.LatLng(15.24, 77.16));
var length = latlons.length;
for (var i = 0; i < length; i++) {
console.log(latlons[i]);
ltlng.push(new google.maps.LatLng(latlons[i]));
}
map.setCenter(ltlng[0]);
for (var i = 0; i <= ltlng.length; i++) {
marker = new google.maps.Marker({
map: map,
position: ltlng[i]
});
(function (i, marker) {
google.maps.event.addListener(marker, 'click', function () {
if (!infowindow) {
infowindow = new google.maps.InfoWindow();
}
infowindow.setContent("Message" + i);
infowindow.open(map, marker);
});
})(i, marker);
}
}
window.onload = markicons;
</script>
<h2>Multiple Markers Demo:</h2>
<div id ="map"
style="width: 80%; top: 51px; left: 32px; position: absolute; height: 80%">
</div>
</asp:Content>
屏幕上没有内容。它提出了一张空白地图。我没有收到任何 javascript 错误,所以我不确定它为什么不起作用。
这是我第一次尝试 javascript。任何人都知道为什么我有问题?
编辑#2 回应 Mikey
这是运行时页面的来源:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head><title>
</title></head>
<body>
<form method="post" action="MultipleMarker.aspx" id="form1">
<div class="aspNetHidden">
<input type="hidden" name="__VIEWSTATE" id="__VIEWSTATE" value="/wEPDwULLTEwMDUyNjYzMjhkZOATrmZzTn3jrg2qYoyIsT7K8EJcig29Z1QzbaXOQK0d" />
</div>
<div>
<script type="text/javascript" src="http://maps.googleapis.com/maps/api/js?sensor=false"></script>
<script type ="text/javascript">
var map; var infowindow;
var latlons = 'System.Collections.Generic.List`1[System.String]';
function InitializeMap() {
var latlng = new google.maps.LatLng(latlons[0]);
console.log("latlng:" + latlng);
var myOptions =
{
zoom: 8,
center: latlng,
mapTypeId: google.maps.MapTypeId.ROADMAP
};
map = new google.maps.Map(document.getElementById("map"), myOptions);
}
function markicons() {
InitializeMap();
var ltlng = [];
// ltlng.push(new google.maps.LatLng(17.22, 78.28));
// ltlng.push(new google.maps.LatLng(13.5, 79.2));
// ltlng.push(new google.maps.LatLng(15.24, 77.16));
var length = latlons.length;
for (var i = 0; i < length; i++) {
console.log(latlons[i]);
ltlng.push(new google.maps.LatLng(latlons[i]));
}
map.setCenter(ltlng[0]);
for (var i = 0; i <= ltlng.length; i++) {
marker = new google.maps.Marker({
map: map,
position: ltlng[i]
});
(function (i, marker) {
google.maps.event.addListener(marker, 'click', function () {
if (!infowindow) {
infowindow = new google.maps.InfoWindow();
}
infowindow.setContent("Message" + i);
infowindow.open(map, marker);
});
})(i, marker);
}
}
window.onload = markicons;
</script>
<h2>Multiple Markers Demo:</h2>
<div id ="map"
style="width: 80%; top: 51px; left: 32px; position: absolute; height: 80%">
</div>
</div>
</form>
</body>
</html>