使用c＃停止google.maps.event.addDomListener [英] stop google.maps.event.addDomListener using c#

问题描述

我有一个页面，我从数据库中获取用户值并在页面上显示。我在同一页面中有一个谷歌地图，根据我提取的数据显示用户位置。现在这个地图在我的窗口加载时启动，当我有结果值时，一切正常。但是，如果我没有值，地图正在加载并给我地理编码错误。我很简单，当我没有结果时，地图不应该加载。如何使用C＃代码停止它。

I have one page in which i am fetching user values from database and show on page. I have one google map in the same page which is showing user location according to data i am fetching. Now this map is launch every time when my window loads and when i have result value then everything is working fine. But if i have no values still the map is loading and gives me geocode error. I simple want when i have no result then the map should not load. How to stop it by using C# code.

google.maps.event.addDomListener(window, 'load', first);
function first() 
        {
            if (lat == "" || lon == "") {
                InitializeMap2();
            }
}
function GoogleGeocode() {
            geocoder = new google.maps.Geocoder();
            this.geocode = function (address, callbackFunction) {
                geocoder.geocode({ 'address': address }, function (results, status) {
                    if (status == google.maps.GeocoderStatus.OK) {
                        var result = {};
                        result.latitude = results[0].geometry.location.lat();
                        result.longitude = results[0].geometry.location.lng();
                        callbackFunction(result);
                    } else {
                        alert("Geocode was not successful for the following reason: " + status);
                        callbackFunction(null);
                    }
                });
            };
        }
 function InitializeMap2() {
            var g = new GoogleGeocode();
            var address = pincode;
            g.geocode(address, function(data) {
// i am not writing the whole function.
});
        }

while (reader.Read())
            {
                found = true; 
                lbl_iam.Text = reader["iamdetail"].ToString();
                lbl_adid.Text = reader["ad_id"].ToString();
lat = reader["latitude"].ToString();
                lon = reader["longitude"].ToString();
}
if (!found)
            {
                //here i want to code to stop google map load
            }

推荐答案

我这样做了我的地图，以避免在所选字段中没有结果/没有条目的情况下显示错误代码。但是如果没有填充字段的搜索结果，我觉得你应该至少向用户显示地图没有填充的原因。

I did my maps like this to avoid the error code displaying if there is no results/ no entry made in the selected fields. But if there is no result from a search with the fields populated I feel you should at least show the users why the map did not populate.

function codeAddress(mapdir) {
            address = document.getElementById("LocAddress1").value + " " + document.getElementById("LocAddress2").value + " " + document.getElementById("LocTown").value;
            if (geocoder != null) {
                if (address != "   ") {

                    if (mapdir != "   ") {
                        address = mapdir;
                        geocoder.geocode({ 'address': address }, function (results, status) {
                            marker.setMap(null);
                            if (status == google.maps.GeocoderStatus.OK) {
                                document.getElementById("lblGeoLocation").innerHTML = results[0].geometry.location;
                                document.getElementById("StaticMap").value = results[0].geometry.location;
                                map.setCenter(results[0].geometry.location);
                                marker = new google.maps.Marker({
                                    map: map,
                                    position: results[0].geometry.location
                                });
                            } else {
                                if (status == "ZERO_RESULTS") {
                                    alert('Geocode was not successful for the following reason: ' + status);
                                }
                                else {

                                    
                                }
                            }
                        });

                    }

希望这会有所帮助。



如果这不能解决问题，请告诉我，以便我可以将其删除作为答案。

Hope this helps.

If this does not solve the problem please lect me know so that I can remove this as an answer.

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