我在我的应用程序中使用geomap-linechart api。我想查看下拉选择的索引更改事件上的地图和图表。如果我把它放到更新面板里就不能用了..它就变成空白了..但是,如果我将控件放在更新面板之外,它就可以正常工作。这个问题有什么原因或建议吗?不能使用geomap inside更新面板吗??
这是我的代码..
<script src="Scripts/jquery-1.3.2.min.js" type="text/javascript"></script>
<script type='text/javascript' src='http://www.google.com/jsapi'></script>
<script src='http://maps.google.com/maps?file=api&v=2&key=ABCDEFG' type='text/javascript'></script>
<script type='text/javascript'>
google.load('visualization', '1', { 'packages': ['geomap'], 'language': 'fr'});
var countryCode;// map函数
function DrawWorldMap(country, lat, lang, name, count, usercount, user, bandwidth, vtitle, htitle, title1, title2) {
try {
var data = new google.visualization.DataTable();
data.addRows(count);
data.addColumn('string', 'Country');
data.addColumn('number', 'BandWidth');
var contry = country.split(',');
var band = bandwidth.split(',');
for (var i = 0; i < count; i++) {
data.setValue(i, 0, contry[i]);
}
for (var h = 0; h < count; h++) {
data.setValue(h, 1, Number(band[h]));
}
var options = {};
options['dataMode'] = 'regions';
var container = document.getElementById('<%=map_canvas.ClientID%>');
var geomap = new google.visualization.GeoMap(container);
geomap.draw(data, options);
var lati = lat;
var langi = lang;
var loop = count;
google.visualization.events.addListener(
geomap, 'regionClick', function (e) {
countryCode = e['region'];
CreateCountryMap(lati, langi, name, loop, usercount, country, user, bandwidth, vtitle, htitle, title1, title2);
});
}
catch (exception) {
alert('drawworldmap: ' + exception);
}
drawVisualization(user, bandwidth, usercount, vtitle, htitle, title1, title2); // here am calling the chart function..
}//图表函数
function drawVisualization(User, Bandwidth, counts, vtitle, htitle, title1, title2) {
try {
// Create and populate the data table.
var data = new google.visualization.DataTable();
data.addColumn('string', title1);
data.addColumn('number', title2);
var username = User.split(',');
var BandWidth = Bandwidth.split(',');
for (var i = 0; i < counts; i++) {
data.addRow([String(username[i]), Number(BandWidth[i])]);
}
// Create and draw the visualization.
new google.visualization.LineChart(document.getElementById('<%=visualization.ClientID%>')).
draw(data, { curveType: "function", pointSize: 5, title: 'User Chart', titlePosition: 'out',
width: 400, height: 350, backgroundColor: 'AliceBlue',
vAxis: { maxValue: 100, title: vtitle }, fontSize: 8, hAxis: { title: htitle }
}
);
}
catch (exception) {
alert(exception);
}
}
<asp:UpdatePanel ID="UpdatePanel1" runat="server">
<ContentTemplate>
<asp:DropDownList ID="ddlusername" runat="server" AutoPostBack="true"
OnSelectedIndexChanged="ddlusername_SelectedIndexChanged" Height="17px"
Width="132px"> </asp:DropDownList>
<div id="visualization" align="center" style="border: thin solid grey;" runat="server"> </div>
<div id='map_canvas' style="border: thin solid grey;" align="center" runat="server"> </div>
<asp:Label ID="lblmap" runat="server"></asp:Label>
</ContentTemplate>
</asp:UpdatePanel>我在后面的代码中调用了drawworldmap函数,如下所示。
ScriptManager.RegisterStartupScript(lblmap, this.GetType(), "js2", "google.setOnLoadCallback(DrawWorldMap('" + contry + "','" + city + "','" + langitude + "','" + longitude + "'," + count + "," + usercount + ",'" + username + "','" + bandwidth + "','Bandwidth','UserName','User','BandWidth'));", true);如果你有任何想法,请帮助..
谢谢。。
发布于 2011-02-16 17:39:35
第一个解决方案是再次调用加载谷歌地图的函数,就像javascript中的initMap()函数一样。第二种解决方案是从map创建iframe页面,并在单击map的div时加载它。
你的问题是在更新面板,它不能正确加载。
so.When你再次点击地图的div,通过第一个解决方案加载地图。否则,可以通过加载iframe来使用第二个解决方案。
我已经在我的项目中做了这两件事。
希望这能对你有所帮助。
发布于 2011-02-17 18:47:12
<script type="text/javascript">
function ActiveTabChanged(sender, e) {
if (sender.get_activeTab().get_headerText().toLowerCase().indexOf('contact') > -1) {
var FrameSrc = ('<%=SetFrameSrc() %>');
document.getElementById('<%=ifrmMap.ClientID %>').src = FrameSrc;
}
}
</script>
<iframe id="ifrmMap" runat="server" height="324px" width="462px" frameborder="0" scrolling="no" marginwidth="0" marginheight="0"></iframe>在Code Behind
/// <summary>
/// Get the iframe source when contact tab active.
/// </summary>
/// <returns></returns>
public string SetFrameSrc()
{
string strSrc = string.Empty;
if (!string.IsNullOrEmpty(queryID))
{
strSrc = //Add Google Map New page url;
}
return strSrc;
}当您从下拉菜单中选择map时,在选定的indexchanged上调用此javascript函数。把iframe放在你现在放在map的div的地方。并将地图功能放到新页面上。在这个iframe.and最后一个函数中加载的是代码隐藏函数,在这个函数中,您必须设置您已经在其中编写地图代码的新页面。
https://stackoverflow.com/questions/5013223
复制相似问题