AjaxControl、AjaxScripts载入地图时显示Loading图片（转）

关键：充分利用好地图控件提供的事件。选择好触发、结束事件，避免与其他操作冲突！

 

AjaxControl

 

//Default.aspx.cs

protected void MapControl1_Load(object sender, EventArgs e)
    {
        MapControl1.AttachClientEvent("onchangeview", "startLoading");
        MapControl1.AttachClientEvent("onimagesload", "stopLoading");
    }

//Default.aspx.cs protected void MapControl1_Load(object sender, EventArgs e) { MapControl1.AttachClientEvent("onchangeview", "startLoading"); MapControl1.AttachClientEvent("onimagesload", "stopLoading"); }  

 

 

 

//Default.aspx

Info:<input id="Text1" type="text" />

function startLoading()
{
     $("Text1").value = "Loading...";
}

function stopLoading()
{
     $("Text1").value = "Completed.";
}

//Default.aspx Info:<input id="Text1" type="text" /> function startLoading() { $("Text1").value = "Loading..."; } function stopLoading() { $("Text1").value = "Completed."; }

 

 

AjaxScripts

 

map.Init();
map.AttachEvent("onchangeview", startLoading);
map.AttachEvent("onimagesload", stopLoading);

function startLoading(e)
{
//...
}

map.Init(); map.AttachEvent("onchangeview", startLoading); map.AttachEvent("onimagesload", stopLoading); function startLoading(e) { //... }

 

 

PS：以上Demo中未用Ajax载入图片，仅在Text中动态显示了文本信息。具体实现：仅需在一个DIV中放入一个图片，动态控制DIV的显示和隐藏即可。