Calling SQL to create XML from Javascript (Google Maps)

[jobo]

I'm sure there's some way to do this simply but I'm new to
Javascript.

So I'm creating an application that interacts with google maps and
everytime the user pans around the map I want it to send its
coordinates back to the server to generate an XML object with a bunch
of markers that google maps will plot back onto the map.

The problem is that I have no idea how to query SQL to create this XML
object from javascript. I have already created an event listener that
will trigger at the correct times, but what to do after that I don't
know. I already know how to generate an XML object after I've hit the
database but have no idea how to return it from my .aspx.cs back to
the javascript to be processed.

Does anyone know how do to this?

Here's the javascript method I have:

GEvent.addListener(oMap, "moveend", function() {
var latLngStrs = oMap.getBounds().getSouthWest();
var latLngStrs2 = oMap.getBounds().getNorthEastt();

\\Need to send these bounds back to a method in the code-
behind
\\that will query the database and then return an XML
object to be processed further

});

Thanks a lot!

[bruce barker]

you can use the ajax extensions for this, or even the 2.0 builtin server
callback.

-- bruce (sqlwork.com)

jobo wrote:

I'm sure there's some way to do this simply but I'm new to
Javascript.

So I'm creating an application that interacts with google maps and
everytime the user pans around the map I want it to send its
coordinates back to the server to generate an XML object with a bunch
of markers that google maps will plot back onto the map.

The problem is that I have no idea how to query SQL to create this XML
object from javascript. I have already created an event listener that
will trigger at the correct times, but what to do after that I don't
know. I already know how to generate an XML object after I've hit the
database but have no idea how to return it from my .aspx.cs back to
the javascript to be processed.

Does anyone know how do to this?

Here's the javascript method I have:

GEvent.addListener(oMap, "moveend", function() {
var latLngStrs = oMap.getBounds().getSouthWest();
var latLngStrs2 = oMap.getBounds().getNorthEastt();

\\Need to send these bounds back to a method in the code-
behind
\\that will query the database and then return an XML
object to be processed further

});

Thanks a lot!

[jobo]

On Mar 21, 12:16 pm, bruce barker <[e-mail]:

you can use the ajax extensions for this, or even the 2.0 builtin server
callback.

-- bruce (sqlwork.com)

jobo wrote:

I'm sure there's some way to do this simply but I'm new to
Javascript.

So I'm creating an application that interacts with google maps and
everytime the user pans around the map I want it to send its
coordinates back to the server to generate an XML object with a bunch
of markers that google maps will plot back onto the map.

The problem is that I have no idea how to query SQL to create this XML
object from javascript. I have already created an event listener that
will trigger at the correct times, but what to do after that I don't
know. I already know how to generate an XML object after I've hit the
database but have no idea how to return it from my .aspx.cs back to
the javascript to be processed.

Does anyone know how do to this?

Here's the javascript method I have:

GEvent.addListener(oMap, "moveend", function() {
var latLngStrs = oMap.getBounds().getSouthWest();
var latLngStrs2 = oMap.getBounds().getNorthEastt();

\\Need to send these bounds back to a method in the code-
behind
\\that will query the database and then return an XML
object to be processed further

});

Thanks a lot!

Thanks for replying. How would I go about using an ajax extension or a
server callback? I'm using ASP.NET 2.0.