Creating a clickable map

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• Creating a clickable Map

Creating a clickable Map

1. Insert a picturebox when using win forms or an <asp: imagebutton> for ASP. NET web forms.
2. Set the image to your map-instance. ex.: myimage. Image = mymap. getmap ();
3. Set up a click-event for your picturebox/imagebutton.
4. Create a click-event handler, similar to the one below.

protected void imgMap_Click(object sender, ImageClickEventArgs e)

{     //Center the map on the click-point

    myMap.Center = myMap.ImageToWorld(new System.Drawing.PointF(e.X, e.Y), myMap); 

    //Zoom in 2x

    myMap.Zoom *= 0.5;

    //Call function that renders the map and returns it to the client

    myImage.Image = myMap.GetMap();}

Note: When Using ASP. net, you need to store the zoom and center values between requests. this can be done using either viewstate or session variables. these shoshould be restored on a PostBack, and stored when they are changed.