Web Forms :: Creating A Map - Unable To Capture The Coordinates By Clicking On The Map?

consider the following:


1- My web site has a map. The picture format of the map is jpeg.


2- Each user can add a node in the map by clicking on it.

3- After clicking the coordinates(X and Y) of clicked area is captured

4-Coordinates are saved in the data base

5- Whenever the page containing the map is loaded, for each coordinates stored in the database a small circle (ImageButton) will
be added to the map

I have two solutions for it:

1- Using a ImageButton as a map. I can capture the coordinates of the clicked area as follows:

protected void ImageButton1_Click(object sender,
ImageClickEventArgs e)[code]....

The problem of this solution is that the programmatically added nodes are not visible

2- As an alternative for ImageButton I can use a panel to display the map (BackImageUrl="~/Images/map.jpg").
after creating the btn programmatically I use the following code to add it to the panel:

Panel1.Controls.Add(btn);

Hear the problem is that I cannot capture the coordinates by clicking on the map.I need to enable the user to add the nodes to the map and view them in a single interface.