New ImageMap control in ASP.NET 2.0

Here’s a cool new control in ASP.NET 2.0, the ImageMap.  You use it like this:

      <asp:imagemap id=”Shop”

        imageurl=”Images/ShopChoice.jpg”

        width=”150″

        height=”360″

        alternatetext=”Shopping choices”

        runat=”Server”>    

        <asp:circlehotspot

          navigateurl=”http://www.tailspintoys.com”

          x=”75″

          y=”290″

          radius=”75″

          hotspotmode=”Navigate”

          alternatetext=”Shop for toys”>

        </asp:circlehotspot> 
        <asp:circlehotspot

          navigateurl=”http://www.cohowinery.com”

          x=”75″

          y=”120″

          radius=”75″

          hotspotmode=”Navigate”

          alternatetext=”Shop for wine”>

        </asp:circlehotspot>     
      </asp:imagemap>

And the code-behind looks like this:

  void VoteMap_Clicked (Object sender, ImageMapEventArgs e)

  {

    string coordinates;

    string hotSpotType;

    int yescount = ((ViewState["yescount"] != null)? (int)ViewState["yescount"] : 0);

    int nocount = ((ViewState["yescount"] != null)? (int)ViewState["nocount"] : 0);

    // When a user clicks the “Yes” hot spot,

    // display the hot spot’s name and coordinates.

    if (e.PostBackValue.Contains(“Yes”))

    {

      yescount += 1;

      coordinates = Vote.HotSpots[0].GetCoordinates();

      hotSpotType = Vote.HotSpots[0].ToString ();

      Message1.Text = “You selected ” + hotSpotType + ” ” + e.PostBackValue + “.<br>” +

                      “The coordinates are ” + coordinates + “.<br>” +

                      “The current vote count is ” + yescount.ToString() +

            ” yes votes and ” + nocount.ToString() + ” no votes.”;

    }
    // When a user clicks the “No” hot spot,

    // display the hot spot’s name and coordinates.

    else if (e.PostBackValue.Contains(“No”))

    {

      nocount += 1;

      coordinates = Vote.HotSpots[1].GetCoordinates();

      hotSpotType = Vote.HotSpots[1].ToString ();

      Message1.Text = “You selected ” + hotSpotType + ” ” + e.PostBackValue + “.<br>” +

                      “The coordinates are ” + coordinates + “.<br>” +

            “The current vote count is ” + yescount.ToString() +

            ” yes votes and ” + nocount.ToString() + ” no votes.”;

    }
    else

    {

      Message1.Text = “You did not click a valid hot spot region.”;

    }
    ViewState["yescount"] = yescount;

    ViewState["nocount"] = nocount;

  }