Question

I’m trying to use a simple jquery-ui modal dialog as a delete confirmation in an ASP.NET C# application. I’ve done this many times before, but for some reason in this application it is misbehaving. I see the dialog pop up then it immediately disappears before I can click on either “Yes” or “No”. Here’s the relevant code (Javascript):

    <script type="text/javascript" src="/resources/jquery-1.8.2.min.js"></script>
    <script type="text/javascript" src="/resources/jquery-ui-1.9.1.custom.min.js"></script>

    <link rel="stylesheet" type="text/css" href="/resources/ui-lightness/jquery-ui-1.9.1.custom.css" />

    <script type="text/javascript">
        var remConfirmed = false;
        function ConfirmRemoveDialog(obj, title, dialogText) {
            if (!remConfirmed) {
                //add the dialog div to the page
                $('body').append(String.Format("<div id='confirmRemoveDialog' title='{0}'><p>{1}</p></div>", title, dialogText));
                //create the dialog
                $('#confirmRemoveDialog').dialog({
                    modal: true,
                    resizable: false,
                    draggable: false,
                    close: function(event, ui) {
                        $('body').find('#confirmRemoveDialog').remove();
                    },
                    buttons:
                    {
                        'Yes, remove it': function() {
                            $(this).dialog('close');
                            remConfirmed = true;
                            if (obj) obj.click();
                        },
                        'No, keep it': function() {
                            $(this).dialog('close');
                        }
                    }
                });
            }

            return remConfirmed;
        }

        //String.Format function (since Javascript doesn't have one built-in
        String.Format = function() {
            var s = arguments[0];
            for (var i = 0; i < arguments.length - 1; i++) {
                var reg = new RegExp("\\{" + i + "\\}", "gm");
                s = s.replace(reg, arguments[i + 1]);
            }
            return s;
        }
    </script>

Here’s where I’m using the confirmation function (in the OnClientClick of an <asp:Button> control):

    <asp:Button ID="btnRemoveProgram" runat="server" Text="Remove" CausesValidation="false" OnClientClick="ConfirmRemoveDialog(this, 'Please confirm removal', 'Are you sure you wish to remove the selected Program? This cannot be undone.');" />

As I said, I’ve successfully used this same construct (nearly identical code) many times before; I don’t know why it isn’t working now. Any ideas will be greatly appreciated, I’m truly stumped on this one.

Answer 1

You need to return the remConfirmed to the caller which is the button itself. On your button, do this:

OnClientClick="return ConfirmRemoveDialog(/* the rest of the code */);"