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问题:

I'd like to use jQuery UI's dialog to implement a confirm dialog which is shown when the user clicks a delete-link (implemented using an asp:LinkButton).
I'm using code as shown below (copied from the jquery ui documentation):

<!-- the delete link -->
<asp:LinkButton ID="btnDelete" runat="server" Text="Delete"
  OnClick="btnDelete_Click" CssClass="btnDelete"></asp:LinkButton>

<!-- the confirm-dialog -->
<div id="dialog-confirm-delete" title="Delete?" style="display:none;">
  <p>Are you sure you want to permanently deleted the selected items?</p>
</div>

<script>
$(document).ready(function () {
    // setup the dialog
    $('#dialog-confirm-delete').dialog({
        autoOpen: false,
        modal: true,
        buttons: {
          "Delete all items": function () {
                 $(this).dialog("close");
                 // ===>>> how to invoke the default action here
              },
          Cancel: function () { $(this).dialog("close"); }
        }
    });

    // display the dialog
    $('.btnDelete').click(function () {
        $('#dialog-confirm-cancel').dialog('open');
        // return false to prevent the default action (postback)
        return false;
    });

});
</script>

So in the click event handler, I have to prevent the default action of the LinkButton (the postback) and instead display the dialog.

My question is: how can I then invoke the default action (the postback) of the delete link to perform the postback in case the user clicked the "Delete all items" button in the dialog?

回答1:

OK, here's my approach (it works, but it might not be the best solution):

$(document).ready(function () {
  $('#dialog-confirm-cancel').dialog({
    autoOpen: false,
    modal: true,
    buttons: {
      "Delete all items": function () {
        // invoke the href (postback) of the linkbutton,
        // that triggered the confirm-dialog
        eval($(this).dialog('option', 'onOk'));
        $(this).dialog("close");
      },
      Cancel: function () { $(this).dialog("close"); }
    }
  });

  $('.btnDelete').click(function () {
    $('#dialog-confirm-delete')
      // pass the value of the LinkButton's href to the dialog
      .dialog('option', 'onOk', $(this).attr('href'))
      .dialog('open');
    // prevent the default action, e.g., following a link
    return false;
  });
});

回答2:

If you're not doing anything more than confirming you can add an attribute to the button.

<asp:LinkButton ID="btnDelete" runat="server" Text="Delete"
  OnClientClick="if(!confirm('Are you sure?'))return false;" CssClass="btnDelete"></asp:LinkButton>

回答3:

If you look at the Project Awesome on Codeplex it has a generic implementation of a Confirm Dialog that you can inspect for your scope.

回答4:

So you prevented the default action of the link(following the link), right? So adding location.replace('path/to/file'); after $(this).dialog('close'); would solve your problem.

Not sure I understood your question right though.

回答5:

Try adding $("#yourformid").submit(); at this spot // ===>>> how to invoke the default action here. According to the docs: "... the default submit action on the form will be fired, so the form will be submitted."

Edit
You can try to do something like this:

$('.btnDelete').click(function (event, confirmed) {
    if (confirmed) {
        return true;
    } else {
        $('#dialog-confirm-cancel').dialog('open');
        // prevent the default action, e.g., following a link
        return false;
    }
});

And then in your delete all items function:

"Delete all items": function () {
    $(this).dialog("close");
    $('.btnDelete').trigger("click", [true]);
},

回答6:

$('#dialog-confirm-delete').dialog({
   autoOpen: false,
   modal: true,
   buttons: {
       Cancel: function() {
           $(this).dialog("close");
       },
       "Delete all items": function() {
           $(this).dialog("close");
           // ===>>> how to invoke the default action here
       }
   }
});