Asp.net JQuery插件确认框不起作用

Question

I want to display a confirm dialog box on my asp.net website before the user upload the data.

I am using http://marcosesperon.es/apps/messi/ plugin for dialog box.

The dialog box appears on client click.

I want the server side code to be executed only when the user click Yes.

I am able to display the confirm box but my server side code is not executed.

Please help.

Client Code

var confirmed = false;

if (!confirmed) {
    new Messi('Do you want to update status ?.', {
        title: 'Confirm',
        buttons: [{ id: 0, label: 'Yes', val: 'Y' }, { id: 1, label: 'No', val: 'N' }],
        callback: function (val) {
           confirmed=val;
        }
    }
    );
}

return confirmed;

This is my code.

Server Code

<asp:Button ID="Button2" CssClass="myButton2" runat="server" OnClientClick="if( ! Button2Confirm()) return false;" Text="Update" Width="117px" OnClick="Button2_Click" />

Answer 1

Why do you use a jQuery Ajax call for this situation.

Please see this below example of a sample jQuery Ajax call

http://www.aspsnippets.com/Articles/Call-ASPNet-Page-Method-using-jQuery-AJAX-Example.aspx

var confirmed = false;

 if (!confirmed) {
new Messi('Do you want to update status ?.', {
    title: 'Confirm',
    buttons: [{ id: 0, label: 'Yes', val: 'Y' }, { id: 1, label: 'No', val: 'N' }],
    callback: function (val) {
      $.ajax({
      type: "POST",
      url: "Your_webpage.aspx/your_web_method",
      data: '{name: confirmed }',
      contentType: "application/json; charset=utf-8",
      dataType: "json",
      success: OnSuccess,
      failure: function(response) {
        alert(response.d);
         }
      });
     }
    }
   );
 }

 return confirmed;

:)

Answer 2

Your

return confirmed; 

is run before the button callback so this function will always return false. You must call your server side code in the callback function:

new Messi('Do you want to update status ?.', {
    title: 'Confirm',
    buttons: [{ id: 0, label: 'Yes', val: 'Y' }, { id: 1, label: 'No', val: 'N' }],
    callback: function (val) {
       if(val == 'Y')
          // call server side
    }
}
);

To call your button click you could use things like:

__doPostBack('Button2','');

in JavaScript but I suggest you take a look at jQuery ajax and ASP.NET Web API .

If you want to do it in OnClientClick you can't use your plugin and must go back to JavaScript confirm funcion:

OnClientClick="return confirm("Are you sure?");"

confirm will halt execution until user presses one of the buttons.