Call AjaxFileUpload OnUploadComplete event on another Button click event using C# and jQuery in ASP.Net

hi thank you for your help.

it is working fine as expected however i used ur logic in a diff way

        function validate() {
            if ($(".ajax__fileupload_fileItemInfo").length > 0) {
                alert('file exist');
                //  $('.ContentPlaceHolder1_AjaxFileUpload1_UploadOrCancelButton').hide();
                //  $("[id$=AjaxFileUpload1_UploadOrCancelButton]").click();
                $(".ajax__fileupload_uploadbutton").trigger("click");
                alert("Hiiii");
                return true;
            }
            else {
                alert('select your file');
                return false;
            }
        };

and called it on button client upload.