Javascript 在sweet alert中单击操作时从数据库中删除数据

基本上，我试图在GridView中单击delete（链接按钮）时创建一个sweetalert删除操作。当我单击Sweetalert上的删除选项时，记录没有被删除

这是我的.aspx代码

<asp:LinkButton OnClientClick="return deletealert(this);" ID="LinkButton2" CommandArgument='<%#Eval("EmployeeId")%>' runat="server" CommandName="CmdDelete" Text="Delete"  />

这是JavaScript代码

    function deletealert(ctl) {
            // STORE HREF ATTRIBUTE OF LINK CTL (THIS) BUTTON
            var defaultAction = $(ctl).prop("href");
            // CANCEL DEFAULT LINK BEHAVIOUR
            event.preventDefault();
            swal({
                title: "Are you sure?",
                text: "You will not be able to recover this imaginary   file!",
                type: "warning",
                showCancelButton: true,
                confirmButtonColor: "#DD6B55",
                confirmButtonText: "Yes, delete it!",
                cancelButtonText: "No, cancel plx!",
                closeOnConfirm: false,
                closeOnCancel: false
            }, function (isConfirm) {
                if (isConfirm) {
                    swal("Deleted!", "Your imaginary file has been deleted.", "success");
                    // RESUME THE DEFAULT LINK ACTION
                    eval(defaultAction);
                    return true;
                } else {
                    swal("Cancelled", "Your imaginary file is safe ", "error");
                    return false;
                }
            });

    function deletealert(ctl) {
            // STORE HREF ATTRIBUTE OF LINK CTL (THIS) BUTTON
            var defaultAction = $(ctl).prop("href");
            // CANCEL DEFAULT LINK BEHAVIOUR
            event.preventDefault();
            swal({
                title: "Are you sure?",
                text: "You will not be able to recover this imaginary   file!",
                type: "warning",
                showCancelButton: true,
                confirmButtonColor: "#DD6B55",
                confirmButtonText: "Yes, delete it!",
                cancelButtonText: "No, cancel plx!",
                closeOnConfirm: false,
                closeOnCancel: false
            }, function (isConfirm) {
                if (isConfirm) {
                    swal("Deleted!", "Your imaginary file has been deleted.", "success");
                    // RESUME THE DEFAULT LINK ACTION
                    eval(defaultAction);
                    return true;
                } else {
                    swal("Cancelled", "Your imaginary file is safe ", "error");
                    return false;
                }
            });