How to use jQuery Context Menu for GridView in ASP.Net

hi everbody,

i use contextMenu  for right click in griview and display boostrap modal this work ok, but i don't understant how to get id of row to change or delete, here  my code

my grid

<asp:GridView ID="GridView1" OnSelectedIndexChanged="GridView1_SelectedIndexChanged"
    DataKeyNames="Id" data-page-size="3" ShowFooter="true" OnRowCreated="GridView1_RowCreated"
    OnRowDataBound="GridView1_RowDataBound" OnPageIndexChanging="GridView1_PageIndexChanging"
    CssClass="footable" runat="server" AutoGenerateColumns="false">
    <Columns>
        <asp:TemplateField HeaderText="CustomerID">
            <ItemTemplate>
                <asp:Label ID="lbl_CustomerID" runat="server" Text='<%# Eval("Id") %>'></asp:Label>
                <asp:HiddenField ID="HiddenField1" runat="server" />
            </ItemTemplate>
        </asp:TemplateField>
        <asp:TemplateField HeaderText="CompanyName">
            <ItemTemplate>
                <asp:Label ID="lbl_CompanyName" runat="server" Text='<%# Eval("Name") %>'></asp:Label>
            </ItemTemplate>
        </asp:TemplateField>
        <asp:TemplateField HeaderText="ContactName">
            <ItemTemplate>
                <asp:Label ID="lbl_ContactName" runat="server" Text='<%# Eval("Country") %>'></asp:Label>
            </ItemTemplate>
        </asp:TemplateField>
        <asp:TemplateField HeaderText="Salary">
            <ItemTemplate>
                <asp:Label ID="lbl_Salary" runat="server" Text='<%# Eval("Salary") %>'></asp:Label>
            </ItemTemplate>
        </asp:TemplateField>
    </Columns>
</asp:GridView>

my java call contextmenu and call modal

 <link href="https://cdnjs.cloudflare.com/ajax/libs/jquery-contextmenu/2.2.4/jquery.contextMenu.css" rel="stylesheet" />
    <%-- <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>--%>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/jquery-contextmenu/2.2.4/jquery.contextMenu.js"></script>
    <script type="text/javascript">
       
        $.contextMenu({
            selector: '[id*=GridView1]',
            className: 'data-title',
            callback: function (key, options) {
                var m = "clicked: " + key;

                if (key == "edit") {

                    callModal();
                    GetSelectedRow(this);
                } else if (key == "cut") {
                    window.console && console.log(m) || alert(m + 'cut');
                }
                else if (key == "cut1") {
                    callModal2();
                    GetSelectedRow(this);
                }
            },
            items: {
                "edit": { name: "convert 1", icon: "edit" },
                "cut": { name: "convert press c key", icon: "cut", accesskey: "c" },
                "cut1": { name: "convert 2", icon: "cut" },
                "cut2": { name: "convert 2", icon: "cut" },
                "cut3": { name: "convert 2", icon: "cut" },
                "cut4": { name: "convert 2", icon: "cut" },
                "cut5": { name: "convert 2", icon: "cut" },
                "copy": { name: "convert 3", icon: "copy" },
                "paste": { name: "convert 4", icon: "paste" },
                "delete": { name: "convert 5", icon: "delete", disabled: true },
                "sep1": "---------",
                "quit": { name: "Quit", icon: function ($element, key, item) { return 'context-menu-icon context-menu-icon-quit'; } }
            }
        });

        // set a title
        $('.data-title').attr('data-menutitle', "Some JS Title");
    </script>
    
    <script type="text/javascript">
        function callModal() {
            $('#myModal').modal('show');
        }
        function callModal2() {
            $('#myModal2').modal('show');
        }
        
    </script>

and modal

 <div class="modal fade" id="myModal" tabindex="-1" role="dialog" aria-labelledby="gridSystemModalLabel">
    <div class="modal-dialog" role="document">
        <div class="modal-content">
            <div class="modal-header">
                <button type="button" class="close" data-dismiss="modal" aria-label="Close">
                    <span aria-hidden="true">&times;</span></button>
                <h4 class="modal-title" id="gridSystemModalLabel">
                    Test one</h4>
            </div>
            <div class="modal-body">
                <div class="row">
                    <div class="col-md-4">
                        <asp:Label ID="Label1" runat="server" Text="Label"></asp:Label>
                    </div>
                </div>
            </div>
            <div class="modal-footer">
                <button type="button" class="btn btn-default" data-dismiss="modal">
                    Close</button>
                <button type="button" class="btn btn-primary">
                    Save changes</button>
            </div>
        </div>
        <!-- /.modal-content -->
    </div>
    <!-- /.modal-dialog -->
</div>

how to get  customerId when i right click on gridview row thanks in advance