Delete Cookie in ASP.Net Example

Please refer the below code and see how i am creating and deleting the cookies

<form id="form1" runat="server">
    <div>
        <asp:Button ID="btnGetValues" runat="server" Text="Get Values from Cookie" OnClick="GetCookie" />
        <br />
        Value from Cookie
        <br />
        Name
        <br />
        <asp:Label ID="lblName" runat="server" />
        <br />
        City
        <br />
        <asp:Label ID="lblCity" runat="server" />
        <br />
        <asp:Button ID="btnDeleteCookie" runat="server" Text="Delete Cookie" OnClick="DeleteCookie" />
    </div>
    </form>

C#:

protected void Page_Load(object sender, EventArgs e)
    {
        if (!this.IsPostBack)
        {
            Response.Cookies["StudentCookies"]["Name"] = "Azim";
            Response.Cookies["StudentCookies"]["City"] = "Mumbai";
            Response.Cookies["StudentCookies"].Expires = DateTime.Now.AddDays(1);
        }
    }

    protected void GetCookie(object sender, EventArgs e)
    {
        if (Request.Cookies["StudentCookies"] != null)
        {
            this.lblName.Text = Request.Cookies["StudentCookies"]["Name"];
            this.lblCity.Text = Request.Cookies["StudentCookies"]["City"];
        }
    }

    protected void DeleteCookie(object sender, EventArgs e)
    {
        if (Request.Cookies["StudentCookies"] != null)
        {
            Response.Cookies["StudentCookies"].Expires = DateTime.Now.AddDays(-1d);
            this.lblName.Text = string.Empty;
            this.lblCity.Text = string.Empty;
        }
    }

Thank You.