Remove .ASPX extension from URL in ASP.Net

Hi AmArcade,

Refer below sample.

HTML

Global.asax

<%@ Application Language="C#" %>
<%@ Import Namespace="System.Web.Routing" %>
<script RunAt="server">
    void Application_Start(object sender, EventArgs e)
    {
        RegisterRoutes(RouteTable.Routes);
    }

    static void RegisterRoutes(RouteCollection routes)
    {
        routes.MapPageRoute("Customers", "Customers", "~/NewFolder/Customers.aspx");
        routes.MapPageRoute("CustomerDetails", "Customers/{CustomerId}", "~/NewFolder/CustomerDetails.aspx");
    }
</script>

Customers.aspx

<h1>
    Customers</h1>
<hr />
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="false">
    <Columns>
        <asp:BoundField DataField="Id" HeaderText="Id" ItemStyle-Width="30" />
        <asp:BoundField DataField="Name" HeaderText="Name" ItemStyle-Width="150" />
        <asp:BoundField DataField="Country" HeaderText="Country" ItemStyle-Width="150" />
        <asp:HyperLinkField Text="View" DataNavigateUrlFormatString="~/Customers/{0}" DataNavigateUrlFields="Id" />
    </Columns>
</asp:GridView>

CustomerDetails.aspx

<h1>
    Customer Details</h1>
<hr />
<b>Customer Id:</b>
<asp:Label ID="lblCustomerId" runat="server" />

Namespaces

C#

using System.Data;

Code

C#

Customers.aspx.cs

protected void Page_Load(object sender, EventArgs e)
{
    if (!this.IsPostBack)
    {
        DataTable dt = new DataTable();
        dt.Columns.AddRange(new DataColumn[3] { new DataColumn("Id", typeof(int)),
                    new DataColumn("Name", typeof(string)),
                    new DataColumn("Country",typeof(string)) });
        dt.Rows.Add(1, "John Hammond", "United States");
        dt.Rows.Add(2, "Mudassar Khan", "India");
        dt.Rows.Add(3, "Suzanne Mathews", "France");
        dt.Rows.Add(4, "Robert Schidner", "Russia");
        GridView1.DataSource = dt;
        GridView1.DataBind();
    }
}

CustomerDetails.aspx.cs

protected void Page_Load(object sender, EventArgs e)
{
    if (!this.IsPostBack)
    {
        lblCustomerId.Text = this.Page.RouteData.Values["CustomerId"].ToString();
    }
}

Screenshot