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Tutorial: Integrate Tide in a Csharp WebForm Application

Run a WebForms app with a companion ASP.NET Core auth sub‑application that handles TideCloak logins. WebForms reads cookies set by the Core app.

1) Create projects​

  • WebFormsApp (UI)
  • CoreApp (Razor Pages) - performs OIDC login/logout and writes cookies (UserName, Subject).

2) WebForms default page​

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs"

Inherits="WebForms._Default" Async="true" %>

  <!DOCTYPE html>

  <html xmlns="http://www.w3.org/1999/xhtml">

    

    <head runat="server">

      <title>

        Welcome

      </title>

    </head>

    

    <body>

      <form id="form1" runat="server">

        <div>

          <a href="/coreapp/login">

            Login to Core App

          </a>

          <br/>

          <a href="/coreapp/logout">

            Logout from Core App

          </a>

          <br/>

          <asp:Panel ID="UserInfoPanel" runat="server" Visible="false">

            <asp:Literal ID="UserInfo" runat="server" />

          </asp:Panel>

        </div>

      </form>

    </body>

  

  </html>

**

protected void Page_Load(object sender, EventArgs e) {

  if (!IsPostBack) {

    var u = Request.Cookies["UserName"]?.Value;

    var s = Request.Cookies["Subject"]?.Value;

    if (!string.IsNullOrEmpty(u) && !string.IsNullOrEmpty(s)) {

      UserInfo.Text = $"Welcome, {u}! Your Session ID is {s}.";

      UserInfoPanel.Visible = true;

    }

  }

}

3) CoreApp authentication​

Install OIDC/Cookies packages and configure Program.cs as in the ASP.NET Core tutorial (authority, client, scopes, etc.).

Login/Logout/Callback​

Use the Pages you provided (Login.cshtml(.cs), Logout.cshtml(.cs), Callback.cshtml(.cs)) and in Callback set cookies then redirect back to WebForms:

Response.Cookies.Append("UserName", userName,

                        new CookieOptions {

                          Expires = DateTimeOffset.Now.AddMinutes(30)

                        });

Response.Cookies.Append("Subject", subject,

                        new CookieOptions {

                          Expires = DateTimeOffset.Now.AddMinutes(30)

                        });

return Redirect("http://localhost:8000/Default.aspx");

4) Configure IIS Express (sub‑application)​

Edit applicationhost.config so CoreApp is a sub‑app under WebFormsApp:

<application path="/coreapp" applicationPool="TideAuthAppPool">

  <virtualDirectory path="/" physicalPath="C:\Path\CoreApp\bin\Release\net8.0\publish" />

</application>

Publish CoreApp (dotnet publish -c Release) to the folder referenced above.

5) Run​

Start WebFormsApp (IIS Express). Visit http://localhost:8000, click Login to Core App, authenticate, and verify the user details show from cookies.