1 files changed, 29 insertions, 17 deletions
diff --git a/samples/OpenIdProviderWebForms/Default.aspx.cs b/samples/OpenIdProviderWebForms/Default.aspx.cs
index 4843639..5d27251 100644
--- a/samples/OpenIdProviderWebForms/Default.aspx.cs
+++ b/samples/OpenIdProviderWebForms/Default.aspx.cs
@@ -1,6 +1,8 @@
 namespace OpenIdProviderWebForms {
 	using System;
+	using System.Threading.Tasks;
 	using System.Web.Security;
+	using System.Web.UI;
 	using System.Web.UI.WebControls;
 	using DotNetOpenAuth.Messaging;
 	using DotNetOpenAuth.OpenId;
@@ -12,32 +14,42 @@
 	/// </summary>
 	public partial class _default : System.Web.UI.Page {
 		protected void Page_Load(object sender, EventArgs e) {
-			if (Request.QueryString["rp"] != null) {
-				if (Page.User.Identity.IsAuthenticated) {
-					this.SendAssertion(Request.QueryString["rp"]);
-				} else {
-					FormsAuthentication.RedirectToLoginPage();
-				}
-			} else {
-				TextBox relyingPartySite = (TextBox)this.loginView.FindControl("relyingPartySite");
-				if (relyingPartySite != null) {
-					relyingPartySite.Focus();
-				}
-			}
+			this.RegisterAsyncTask(
+				new PageAsyncTask(
+					async ct => {
+						if (Request.QueryString["rp"] != null) {
+							if (Page.User.Identity.IsAuthenticated) {
+								await this.SendAssertionAsync(Request.QueryString["rp"]);
+							} else {
+								FormsAuthentication.RedirectToLoginPage();
+							}
+						} else {
+							TextBox relyingPartySite = (TextBox)this.loginView.FindControl("relyingPartySite");
+							if (relyingPartySite != null) {
+								relyingPartySite.Focus();
+							}
+						}
+					}));
 		}
 
-		protected void sendAssertionButton_Click(object sender, EventArgs e) {
-			TextBox relyingPartySite = (TextBox)this.loginView.FindControl("relyingPartySite");
-			this.SendAssertion(relyingPartySite.Text);
+		protected async void sendAssertionButton_Click(object sender, EventArgs e) {
+			this.RegisterAsyncTask(
+				new PageAsyncTask(
+					async ct => {
+						TextBox relyingPartySite = (TextBox)this.loginView.FindControl("relyingPartySite");
+						await this.SendAssertionAsync(relyingPartySite.Text);
+					}));
 		}
 
-		private void SendAssertion(string relyingPartyRealm) {
+		private async Task SendAssertionAsync(string relyingPartyRealm) {
 			Uri providerEndpoint = new Uri(Request.Url, Page.ResolveUrl("~/server.aspx"));
 			OpenIdProvider op = new OpenIdProvider();
 			try {
 				// Send user input through identifier parser so we accept more free-form input.
 				string rpSite = Identifier.Parse(relyingPartyRealm);
-				op.PrepareUnsolicitedAssertion(providerEndpoint, rpSite, Util.BuildIdentityUrl(), Util.BuildIdentityUrl()).Send();
+				var response = await op.PrepareUnsolicitedAssertionAsync(providerEndpoint, rpSite, Util.BuildIdentityUrl(), Util.BuildIdentityUrl());
+				await response.SendAsync();
+				this.Context.Response.End();
 			} catch (ProtocolException ex) {
 				Label errorLabel = (Label)this.loginView.FindControl("errorLabel");
 				errorLabel.Visible = true;