Update 07082021

WebFormApp/Account/ManagePassword.aspx.cs

@@ -0,0 +1,98 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Web;
+using System.Web.UI;
+using System.Web.UI.WebControls;
+using Microsoft.AspNet.Identity;
+using Microsoft.AspNet.Identity.Owin;
+
+namespace WebFormApp.Account
+{
+    public partial class ManagePassword : System.Web.UI.Page
+    {
+        protected string SuccessMessage
+        {
+            get;
+            private set;
+        }
+
+        private bool HasPassword(ApplicationUserManager manager)
+        {
+            return manager.HasPassword(User.Identity.GetUserId());
+        }
+
+        protected void Page_Load(object sender, EventArgs e)
+        {
+            var manager = Context.GetOwinContext().GetUserManager<ApplicationUserManager>();
+
+            if (!IsPostBack)
+            {
+                // Zu rendernde Abschnitte ermitteln
+                if (HasPassword(manager))
+                {
+                    changePasswordHolder.Visible = true;
+                }
+                else
+                {
+                    setPassword.Visible = true;
+                    changePasswordHolder.Visible = false;
+                }
+
+                // Erfolgsmeldung rendern
+                var message = Request.QueryString["m"];
+                if (message != null)
+                {
+                    // Abfragezeichenfolge aus der Aktion entfernen
+                    Form.Action = ResolveUrl("~/Account/Manage");
+                }
+            }
+        }
+
+        protected void ChangePassword_Click(object sender, EventArgs e)
+        {
+            if (IsValid)
+            {
+                var manager = Context.GetOwinContext().GetUserManager<ApplicationUserManager>();
+                var signInManager = Context.GetOwinContext().Get<ApplicationSignInManager>();
+                IdentityResult result = manager.ChangePassword(User.Identity.GetUserId(), CurrentPassword.Text, NewPassword.Text);
+                if (result.Succeeded)
+                {
+                    var user = manager.FindById(User.Identity.GetUserId());
+                    signInManager.SignIn( user, isPersistent: false, rememberBrowser: false);
+                    Response.Redirect("~/Account/Manage?m=ChangePwdSuccess");
+                }
+                else
+                {
+                    AddErrors(result);
+                }
+            }
+        }
+
+        protected void SetPassword_Click(object sender, EventArgs e)
+        {
+            if (IsValid)
+            {
+                // Lokale Anmeldeinformationen erstellen und das lokale Konto mit dem Benutzer verknüpfen
+                var manager = Context.GetOwinContext().GetUserManager<ApplicationUserManager>();
+                IdentityResult result = manager.AddPassword(User.Identity.GetUserId(), password.Text);
+                if (result.Succeeded)
+                {
+                    Response.Redirect("~/Account/Manage?m=SetPwdSuccess");
+                }
+                else
+                {
+                    AddErrors(result);
+                }
+            }
+        }
+
+        private void AddErrors(IdentityResult result)
+        {
+            foreach (var error in result.Errors)
+            {
+                ModelState.AddModelError("", error);
+            }
+        }
+    }
+}