完成用户删除功能。

Author: ltm0203

StudentManagement/StudentManagement/Controllers/AdminController.cs

@@ -3,86 +3,68 @@
 using Microsoft.AspNetCore.Mvc;
 using StudentManagement.Models;
 using StudentManagement.ViewModels;
-using System;
 using System.Collections.Generic;
 using System.Linq;
 using System.Threading.Tasks;
 
 namespace StudentManagement.Controllers
 {
-    [Authorize(Roles ="Admin")]
-    public class AdminController:Controller
+    [Authorize(Roles = "Admin")]
+    public class AdminController : Controller
     {
         private RoleManager<IdentityRole> roleManager;
         private UserManager<ApplicationUser> userManager;
 
-        public AdminController(RoleManager<IdentityRole> roleManager,UserManager<ApplicationUser> userManager)
+        public AdminController(RoleManager<IdentityRole> roleManager, UserManager<ApplicationUser> userManager)
         {
             this.roleManager = roleManager;
             this.userManager = userManager;
         }
 
-
-
-
         #region 角色管理
 
-     
-
-        // GET  Post 
+        // GET  Post
 
         [HttpGet]
-        public  IActionResult CreateRole()
+        public IActionResult CreateRole()
         {
-
             return View();
         }
 
-
         [HttpPost]
         public async Task<IActionResult> CreateRole(CreateRoleViewModel model)
         {
             if (ModelState.IsValid)
             {
-
                 IdentityRole identityRole = new IdentityRole
                 {
                     Name = model.RoleName
                 };
 
                 //如果您尝试创建具有已存在的同名的角色，则会收到验证错误。
-                IdentityResult result =   await roleManager.CreateAsync(identityRole);
+                IdentityResult result = await roleManager.CreateAsync(identityRole);
 
                 if (result.Succeeded)
                 {
                     return RedirectToAction("ListRoles", "Admin");
                 }
 
-
                 foreach (var error in result.Errors)
                 {
                     ModelState.AddModelError("", error.Description);
                 }
-
-
             }
 
-
-
             return View(model);
         }
 
-
-
         public IActionResult ListRoles()
         {
-
             var roles = roleManager.Roles;
 
             return View(roles);
         }
 
-
         [HttpGet]
         public async Task<IActionResult> EditRole(string id)
         {
@@ -105,23 +87,19 @@ public async Task<IActionResult> EditRole(string id)
                 //如果用户拥有此角色，请将用户名添加到
                 //EditRoleViewModel模型中的Users属性中
 
-                if (await userManager.IsInRoleAsync(user,role.Name))
+                if (await userManager.IsInRoleAsync(user, role.Name))
                 {
                     model.Users.Add(user.UserName);
                 }
             }
             //然后将对象传递给视图显示到客户端
             return View(model);
-
         }
 
-
-
-
         [HttpPost]
         public async Task<IActionResult> EditRole(EditRoleViewModel model)
         {
-            var role =await roleManager.FindByIdAsync(model.Id);
+            var role = await roleManager.FindByIdAsync(model.Id);
 
             if (role == null)
             {
@@ -132,7 +110,7 @@ public async Task<IActionResult> EditRole(EditRoleViewModel model)
             {
                 role.Name = model.RoleName;
 
-             var result= await  roleManager.UpdateAsync(role);
+                var result = await roleManager.UpdateAsync(role);
 
                 if (result.Succeeded)
                 {
@@ -141,31 +119,18 @@ public async Task<IActionResult> EditRole(EditRoleViewModel model)
 
                 foreach (var error in result.Errors)
                 {
-
                     ModelState.AddModelError("", error.Description);
-
                 }
 
-
                 return View(model);
-
             }
-
-
-
-
-
-
-          
         }
 
-
         [HttpGet]
         public async Task<IActionResult> EditUsersInRole(string roleId)
         {
             ViewBag.roleId = roleId;
 
-
             var role = await roleManager.FindByIdAsync(roleId);
 
             if (role == null)
@@ -176,10 +141,8 @@ public async Task<IActionResult> EditUsersInRole(string roleId)
 
             var model = new List<UserRoleViewModel>();
 
-
             foreach (var user in userManager.Users)
             {
-
                 var userRoleViewmodel = new UserRoleViewModel
                 {
                     UserId = user.Id,
@@ -193,48 +156,40 @@ public async Task<IActionResult> EditUsersInRole(string roleId)
                 else
                 {
                     userRoleViewmodel.IsSelected = false;
-
                 }
 
-
-                model.Add(userRoleViewmodel);      
-
+                model.Add(userRoleViewmodel);
             }
 
-
-
             return View(model);
-
         }
 
         [HttpPost]
         public async Task<IActionResult> EditUsersInRole(List<UserRoleViewModel> model, string roleId)
         {
-
             var role = await roleManager.FindByIdAsync(roleId);
             if (role == null)
             {
                 ViewBag.ErrorMessage = $"角色id为{roleId}的信息不存在，请重试。";
                 return View("NotFound");
             }
 
-
             for (int i = 0; i < model.Count; i++)
             {
-                var user = await userManager.FindByIdAsync(model[i].UserId);               
+                var user = await userManager.FindByIdAsync(model[i].UserId);
 
-                var isInRole = await userManager.IsInRoleAsync(user,role.Name);
+                var isInRole = await userManager.IsInRoleAsync(user, role.Name);
                 IdentityResult result = null;
 
                 //被选中，不属于该角色，这个时候，添加到角色中。
-                if (model[i].IsSelected&&!isInRole)
+                if (model[i].IsSelected && !isInRole)
                 {
-                     result =await userManager.AddToRoleAsync(user,role.Name);
+                    result = await userManager.AddToRoleAsync(user, role.Name);
                 }
                 //没有被选中，但是用户已经在角色中，移除出来
-                else if (!model[i].IsSelected&&isInRole)
+                else if (!model[i].IsSelected && isInRole)
                 {
-              result =await userManager.RemoveFromRoleAsync(user,role.Name); 
+                    result = await userManager.RemoveFromRoleAsync(user, role.Name);
                 }
                 else//被选中，已经存角色中，不发生任何改变的数据
                 {
@@ -244,52 +199,41 @@ public async Task<IActionResult> EditUsersInRole(List<UserRoleViewModel> model,
                 if (result.Succeeded)
                 {
                     //7个总用户数，0开始进行索引。
-                    if (i<(model.Count-1))
+                    if (i < (model.Count - 1))
                     {
                         continue;
                     }
                     else
                     {
                         return RedirectToAction("EditRole", new { id = roleId });
-
                     }
-
-
-                }               
-
-
-
+                }
             }
 
             return RedirectToAction("EditRole", new { id = roleId });
         }
 
-
-        #endregion
-
+        #endregion 角色管理
 
         #region 用户管理
 
         [HttpGet]
         public IActionResult ListUsers()
         {
-
             var users = userManager.Users.ToList();
-          
-
 
             return View(users);
-
         }
 
-
-
-       [HttpGet]
-       public async Task<IActionResult> EditUser(string id)
+        [HttpGet]
+        public async Task<IActionResult> EditUser(string id)
         {
-            var user =await userManager.FindByIdAsync(id);
+          
+
+          
+                var user = await userManager.FindByIdAsync(id);
 
-            if (user==null)
+            if (user == null)
             {
                 ViewBag.ErrorMessage = $"无法找到ID{id}的用户";
                 return View("NotFound");
@@ -299,54 +243,77 @@ public async Task<IActionResult> EditUser(string id)
 
             var userRoles = await userManager.GetRolesAsync(user);
 
-            var model = new EditUserViewModel() { 
-            Id=user.Id,
-            Email=user.Email,
-            UserName=user.UserName,
-            City=user.City,
-            Claims=userClaims.Select(c=>c.Value).ToList(),
+            var model = new EditUserViewModel()
+            {
+                Id = user.Id,
+                Email = user.Email,
+                UserName = user.UserName,
+                City = user.City,
+                Claims = userClaims.Select(c => c.Value).ToList(),
                 Roles = userRoles
             };
-
+     
             return View(model);
-
         }
 
-
-
         [HttpPost]
-        public async Task<IActionResult> EditUser(EditUserViewModel model){
+        public async Task<IActionResult> EditUser(EditUserViewModel model)
+        {
+            if (ModelState.IsValid)
+            {
+                var user = await userManager.FindByIdAsync(model.Id);
+                if (user == null)
+                {
+                    ViewBag.ErrorMessage = $"无法找到ID{model.Id}的用户";
+                    return View("NotFound");
+                }
+                else
+                {
+                    user.Email = model.Email;
+                    user.UserName = model.UserName;
+                    user.City = model.City;
+                    var result = await userManager.UpdateAsync(user);
+                    if (result.Succeeded)
+                    {
+                        return RedirectToAction("ListUsers");
+                    }
+                    foreach (var item in result.Errors)
+                    {
+                        ModelState.AddModelError("", item.Description);
+                    }
+                }
+            }
+            return View(model);
+          
+        }
 
-            var user = await userManager.FindByIdAsync(model.Id);
+        [HttpPost]
+        public async Task<IActionResult> DeleteUser(string id)
+        {
+            var user = await userManager.FindByIdAsync(id);
             if (user == null)
             {
-                ViewBag.ErrorMessage = $"无法找到ID{model.Id}的用户";
+                ViewBag.ErrorMessage = $"无法找到ID{id}的用户";
                 return View("NotFound");
             }
             else
             {
-                user.Email = model.Email;
-                user.UserName = model.UserName;
-                user.City = model.City;
-                var result = await userManager.UpdateAsync(user);
+                var result = await userManager.DeleteAsync(user);
+
                 if (result.Succeeded)
                 {
                     return RedirectToAction("ListUsers");
                 }
-                foreach (var item in result.Errors)
+
+                foreach (var error in result.Errors)
                 {
-                    ModelState.AddModelError("", item.Description);
+                    ModelState.AddModelError("", error.Description);
                 }
-
-                return View(model);
-
             }
-        }
-
-
-        #endregion
-
 
+            return View("ListUsers");
+        }
 
+        #endregion 用户管理
     }
-}
+}