建立控制器UsersAdminController
第一步：在controllers文件夹上点右键》添加》控制器， 我这里选的是“MVC5 控制器-空”，名称设置为：UsersAdminController.cs
第二步：添加命名空间
using System.Data.Entity; using System.Net; using System.Threading.Tasks; using xxxx（项目名）.Models; using Microsoft.AspNet.Identity; using Microsoft.AspNet.Identity.Owin; using Microsoft.AspNet.Identity.EntityFramework;
第三步：在控制器的空间命名下添加权限（如果在第一讲中你选择了可选操作这里可以直接添加权限，否则要么改，要么先别填。）
[Authorize(Roles = "Admin")]
第四步：在public class UsersAdminController : Controller内添加如下代码
public UsersAdminController()
{
}
public UsersAdminController(ApplicationUserManager userManager, ApplicationRoleManager roleManager)
{
UserManager = userManager;
RoleManager = roleManager;
}
private ApplicationUserManager _userManager;
public ApplicationUserManager UserManager
{
get
{
return _userManager ?? HttpContext.GetOwinContext().GetUserManager<ApplicationUserManager>();
}
private set
{
_userManager = value;
}
}
private ApplicationRoleManager _roleManager;
public ApplicationRoleManager RoleManager
{
get
{
return _roleManager ?? HttpContext.GetOwinContext().Get<ApplicationRoleManager>();
}
private set
{
_roleManager = value;
}
}
第五步：修改ActionResult Index()
修改后为
public async Task<ActionResult> Index()
{
return View(await UserManager.Users.ToListAsync());
}
第六步：添加用户详情
//
//异步读取用户详情
//GET: /Users/Details/5
public async Task<ActionResult> Details(string id)
{
//用户为空时返回400错误
if (id == null)
{
return new HttpStatusCodeResult(HttpStatusCode.BadRequest);
}
//按Id查找用户
var user = await UserManager.FindByIdAsync(id);
ViewBag.RoleNames = await UserManager.GetRolesAsync(user.Id);
return View(user);
}
第七步：添加用户创建
//
//异步读取用户创建
//GET:/Users/Create
public async Task <ActionResult>Create()
{
//读取角色列表
ViewBag.RoleId = new SelectList(await RoleManager.Roles.ToListAsync(), "Name", "Name");
return View();
}
//
//异步写入用户创建
// POST: /Users/Create
[HttpPost]
public async Task <ActionResult> Create(RegisterViewModel userViewModel,params string [] selectedRoles)
{
if (ModelState.IsValid)
{
var user = new ApplicationUser { UserName = userViewModel.Email, Email = userViewModel.Email };
var adminresult = await UserManager.CreateAsync(user, userViewModel.Password);
//
if(adminresult.Succeeded)
{
if(selectedRoles!=null)
{
var result = await UserManager.AddToRolesAsync(user.Id, selectedRoles);
if(!result.Succeeded)
{
ModelState.AddModelError("", result.Errors.First());
ViewBag.RoleId = new SelectList(await RoleManager.Roles.ToListAsync(), "Name", "Name");
return View();
}
}
}
else
{
ModelState.AddModelError("", adminresult.Errors.First());
ViewBag.RoleId = new SelectList(RoleManager.Roles, "Name", "Name");
return View();
}
return RedirectToAction("Index");
}
ViewBag.RoleId = new SelectList(RoleManager.Roles, "Name", "Name");
return View();
}
第八步：添加用户编辑
//
//读取用户编辑
// GET: /Users/Edit/1
public async Task <ActionResult> Edit (string id)
{
if(id == null )
{
return new HttpStatusCodeResult(HttpStatusCode.BadRequest);
}
var user = await UserManager.FindByIdAsync(id);
if (user ==null )
{
return HttpNotFound();
}
var userRoles = await UserManager.GetRolesAsync(user.Id);
return View(new EditUserViewModel()
{
Id = user.Id,
Email = user.Email,
RolesList = RoleManager.Roles.ToList().Select(x => new SelectListItem()
{
Selected = userRoles.Contains(x.Name),
Text = x.Name,
Value = x.Name
})
});
}
//
//写入用户编辑
// POST: /Users/Edit/5
[HttpPost]
[ValidateAntiForgeryToken]
public async Task<ActionResult> Edit([Bind(Include = "Email,Id")]EditUserViewModel editUser, params string[] selectedRole)
{
if(ModelState.IsValid)
{
var user = await UserManager.FindByIdAsync(editUser.Id);
if (user == null)
{
return HttpNotFound();
}
user.UserName = editUser.Email;
user.Email = editUser.Email;
var userRoles = await UserManager.GetRolesAsync(user.Id);
selectedRole = selectedRole ?? new string[] { };
var result = await UserManager.AddToRolesAsync(user.Id, selectedRole.Except(userRoles).ToArray<string>());
if(!result.Succeeded)
{
ModelState.AddModelError("", result.Errors.First());
return View();
}
return RedirectToAction("Index");
}
ModelState.AddModelError("", "操作失败。");
return View();
}
第九步：添加用户删除
//
//读取用户删除
// GET: /Users/Delete/5
public async Task<ActionResult> Delete(string id)
{
if (id == null)
{
return new HttpStatusCodeResult(HttpStatusCode.BadRequest);
}
var user = await UserManager.FindByIdAsync(id);
if (user == null)
{
return HttpNotFound();
}
return View(user);
}
//
//写入角色删除
// POST: /Users/Delete/5
[HttpPost, ActionName("Delete")]
[ValidateAntiForgeryToken]
public async Task<ActionResult> DeleteConfirmed(string id)
{
if(ModelState.IsValid)
{
if (id == null)
{
return new HttpStatusCodeResult(HttpStatusCode.BadRequest);
}
var user = await UserManager.FindByIdAsync(id);
if(user == null)
{
return HttpNotFound();
}
var result = await UserManager.DeleteAsync(user);
if(!result .Succeeded)
{
ModelState.AddModelError("", result.Errors.First());
return View();
}
return RedirectToAction("Index");
}
return View();
}
至此，UsersAdmin控制器完成。