如何列出已分配给角色的所有用户。这是我的模特。
namespace Comtrex_ICU.Models
{
public class UsersContext : DbContext
{
public UsersContext()
: base("DefaultConnection")
{
}
public DbSet<UserProfile> UserProfiles { get; set; }
public DbSet<Membership> Membership { get; set; }
public DbSet<Role> Roles { get; set; }
}
[Table("UserProfile")]
public class UserProfile
{
[Key]
[DatabaseGeneratedAttribute(DatabaseGeneratedOption.Identity)]
public int UserId { get; set; }
public string UserName { get; set; }
public string Email { get; set; }
}
[Table("webpages_Roles")]
public class Role
{
[Key]
[DatabaseGeneratedAttribute(DatabaseGeneratedOption.Identity)]
public int RoleId { get; set; }
public string RoleName { get; set; }
}
到目前为止，这是我的控制器：当我单击该角色时，它确实会返回一个在该视图中具有该角色正确名称的视图：
//List all users for a role
[HttpGet]
public ActionResult List(string UserName, string RoleName)
{
using (UsersContext db = new UsersContext())
{
var roleSelect = db.Roles.Where(r => r.RoleName.Equals(RoleName)).FirstOrDefault();
return View(roleSelect);
}
}
此视图显示所有已保存角色的列表，以及用于编辑，删除和列出该特定角色的链接。
@{
ViewBag.Title = "RoleIndex";
Layout = "~/Views/Shared/_Layout.cshtml";
}
<div class="spacerBody">
<h2 class="admin-home-link">@Html.ActionLink("Roles", "AdminIndex")</h2>
@Html.ActionLink("Create New Role", "RoleCreate") |
@Html.ActionLink("Manage User Roles", "RoleAddToUser")
<p> </p>
<div>
@foreach (string s in Model)
{
<div id="userRolesList">
<p class="role-p">
@s
|<span onclick="return confirm('Are you sure to delete?')">
<a href="/Account/RoleDelete?RoleName=@s"
class="delLink"> <span style="color: #f05322">Delete</span>
</a>
</span>
|<a href="/Account/Edit?RoleName=@s">Edit</a>
|<a href="/Account/List?RoleName=@s">List</a>
</p>
</div>
<div>
</div>
}
</div>
</div>
然后，当我单击列表链接时，将带我到该视图：
@model Comtrex_ICU.Models.Role
@{
ViewBag.Title = "List";
Layout = "~/Views/Shared/_Layout.cshtml";
}
<h2 class="admin-home-link">@Html.ActionLink("List", "AdminIndex")</h2>
<hr/>
@using (Html.BeginForm())
{
@Html.AntiForgeryToken()
@Html.ValidationSummary(true)
@Html.HiddenFor(m => m.RoleId)
<p>
@Model.RoleName
</p>
}
我将如何列出与正确角色相对应的特定用户？
答案 0 :(得分：1)
添加新的模型用户组
public class UsersGroups
{
public string Id { get; set; }
public string Username { get; set; }
public string Email { get; set; }
public string IdRole { get; set; }
public string Role { get; set; }
}
添加新的Controller UsersGroupController
using System;
using System.Collections.Generic;
using System.Data;
using System.Data.Entity;
using System.Linq;
using System.Net;
using System.Web;
using System.Web.Mvc;
using Ebdaa2030.Models;
using Microsoft.AspNet.Identity;
using Microsoft.AspNet.Identity.Owin;
public class UsersGroupController : Controller
{
private Ebdaa2030DBEntities db = new Ebdaa2030DBEntities();
private ApplicationUserManager _userManager;
// GET: UsersGroup
public ActionResult Index()
{
var usersWithRoles = (from user in db.AspNetUsers
from userRole in user.AspNetRoles
join role in db.AspNetRoles on userRole.Id equals
role.Id
select new UsersGroups()
{
Id = user.Id,
Username = user.UserName,
Email = user.Email,
Role = role.Name,
IdRole = role.Id
}).ToList();
return View(usersWithRoles);
}
public ApplicationUserManager UserManager
{
get
{
return _userManager ?? HttpContext.GetOwinContext().GetUserManager<ApplicationUserManager>();
}
private set
{
_userManager = value;
}
}
// GET: Users/Edit/5
public ActionResult Edit(string id)
{
ViewBag.UserType = new SelectList(db.AspNetRoles.ToList(), "Name", "Name");
return View();
}
[HttpPost]
[ValidateAntiForgeryToken]
public virtual ActionResult Edit(AspNetUser user, string role)
{
if (ModelState.IsValid)
{
ViewBag.UserType = new SelectList(db.AspNetRoles.ToList(), "Name", "Name");
var oldUser = db.AspNetUsers.SingleOrDefault(u => u.Id == user.Id);
var oldRoleId = oldUser.AspNetRoles.SingleOrDefault().Id;
var oldRoleName = db.AspNetRoles.SingleOrDefault(r => r.Id == oldRoleId).Name;
if (oldRoleName != role)
{
UserManager.RemoveFromRole(user.Id, oldRoleName);
UserManager.AddToRole(user.Id, user.UserType);
}
UserManager.AddToRoleAsync(user.Id, user.UserType);
return RedirectToAction("Index");
}
return View(user);
}
protected override void Dispose(bool disposing)
{
if (disposing)
{
db.Dispose();
}
base.Dispose(disposing);
}
}
别忘了将连接更改为您的连接
添加索引视图
@model IEnumerable<Ebdaa2030.Models.UsersGroups>
@{
Layout = "~/Views/Shared/_Layout ControlME.cshtml";
}
<div class="row text-center">
<div class="container-fluid">
<div class="card-header">
<i class="fa fa-table"></i> <b>Rols</b>
</div>
<br />
<div class="card-body">
<div class="table-responsive text-black">
<table class="table table-bordered table-hover w-100 text-center" id="dataTable" cellspacing="0">
<thead>
<tr>
<th>
User Name
</th>
<th>
Email
</th>
<th>
Role
</th>
<th>Tools</th>
</tr>
</thead>
@foreach (var user in Model)
{
<tr>
<td>
@Html.DisplayFor(Model => user.Username)
</td>
<td>
@Html.DisplayFor(Model => user.Email)
</td>
<td>
@Html.DisplayFor(Model => user.Role)
</td>
<td>
<a class="btn btn-success" href="@Url.Action("Edit", "UsersGroup", new { id = user.Id })">
<i class="fa fa-edit "></i>
</a>
</td>
</tr>
}
</table>
</div>
<div class="container-fluid">
<div class="alert alert-success">
<label>Count </label>  @Model.Count()
</div>
</div>
<br />
</div>
</div>
</div>
添加更新视图
@model Ebdaa2030.Models.UsersGroups
@{
Layout = "~/Views/Shared/_Layout ControlME.cshtml";
}
<div class="row text-center">
<div class="container-fluid">
<div class="card-header">
<i class="fa fa-table"></i> <b>Rols</b>
</div>
<br />
<div class="card-body">
@using (Html.BeginForm())
{
@Html.AntiForgeryToken()
<div class="form-horizontal">
@Html.ValidationSummary(true, "", new { @class = "text-danger" })
@Html.HiddenFor(Model => Model.Id)
<div class="form-group">
<label class="col-md-2 control-label "> <b> Role</b></label>
<div class="col-md-5">
@Html.DropDownList("UserType", null, new { @id = "role", @class = "form-control" })
</div>
</div>
<div class="input-group col-md-offset-2 col-md-3">
<div class="input-group-append ">
<button type="submit" class="btn btn-success"> Update</button>
@Html.ActionLink("Back", "Index", "UsersGroup", null, new { @class = "btn btn-primary" })
</div>
</div>
</div>
}
</div>
</div>
</div>