gURbYDh1

1checkbox does not retain its state
2public ActionResult Edit(int id)
3        {
4            accounts accounts = db.accounts
5                .Include(i => i.roles_accounts)
6                .Where(i => i.id_account == id)
7                .Single();
8            PopulateAssignedRoleData(accounts);
9            return View(accounts);
10        }
11
12        // populate Assigned RoleDATA pour afficher les checkbox
13        private void PopulateAssignedRoleData(accounts account)
14        {
15             //Get all role
16          var allRole =db.roles;
17           //For each role, the code checks if the role exists in the property of accountRole
18            // To create effective search when checking if a role is assigned to the account,
19            // assigned roles in are put into a collection HashSet
20          var accountRoles = new HashSet<int>(account.roles_accounts.Select(r => r.id_account_role));
21          var viewModel = new List<AssignedRoleData>();
22           // Property Assigned role of which is allocated account is set to true.
23           //The view will use this property to determine
24           //what check boxes to be displayed as selected.
25           //Finally, the list is passed to the view in a ViewBag
26          foreach (var role in allRole)
27          {
28              viewModel.Add(new AssignedRoleData
29              {
30                  RoleId = role.id_role,
31                  Name = role.name,
32                  Assigned = accountRoles.Contains(role.id_role)
33              });
34          }
35          ViewBag.roles = viewModel;
36        }
37
38        //
39        // POST: /Account/Edit/5
40
41        [HttpPost]
42        public ActionResult Edit(int id, FormCollection formCollection, string [] selectedRoles)
43        {
44
45
46            var accountsToUpdate = db.accounts
47                .Include(i => i.roles_accounts)
48                .Where(i => i.id_account == id)
49                .Single();
50            if (TryUpdateModel(accountsToUpdate, "", null, new string[] { "roles_accounts" }))
51            {
52                try
53                {
54                    if (String.IsNullOrWhiteSpace(accountsToUpdate.login))
55                    {
56                        accountsToUpdate.roles_accounts = null;
57                    }
58                    UpdateAccountRole(selectedRoles, accountsToUpdate);
59                    db.Entry(accountsToUpdate).State = EntityState.Modified;
60                    db.SaveChanges();
61                    return RedirectToAction("Index");
62                }
63
64                catch (DataException)
65                {
66                    ModelState.AddModelError("", "Unable to save change");
67                }
68        }
69            PopulateAssignedRoleData(accountsToUpdate);
70            return View(accountsToUpdate);
71    }
72
73        // update AccountRole (liste of checkbox)
74        private void UpdateAccountRole(string[] selectedRoles, accounts accountToUpdate)
75        {
76            if (selectedRoles == null)
77            {
78
79                accountToUpdate.roles_accounts=new List<roles_accounts>();
80                return;
81            }
82            var selectedRolesHS = new HashSet<string>(selectedRoles);
83            var accountsRoles = new HashSet<int>
84            (accountToUpdate.roles_accounts.Select(r => r.id_account_role));
85
86            foreach(var role in db.roles_accounts)
87            {
88                if( selectedRolesHS.Contains(role.id_account_role.ToString()))
89                {
90                    if(!accountsRoles.Contains(role.id_account_role))
91                    {
92                        accountToUpdate.roles_accounts.Add(role);
93                    }
94                }
95                else
96                {
97                    if (accountsRoles.Contains(role.id_account_role))
98                    {
99                        accountToUpdate.roles_accounts.Remove(role);
100                    }
101                }
102            } 
103        }
104	
105public class AssignedRoleData
106    {
107        public int RoleId { get; set; }
108        public string Name { get; set; }
109        public bool Assigned { get; set; }
110	
111<div class="editor-field">
112    <table>
113        <tr>
114            @{
115                int cnt = 0;
116
117                List<App_ERP1.ViewModels.AssignedRoleData> roles=ViewBag.roles;
118
119                foreach (var role in roles) {
120                    if (cnt++ % 3 == 0) {
121                        @:  </tr> <tr> 
122                    }
123                    @: <td>  
124                        <input type="checkbox" 
125                               name="selectedRoles" 
126                               value="@role.RoleId" 
127                               @(Html.Raw(role.Assigned ? "checked="checked"" : "")) /> 
128                        @role.RoleId @:  @role.Name
129                    @:</td>
130                }
131                @: </tr>
132            }
133
134    }
135}
136	
137for (i = 0; i< roles.Count, i++) {
138                    if (cnt++ % 3 == 0) {
139                        @:  </tr> <tr> 
140                    }
141                    @: <td>  
142                        <input type="checkbox" 
143                               name="selectedRoles[" + i + "]" 
144                               value="@role.RoleId" 
145                               @(Html.Raw(role.Assigned ? "checked="checked"" : "")) /> 
146                        @role.RoleId @:  @role.Name
147                    @:</td>
148                }
149                @: </tr>