Реализовано отображение и редактирование элементов в UsersWindow

eCompanies/App.xaml.cs

@@ -27,7 +27,13 @@ namespace eCompanies
         public static ObservableCollection<Companies> getCompanies()
         {
             using (var db = new CompaniesDBContext())
-                return new ObservableCollection<Companies>(db.Companies.AsEnumerable<Companies>()); 
+                return new ObservableCollection<Companies>(db.Companies.AsEnumerable()); 
+        }
+
+        public static HashSet<Users> getUsers(int id)
+        {
+            using (var db = new CompaniesDBContext())
+                return new HashSet<Users>(db.Users.Where(b => b.CompanyId.Equals(id)));
         }
 
         public static void updateCompany(Companies c)

eCompanies/Contract.cs

@@ -9,7 +9,7 @@ namespace eCompanies
     public enum Status { NotReachedYet, Reached, Terminated }
     public class Contract
     {
-        private Companies c { get; set; }
+        private Companies c;
         public Contract (Companies c)
         {
             this.c = c;

eCompanies/MainWindow.xaml

@@ -18,7 +18,7 @@
     <Grid>  
         <DataGrid x:Name="companyGrid" HorizontalAlignment="Left" Height="354" Margin="10,55,0,0" VerticalAlignment="Top" Width="772" ItemsSource="{Binding}" AutoGenerateColumns="False" MouseDoubleClick="companyGrid_MouseDoubleClick">
             <DataGrid.Columns>
-                <DataGridTextColumn Header="ID"  Binding="{Binding CompanyId}" IsReadOnly="True"/>
+                <DataGridTextColumn Header="ID" Binding="{Binding CompanyId}" IsReadOnly="True"/>
                 <DataGridTextColumn Header="Название компании" Binding="{Binding Name}" Width="*"/>
                 <DataGridComboBoxColumn x:Name="ContractComboBox"  Header="Состояние контракта" 
                                         SelectedValueBinding="{Binding Path=contract.ContractStatusId}" 

eCompanies/UsersWindow.xaml

@@ -11,12 +11,12 @@
             <ColumnDefinition/>
             <ColumnDefinition Width="0*"/>
         </Grid.ColumnDefinitions>
-        <DataGrid x:Name="usersGrid" HorizontalAlignment="Left" Height="354" Margin="10,55,0,0" VerticalAlignment="Top" Width="772" ItemsSource="{Binding}" AutoGenerateColumns="False" MouseDoubleClick="usersGrid_MouseDoubleClick">
+        <DataGrid x:Name="usersGrid" HorizontalAlignment="Left" Height="354" Margin="10,55,0,0" VerticalAlignment="Top" Width="772" ItemsSource="{Binding}" AutoGenerateColumns="False" RowEditEnding="usersGrid_RowEditEnding" AddingNewItem="usersGrid_AddingNewItem">
             <DataGrid.Columns>
-                <DataGridTextColumn Header="ID"  Binding="{Binding UsersId}"/>
-                <DataGridTextColumn Header="Имя пользователя" Binding="{Binding Name}" />
-                <DataGridTextColumn Header="Логин" Binding="{Binding Login}" />
-                <DataGridTextColumn Header="Пароль" Binding="{Binding Password}" />
+                <DataGridTextColumn Header="ID" IsReadOnly="True" Binding="{Binding UserId}"/>
+                <DataGridTextColumn Header="Имя пользователя" Width="*" Binding="{Binding Name}" />
+                <DataGridTextColumn Header="Логин" Width="*" Binding="{Binding Login}" />
+                <DataGridTextColumn Header="Пароль" Width="*" Binding="{Binding Password}" />
             </DataGrid.Columns>
         </DataGrid>
         <TextBox x:Name="companyNameBox" HorizontalAlignment="Left" Height="40" Margin="10,10,0,0" TextWrapping="Wrap" Text="none" VerticalAlignment="Top" Width="470" FontSize="22"/>

eCompanies/UsersWindow.xaml.cs

@@ -25,9 +25,10 @@ namespace eCompanies
         {
             InitializeComponent();
             currentCompany = c;
+            currentCompany.Users = App.getUsers(currentCompany.CompanyId);
             companyNameBox.Text = c.Name;
             contractStatusComboBox.SelectedIndex = c.ContractStatus;
-            usersGrid.DataContext = new ObservableCollection<Users>(c.Users.AsEnumerable<Users>());
+            usersGrid.DataContext = new ObservableCollection<Users>(c.Users.AsEnumerable());
         }
 
         private void usersGrid_MouseDoubleClick(object sender, MouseButtonEventArgs e)
@@ -37,8 +38,25 @@ namespace eCompanies
         private void Window_Closing(object sender, System.ComponentModel.CancelEventArgs e)
         {
             MessageBoxResult mbr = MessageBox.Show("Вы закрываете окно с компанией. Хотите сохранить результаты?", "Сохранение изменений", MessageBoxButton.YesNo);
-            if (mbr == MessageBoxResult.Yes)
-                App.updateCompany(currentCompany);
+            if (mbr == MessageBoxResult.No)
+                return;
+            currentCompany.ContractStatus = contractStatusComboBox.SelectedIndex;
+            currentCompany.Name = companyNameBox.Text;
+            foreach (Users u in (ObservableCollection<Users>)usersGrid.DataContext)
+            {
+                u.CompanyId = currentCompany.CompanyId;
+                u.Company = currentCompany;
+                currentCompany.Users.Add(u);
+            }
+            App.updateCompany(currentCompany);
+        }
+
+        private void usersGrid_RowEditEnding(object sender, DataGridRowEditEndingEventArgs e)
+        {
+        }
+
+        private void usersGrid_AddingNewItem(object sender, AddingNewItemEventArgs e)
+        {
         }
     }
 }