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A Sample Silverlight 4 Application Using MEF, MVVM, and WCF RIA Services - Part 1

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7 Jul 2011CPOL9 min read 2.1M   30.9K   298  
Part 1 of a series describing the creation of a Silverlight business application using MEF, MVVM Light, and WCF RIA Services.
<UserControl x:Class="IssueVision.Client.UserMaintenance"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    xmlns:cmd="clr-namespace:GalaSoft.MvvmLight.Command;assembly=GalaSoft.MvvmLight.Extras.SL4"
    xmlns:dat="clr-namespace:System.Windows.Controls;assembly=System.Windows.Controls.Data.Input"
    xmlns:common="clr-namespace:IssueVision.Common;assembly=IssueVision.Common"
    Loaded="UserControl_Loaded" Unloaded="UserControl_Unloaded"
    mc:Ignorable="d" d:DesignWidth="640" d:DesignHeight="480">
    
    <UserControl.Resources>
        <common:BooleanToVisibilityConverter x:Key="booleanToVisibilityConverter"/>
    </UserControl.Resources>
    
    <Grid x:Name="LayoutRoot">
        <Grid.RowDefinitions>
            <RowDefinition Height="1*" />
            <RowDefinition Height="Auto" />
            <RowDefinition Height="Auto" />
        </Grid.RowDefinitions>
        <ScrollViewer Grid.Row="0" Grid.Column="0"
                      VerticalScrollBarVisibility="Auto" HorizontalScrollBarVisibility="Disabled">
            <Grid>
                <Grid.RowDefinitions>
                    <RowDefinition Height="Auto" />
                    <RowDefinition Height="Auto" />
                    <RowDefinition Height="Auto" />
                    <RowDefinition Height="Auto" />
                    <RowDefinition Height="Auto" />
                    <RowDefinition Height="Auto" />
                </Grid.RowDefinitions>
                <Grid.ColumnDefinitions>
                    <ColumnDefinition Width="Auto" />
                    <ColumnDefinition Width="*" />
                    <ColumnDefinition Width="Auto" />
                    <ColumnDefinition Width="*" />
                </Grid.ColumnDefinitions>
                <TextBlock Grid.Row="0" Grid.Column="0" Grid.ColumnSpan="4"
                           FontWeight="Bold" Margin="4" 
                           Text="User Info" />
                <TextBlock Grid.Row="1" Grid.Column="0"
                           VerticalAlignment="Center" Margin="4" 
                           Text="User name" />
                <TextBox x:Name="userNameTextBox" Grid.Row="1" Grid.Column="1"
                         Margin="4" MinHeight="25"
                         Visibility="{Binding Path=IsAddUser, Mode=OneWay, 
                                            Converter={StaticResource booleanToVisibilityConverter}}"
                         Text="{Binding Path=CurrentUser.Name, Mode=TwoWay,
                                     ValidatesOnExceptions=True, NotifyOnValidationError=True}"/>
                <ComboBox x:Name="comboBox_UserName" Grid.Row="1" Grid.Column="1" 
                          Margin="4" MinHeight="25"
                          Visibility="{Binding Path=IsUpdateUser, Mode=OneWay, 
                                             Converter={StaticResource booleanToVisibilityConverter}}"
                          ItemsSource="{Binding Path=AllUsersSource.View}"
                          SelectedItem="{Binding Path=CurrentUser, Mode=OneWay, ValidatesOnNotifyDataErrors=False}">
                    <ComboBox.ItemTemplate>
                        <DataTemplate>
                            <StackPanel>
                                <TextBlock Text="{Binding Path=DisplayName, ValidatesOnNotifyDataErrors=False}" />
                            </StackPanel>
                        </DataTemplate>
                    </ComboBox.ItemTemplate>
                </ComboBox>
                <TextBlock Grid.Row="2" Grid.Column="0"
                           VerticalAlignment="Center" Margin="4" 
                           Text="Email" />
                <TextBox x:Name="emailTextBox" Grid.Row="2" Grid.Column="1"
                         Margin="4" MinHeight="25"
                         Text="{Binding Path=CurrentUser.Email, Mode=TwoWay,
                                ValidatesOnExceptions=True, NotifyOnValidationError=True}"/>
                <TextBlock Grid.Row="1" Grid.Column="2"
                           VerticalAlignment="Center" Margin="4" 
                           Text="First name" />
                <TextBox x:Name="firstNameTextBox" Grid.Row="1" Grid.Column="3"
                         Margin="4" MinHeight="25"
                         Text="{Binding Path=CurrentUser.FirstName, Mode=TwoWay,
                                ValidatesOnExceptions=True, NotifyOnValidationError=True}"/>
                <TextBlock Grid.Row="2" Grid.Column="2"
                           VerticalAlignment="Center" Margin="4" 
                           Text="Last name" />
                <TextBox x:Name="lastNameTextBox" Grid.Row="2" Grid.Column="3"
                         Margin="4" MinHeight="25"
                         Text="{Binding Path=CurrentUser.LastName, Mode=TwoWay,
                                ValidatesOnExceptions=True, NotifyOnValidationError=True}"/>
                <TextBlock Grid.Row="3" Grid.Column="0" Grid.ColumnSpan="4"
                           FontWeight="Bold" Margin="4" 
                           Text="Security Info" />
                <TextBlock Grid.Row="4" Grid.Column="0"
                           VerticalAlignment="Center" Margin="4" 
                           Text="New Password" />
                <TextBlock x:Name="actualNewPasswordTextBlock"
                           Grid.Row="4" Grid.Column="1"
                           Margin="4" Height="25"
                           Text="{Binding Path=CurrentUser.ActualNewPassword, Mode=TwoWay,
                                       ValidatesOnNotifyDataErrors=False}"
                           Visibility="Collapsed"/>
                <PasswordBox x:Name="newPasswordPasswordBox"
                             Grid.Row="4" Grid.Column="1"
                             Margin="4" MinHeight="25"
                             Password="{Binding Path=CurrentUser.NewPassword, Mode=TwoWay,
                                        ValidatesOnExceptions=True, NotifyOnValidationError=True}"
                             PasswordChanged="newPasswordPasswordBox_PasswordChanged" />
                <StackPanel Grid.Row="5" Grid.Column="0">
                    <TextBlock Text="Confirm new" Margin="4,4,4,0" />
                    <TextBlock Text="password" Margin="4,0,4,4" />
                </StackPanel>
                <PasswordBox x:Name="newPasswordConfirmationPasswordBox" Grid.Row="5" Grid.Column="1"
                             Margin="4" Height="25"
                             Password="{Binding Path=CurrentUser.NewPasswordConfirmation, Mode=TwoWay,
                                                  ValidatesOnExceptions=True, NotifyOnValidationError=True}"/>
                <TextBlock Grid.Row="4" Grid.Column="2"
                           VerticalAlignment="Center" Margin="4" 
                           Text="User type" />
                <ComboBox Grid.Row="4" Grid.Column="3" 
                          Margin="4" MinHeight="25"
                          ItemsSource="{Binding Path=UserTypeEntries}"
                          SelectedItem="{Binding Path=CurrentUser.DisplayUserType, Mode=TwoWay,
                                                     ValidatesOnNotifyDataErrors=False}"/>
            </Grid>
        </ScrollViewer>
        <dat:ValidationSummary Grid.Row="1" Grid.Column="0"
                               Target="{Binding ElementName=LayoutRoot}" />
        <Button Grid.Row="2" Grid.Column="0"
                VerticalAlignment="Top" HorizontalAlignment="Right" 
                Width="75" Height="23" Margin="0,5,248,5" 
                Content="Add User"
                Command="{Binding Path=AddUserCommand}"/>
        <Button Grid.Row="2" Grid.Column="0"
                VerticalAlignment="Top" HorizontalAlignment="Right" 
                Width="75" Height="23" Margin="0,5,167,5" 
                Content="Delete User"
                Command="{Binding Path=RemoveUserCommand}"
                CommandParameter="{Binding SelectedItem, ElementName=comboBox_UserName, ValidatesOnNotifyDataErrors=False}"/>
        <Button Grid.Row="2" Grid.Column="0"
                VerticalAlignment="Top" HorizontalAlignment="Right" 
                Width="75" Height="23" Margin="0,5,86,5" 
                Content="Save"
                Command="{Binding Path=SubmitChangeCommand}"/>
        <Button  Grid.Row="2" Grid.Column="0"
                 VerticalAlignment="Top" HorizontalAlignment="Right"
                 Width="75" Height="23" Margin="0,5,5,5"
                 Content="Cancel"
                Command="{Binding Path=CancelChangeCommand}"/>
    </Grid>
</UserControl>

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License

This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)


Written By
Software Developer (Senior)
United States United States
Weidong has been an information system professional since 1990. He has a Master's degree in Computer Science, and is currently a MCSD .NET

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