UP/HelpHelf/Pages/ChangePassword.xaml

<Page x:Class="HelpHelf.Pages.ChangePassword"
      xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
      xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
      xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" 
      xmlns:d="http://schemas.microsoft.com/expression/blend/2008" 
      xmlns:local="clr-namespace:HelpHelf.Pages"
      mc:Ignorable="d" 
      d:DesignHeight="450" d:DesignWidth="800"
      Title="ChangePassword">

    <Grid>
        <StackPanel VerticalAlignment="Center">
            <TextBlock FontFamily="Calibri"
                       Foreground="#0B61A4" FontWeight="Bold" FontSize="35"
                       HorizontalAlignment="Center" Text="Смена пароля"/>
            <GroupBox Margin="0,10,0,0" FontFamily="Calibri" 
                      FontSize="20" Width="300" BorderBrush="#0B61A4"
                      BorderThickness="3" Header="Старый пароль">
                <PasswordBox PasswordChar="*" Padding="2"
                             Margin="5" Name="pswOldPassword"/>
            </GroupBox>
            <GroupBox Margin="0,10,0,0" FontFamily="Calibri" 
                      FontSize="20" Width="300" BorderBrush="#0B61A4"
                      BorderThickness="3" Header="Новый пароль">
                <PasswordBox PasswordChar="*" Padding="2"
                             Margin="5" Name="pswNewPassword"/>
            </GroupBox>
            <GroupBox Margin="0,10,0,0" FontFamily="Calibri" 
                      FontSize="20" Width="300" BorderBrush="#0B61A4"
                      BorderThickness="3" Header="Повтор пароля">
                <PasswordBox PasswordChar="*" Padding="2"
                             Margin="5" Name="pswRepeatePassword"/>
            </GroupBox>
            <StackPanel Margin="0,20,0,0" 
                        HorizontalAlignment="Center" Orientation="Horizontal">
                <Button Click="btnSave_Click" Background="White" Padding="5"
                        BorderBrush="#0B61A4" BorderThickness="3"
                        FontFamily="Calibri" FontSize="20" Margin="0,0,5,0"
                        Name="btnSave" Width="160" Content="Сохранить" Cursor="Hand"/>
                <Button Click="btnCancel_Click" Background="White" Padding="5"
                        BorderBrush="#0B61A4" BorderThickness="3"
                        FontFamily="Calibri" FontSize="20" Margin="5,0,0,0"
                        Name="btnCancel" Width="160" Content="Отмена" Cursor="Hand"/>
            </StackPanel>
        </StackPanel>
    </Grid>
</Page>