CopyCenter/CopyCenter/ClientsWindow.xaml

<Window x:Class="CopyCenter.ClientsWindow"
        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:local="clr-namespace:CopyCenter"
        mc:Ignorable="d"
        Title="Клиенты" Height="450" Width="800" WindowStartupLocation="CenterScreen" Loaded="Window_Loaded">
    <Grid>
        <DataGrid Name="ClientsList" AutoGenerateColumns="False" Margin="0,0,0,133">
            <DataGrid.Columns>
                <DataGridTextColumn Header="ID" Width="*" Binding="{Binding idClient}"></DataGridTextColumn>
                <DataGridTextColumn Header="Наименование" Width="*" Binding="{Binding NameClient}"></DataGridTextColumn>
                <DataGridTextColumn Header="Тип клиента" Width="*" Binding="{Binding TypeClient}"></DataGridTextColumn>
            </DataGrid.Columns>
        </DataGrid>
        <Button HorizontalAlignment="Right" Margin="0,369,10,0" VerticalAlignment="Top" Width="45" Click="Exit_Click" Height="40">
            <StackPanel>
                <Image Source ="edit_redo.png" Height="40" Width="69"/>
            </StackPanel>
        </Button>
        <Button Content="Добавить" HorizontalAlignment="Left" Margin="482,311,0,0" VerticalAlignment="Top" Width="100" Height="40" Click="Add" Foreground="White"/>
        <Button Content="Удалить" HorizontalAlignment="Left" Margin="587,311,0,0" VerticalAlignment="Top" Width="100" Height="40" Click="Delete" Foreground="White"/>
        <Button Content="Обновить" HorizontalAlignment="Left" Margin="535,351,0,0" VerticalAlignment="Top" Width="100" Height="40" Click="Update" Foreground="White"/>
        <TextBox Name="Name" HorizontalAlignment="Left" Height="31" Margin="205,339,0,0" TextWrapping="Wrap" VerticalAlignment="Top" Width="146"/>
        <TextBox Name="TypeClient" HorizontalAlignment="Left" Height="34" Margin="205,375,0,0" TextWrapping="Wrap" VerticalAlignment="Top" Width="146"/>
        <TextBlock Margin="74,339,624,0" TextWrapping="Wrap" Text="Наименование" VerticalAlignment="Top" Height="31" Width="94"/>
        <TextBlock Margin="74,375,592,0"><Run Text="Тип клиента "/><LineBreak/><Run Text="(юр. лицо / физ. лицо)"/></TextBlock>
        <TextBox Name="ID" HorizontalAlignment="Left" Height="31" Margin="205,303,0,0" TextWrapping="Wrap" VerticalAlignment="Top" Width="146"/>
        <TextBlock Margin="74,303,624,0" TextWrapping="Wrap" Text="ID" VerticalAlignment="Top" Height="31" Width="94"/>

    </Grid>
</Window>