MainView.xaml

<UserControl x:Class="SellBroCRMWPF.MainView"
             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:SellBroCRMWPF"
             mc:Ignorable="d" HorizontalAlignment="Stretch" VerticalAlignment="Stretch" d:DesignWidth="1338" d:DesignHeight="792">
</UserControl>