DSIK_FILEZILLA/sikFtpClient/App.xaml

<Application x:Class="sikFtpClient.App"
             xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
             xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
             xmlns:local="clr-namespace:sikFtpClient.ViewModel"
             xmlns:viewmodel="clr-namespace:sikFtpClient.ViewModel"
             xmlns:view="clr-namespace:sikFtpClient.View"
             StartupUri="MainWindow.xaml">
    <Application.Resources>
        <DataTemplate DataType="{x:Type viewmodel:ConnectionViewModel}">
            <view:ConnectionView/>
        </DataTemplate>
        <DataTemplate DataType="{x:Type viewmodel:UploadViewModel}">
            <view:UploadView/>
        </DataTemplate>
        <local:MainViewModel x:Key="MainViewModel" />
    </Application.Resources>
</Application>