AvaloniaDB/TeacheresAndCourses/Views/AddCourse.axaml

<UserControl xmlns="https://github.com/avaloniaui"
             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"
             mc:Ignorable="d" d:DesignWidth="800" d:DesignHeight="450"
             x:Class="TeacheresAndCourses.AddCourse"
			 xmlns:vm="using:TeacheresAndCourses.ViewModels"
			 x:DataType="vm:AddCourseViewModel">
	<StackPanel Classes="addTeacherSP">
		<TextBlock Classes="addingTextFont">Добавить курс</TextBlock>
		<StackPanel Classes="oneLine">
			<TextBlock Classes="addingTextStyle2">Введите название курса</TextBlock>
			<TextBox Classes="inputTB" Text="{Binding CourseTitle}"></TextBox>
		</StackPanel>
		<StackPanel Classes="oneLine">
			<TextBlock Classes="addingTextStyle2">Введите часы курса</TextBlock>
			<TextBox Classes="inputTB" Text="{Binding CourseHours}"></TextBox>
		</StackPanel>
		<Button Classes="saveButton" Command="{Binding AddCourse}">Записать</Button>
		<Button Classes="saveButton" Command="{Binding ToMainPage}">На главную</Button>
	</StackPanel>
</UserControl>