Input.xaml

<Window x:Class="AudioScheduler.Input"
        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:AudioScheduler"
        mc:Ignorable="d"
        ResizeMode="NoResize"
        WindowStartupLocation="CenterOwner"
        Title="Input"
        Height="160"
        Width="300">
    <StackPanel Orientation="Vertical">
        <TextBlock Name="TextBlock"
                   Margin="10" />
        <TextBox Name="TextBox"
                 Margin="10" />
        <UniformGrid>
            <Button Content="Cancel"
                    Click="Cancel"
                    Margin="10" />
            <Button Content="OK"
                    Click="Submit"
                    Margin="10" />
        </UniformGrid>
    </StackPanel>
</Window>