Как мне запустить этот метод класса?

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Я определил XAML-окно:

<pre><Window x:Class="latex_curriculum_vitae.MainWindow"

        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:latex_curriculum_vitae"

        mc:Ignorable="d"

        Title="Latex Curriculum Vitae" Height="450" Width="800">
    <Grid>
        <Label Content="Jobtitle of your application:" HorizontalAlignment="Left" Margin="64,52,0,0" VerticalAlignment="Top"/>
        <Label Content="Enter Company Name:" HorizontalAlignment="Left" Margin="64,83,0,0" VerticalAlignment="Top"/>
        <Label Content="Enter companies street:" HorizontalAlignment="Left" Margin="64,109,0,0" VerticalAlignment="Top" RenderTransformOrigin="0.52,-0.663"/>
        <Label Content="ZIP Code:" HorizontalAlignment="Left" Margin="64,135,0,0" VerticalAlignment="Top"/>
        <Label Content="City:" HorizontalAlignment="Left" Margin="475,135,0,0" VerticalAlignment="Top"/>
        <TextBox x:Name="txtJobtitle" HorizontalAlignment="Left" Margin="318,60,0,0" TextWrapping="Wrap" VerticalAlignment="Top" Width="428"/>
        <TextBox x:Name="txtCompanyName" HorizontalAlignment="Left" Margin="318,87,0,0" TextWrapping="Wrap" VerticalAlignment="Top" Width="428" RenderTransformOrigin="0.042,0.295"/>
        <TextBox x:Name="txtCompanyStreet" HorizontalAlignment="Left" Margin="318,113,0,0" TextWrapping="Wrap" VerticalAlignment="Top" Width="428" RenderTransformOrigin="0.517,-0.986"/>
        <TextBox x:Name="txtZIP" HorizontalAlignment="Left" Margin="318,139,0,0" TextWrapping="Wrap" VerticalAlignment="Top" Width="120"/>
        <TextBox x:Name="txtCity" HorizontalAlignment="Left" Margin="544,139,0,0" TextWrapping="Wrap" VerticalAlignment="Top" Width="202"/>
        <Separator HorizontalAlignment="Left" Margin="64,166,0,0" VerticalAlignment="Top" Height="25" Width="701" RenderTransformOrigin="0.501,1.041"/>
        <Label Content="About Company" HorizontalAlignment="Left" Margin="64,21,0,0" VerticalAlignment="Top" FontWeight="Bold"/>
        <Label Content="About Contact person" HorizontalAlignment="Left" Margin="64,191,0,0" VerticalAlignment="Top" FontWeight="Bold"/>
        <Label Content="Name:" HorizontalAlignment="Left" Margin="356,237,0,0" VerticalAlignment="Top" RenderTransformOrigin="0.655,0.05"/>
        <ComboBox x:Name="cboGender" HorizontalAlignment="Left" Margin="166,237,0,0" VerticalAlignment="Top" Width="120" RenderTransformOrigin="0.192,-0.613">
            <ComboBoxItem Content="Male"/>
            <ComboBoxItem Content="Female"/>
            <ComboBoxItem Content="Unknown"/>
        </ComboBox>
        <Label Content="Gender:" HorizontalAlignment="Left" Margin="64,235,0,0" VerticalAlignment="Top" RenderTransformOrigin="0.401,0.29" Width="97"/>
        <TextBox x:Name="txtContactName" HorizontalAlignment="Left" Margin="431,241,0,0" TextWrapping="Wrap" VerticalAlignment="Top" Width="315" RenderTransformOrigin="0.523,1.812"/>
        <Separator HorizontalAlignment="Left" Margin="64,268,0,0" VerticalAlignment="Top" Height="25" Width="701" RenderTransformOrigin="0.501,1.041"/>
        <Label Content="About Application" HorizontalAlignment="Left" Margin="64,293,0,0" VerticalAlignment="Top" RenderTransformOrigin="0.783,-0.287" FontWeight="Bold"/>
        <Label Content="URL:" HorizontalAlignment="Left" Margin="64,324,0,0" VerticalAlignment="Top" RenderTransformOrigin="-0.105,-0.441"/>
        <TextBox x:Name="txtURL" HorizontalAlignment="Left" Margin="166,328,0,0" TextWrapping="Wrap" VerticalAlignment="Top" Width="580"/>
        <Label Content="Emailaddress:" HorizontalAlignment="Left" Margin="64,355,0,0" VerticalAlignment="Top" RenderTransformOrigin="0.171,-0.634"/>
        <TextBox x:Name="txtEmail" HorizontalAlignment="Left" Margin="166,359,0,0" TextWrapping="Wrap" VerticalAlignment="Top" Width="266" RenderTransformOrigin="0.5,0.5">
            <TextBox.RenderTransform>
                <TransformGroup>
                    <ScaleTransform/>
                    <SkewTransform/>
                    <RotateTransform Angle="0.086"/>
                    <TranslateTransform/>
                </TransformGroup>
            </TextBox.RenderTransform>
        </TextBox>
        <Button x:Name="btnGenerate" Content="Generate" HorizontalAlignment="Left" Margin="549,384,0,0" VerticalAlignment="Top" Width="96"/>
        <Button x:Name="btnExit" Content="Exit" HorizontalAlignment="Left" Margin="669,384,0,0" VerticalAlignment="Top" Width="96"/>


    </Grid>
</Window>

Также у меня есть класс "пользователь":

class User
    {
        private String firstname;
        private String familyname;
        private String mystreet;
        private String myCity;
        private String myphone;
        private String myemail;
        private String myblog;

        public User()
        {


            firstname = ConfigurationManager.AppSettings.Get("firstname");
            familyname = ConfigurationManager.AppSettings.Get("familyname");
            mystreet = ConfigurationManager.AppSettings.Get("mystreet");
            myCity = ConfigurationManager.AppSettings.Get("mycity");
            myphone = ConfigurationManager.AppSettings.Get("myphone");
            myemail = ConfigurationManager.AppSettings.Get("myemail");
            myblog = ConfigurationManager.AppSettings.Get("myblog");

            DebugSettings();
            UserFile();
        }

        private void UserFile()
        {
            string[] lines = { "\\def\\firstname{" + firstname + "}", "\\def\\familyname{" + familyname + "}" , "\\def\\mystreet{" + mystreet + "}", "\\def\\mycity{" + myCity + "}", "\\def\\myphone{" + myphone + "}", "\\def\\myemail{" + myemail + "}", "\\def\\myblog{" + myblog + "}" };

            // Set a variable to the Documents path.
            string appDataPath =
              Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData);

            // Write the string array to a new file named "WriteLines.txt".
            using (StreamWriter outputFile = new StreamWriter(Path.Combine(appDataPath, "personal_data.tex")))
            {
                foreach (string line in lines)
                    outputFile.WriteLine(line);
            }

        }

        private void DebugSettings()
        {
            string[] settings = { firstname, familyname, mystreet, myCity, myphone, myemail, myblog };

            foreach (string setting in settings)
                Console.WriteLine(setting);
        }

    }

В главном окне я использую:

private void btnGenerate_Click(object sender, EventArgs e)
        {
            User myuser = new User();
            
        }

В общем, я ожидаю, что после нажатия на кнопку "btnGenerate" он запускает методы DebugSettings и UserFile.

Но в настоящее время он выглядит так, как будто не выводит настройки и не сохраняет файл.

Я что-нибудь пропустил?

Что я уже пробовал:

Тоже погуглил, но ничего не нашел :-(

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