C# видимость TextBox

[Geometridae]

Доброго времени суток. Помогите разобраться в следующем:
Пишу такой код:

public Form1()
        {
TextBox Partizip2 = new TextBox();
            TextBox Proverka5 = new TextBox();
            Partizip2.Visible = false;
            Proverka5.Visible = false;
            Partizip2.Size = new Size(158, 53);
            Proverka5.Size = new Size(158, 53);
            Partizip2.Location = new Point(646, 37);
            Proverka5.Location = new Point(646, 138);
            Partizip2.Multiline = true;
            Proverka5.Multiline = true;
            this.Controls.Add(Partizip2);
            this.Controls.Add(Proverka5);

            Partizip2.KeyPress += new KeyPressEventHandler(Partizip2_KeyPress);
            Proverka5.KeyPress += new KeyPressEventHandler(Proverka5_KeyPress);
           
            InitializeComponent();
}
 void Partizip2_KeyPress(object sender, KeyPressEventArgs e)
    {}



            void Proverka5_KeyPress(object sender, KeyPressEventArgs e)
            { }

Пытаюсь в обработчик public void radioButton2_CheckedChanged(object sender, EventArgs e)
вставить строчку:
Partizip2.Visible = false;
Proverka5.Visible = false;
Получаю ошибку:
Error 1 The name 'Partizip2' does not exist in the current context
Вопрос как создать эти TextBox-ы чтобы можно было изменять Visible в radioButton2_CheckedChanged. Спасибо

[GetMax]

Как то так

 public partial class Form1 : Form
    {
        TextBox Partizip2 = new TextBox();
        TextBox Proverka5 = new TextBox();
           
        public Form1()
        {
         
            InitializeComponent();
        }

        void Partizip2_KeyPress(object sender, KeyPressEventArgs e)
        { }
        void Proverka5_KeyPress(object sender, KeyPressEventArgs e)
        { }

       

        private void Form1_Load(object sender, EventArgs e)
        {
           
            Proverka5.Visible = false;
            Partizip2.Visible = false;
            Partizip2.Size = new Size(158, 53);
            Proverka5.Size = new Size(158, 53);
            Partizip2.Location = new Point(90, 37);
            Proverka5.Location = new Point(90, 138);
            Partizip2.Multiline = true;
            Proverka5.Multiline = true;
            this.Controls.Add(Partizip2);
            this.Controls.Add(Proverka5);
            Partizip2.KeyPress += new KeyPressEventHandler(Partizip2_KeyPress);
            Proverka5.KeyPress += new KeyPressEventHandler(Proverka5_KeyPress);
            radioButton1.Checked = true;
        }
        private void radioButton1_Click(object sender, EventArgs e)
        {
            if (radioButton1.Checked == false) radioButton1.Checked = true;
            else
            if (radioButton1.Checked == true) radioButton1.Checked = false;
        }

        private void radioButton1_CheckedChanged(object sender, EventArgs e)
        {
            if (radioButton1.Checked == true)
            {
                Partizip2.Visible = true;
                Proverka5.Visible = true;
            }
            else
            {
                Partizip2.Visible = false;
                Proverka5.Visible = false;
            }
        } 
    }

[Geometridae]

Сообщение от GetMax

Как то так

 public partial class Form1 : Form
    {
        TextBox Partizip2 = new TextBox();
        TextBox Proverka5 = new TextBox();
           
        public Form1()
        {
         
            InitializeComponent();
        }

        void Partizip2_KeyPress(object sender, KeyPressEventArgs e)
        { }
        void Proverka5_KeyPress(object sender, KeyPressEventArgs e)
        { }

       

        private void Form1_Load(object sender, EventArgs e)
        {
           
            Proverka5.Visible = false;
            Partizip2.Visible = false;
            Partizip2.Size = new Size(158, 53);
            Proverka5.Size = new Size(158, 53);
            Partizip2.Location = new Point(90, 37);
            Proverka5.Location = new Point(90, 138);
            Partizip2.Multiline = true;
            Proverka5.Multiline = true;
            this.Controls.Add(Partizip2);
            this.Controls.Add(Proverka5);
            Partizip2.KeyPress += new KeyPressEventHandler(Partizip2_KeyPress);
            Proverka5.KeyPress += new KeyPressEventHandler(Proverka5_KeyPress);
            radioButton1.Checked = true;
        }
        private void radioButton1_Click(object sender, EventArgs e)
        {
            if (radioButton1.Checked == false) radioButton1.Checked = true;
            else
            if (radioButton1.Checked == true) radioButton1.Checked = false;
        }

        private void radioButton1_CheckedChanged(object sender, EventArgs e)
        {
            if (radioButton1.Checked == true)
            {
                Partizip2.Visible = true;
                Proverka5.Visible = true;
            }
            else
            {
                Partizip2.Visible = false;
                Proverka5.Visible = false;
            }
        } 
    }

Большое спасибо!!! Всё получилось.