Removing dynamic controls

I have dynamically generated controls on the panels and i have also generated a button for removing the controls,
controls are on a line code is,

int c = 0;
        private void button1_Click(object sender, EventArgs e)
        {
            int v;
            v = c++;
            panel1.VerticalScroll.Value = VerticalScroll.Minimum;
            ComboBox combo = new ComboBox();
            combo.Name = "combobox" + v ;
            combo.Location = new Point(30, 5 + (30 * v));

            ComboBox combo2 = new ComboBox();
            combo2.Name = "combobox2" + v ;
            combo2.Location = new Point(170, 5 + (30 * v));

            TextBox txt = new TextBox();
            txt.Name = "txtbx" + v;
            txt.Location = new Point(300, 5 + (30 * v));

            TextBox txt2 = new TextBox();
            txt2.Name = "txtbx2" + v;
            txt2.Location = new Point(450, 5 + (30 * v));

            TextBox txt3 = new TextBox();
            txt3.Name = "txtbx3" + v;
            txt3.Location = new Point(600, 5 + (30 * v));

            Button btn = new Button();
            btn.Name = "btn" + v;
            btn.Text = "Remove";
            btn.Location = new Point(750, 5 + (30 * v));



            panel1.Controls.Add(combo);
            panel1.Controls.Add(btn);
            panel1.Controls.Add(txt);
            panel1.Controls.Add(combo2);
            panel1.Controls.Add(txt2);
            panel1.Controls.Add(txt3);
            btn.Click += new EventHandler(btn_Click);
          
        }
        private void btn_Click(object sender, EventArgs e)
        {
            
// what i have to write here for removing only the textbox and combobox and  button itself to be removed only the controls which are  aside the button

        }

what i have to write in the button click event for removing only the textbox and combobox and button itself to be removed the controls which are aside the button other line controls should not be effected by that,

Tags: C#