Reset controls in Windows form

foreach (var item in this.Controls)
            {
                // Reset Textbox
                if (item.GetType().Equals(typeof(TextBox)))
                {
                    TextBox t = item as TextBox;
                    t.Text = string.Empty;
                }

                // Reset Combobox
                if (item.GetType().Equals(typeof(ComboBox)))
                {
                    ComboBox c = item as ComboBox;
                    c.SelectedIndex = -1;
                    c.ResetText();
                }

                // Reset RadioButton
                if (item.GetType().Equals(typeof(RadioButton)))
                {
                    RadioButton r = item as RadioButton;
                    r.Checked = false;
                }

                // Reset CheckedListBox
                if (item.GetType().Equals(typeof(CheckedListBox)))
                {
                    CheckedListBox cl = item as CheckedListBox;

                    foreach (int i in cl.CheckedIndices)
                    {
                        cl.SetItemCheckState(i, CheckState.Unchecked);
                    }
                }
            }