private void btnAddNewPosition_Click(object sender, EventArgs e) { Form1.AddOrEdit = AddEditOrDelete.Add; switch (Form1.WindowIndex) { case WindowsStruct.MalfAdd: formAddPrice = new FormAddPrice(mainForm, this); formAddPrice.ShowDialog(); break; case WindowsStruct.SpareAdd: formAddPrice = new FormAddPrice(mainForm, this); formAddPrice.ShowDialog(); break; } }