c＃插入值中不支持的异常

Question

我可能是瞎子或者是sm。

SqlConnection con = new SqlConnection(@"Data Source=(LocalDB)\MSSQLLocalDB;AttachDbFilename=C:\Users\Szymek\Desktop\Komunikator\Komunikator\Baza.mdf;Integrated Security=True");

private void button1_Click(object sender, EventArgs e)
{
    con.Open();
    String query = " INSERT INTO Uzytkownicy (imie, nazwisko, e-mail,login, haslo) VALUES ('"+ textBox1.Text + "','" +textBox2.Text + "','" + textBox3.Text + "','" + textBox4.Text + "','" + textBox5.Text + "')";

    SqlDataAdapter SDA = new SqlDataAdapter(query, con);
    SDA.SelectCommand.ExecuteNonQuery();

    con.Close();

    MessageBox.Show(" Zapisano ! ");

    this.Hide();
    Login move = new Login();
    move.ShowDialog();
}

我认为查询出错：

  

System.Data.SqlClient.SqlException：“' - '附近的语法不正确。”