Doesnt update... why?

Question

Hi!

I need to update... Its doesnt update datas.

This is my code:

 private void btnEditFunc_Click(object sender, EventArgs e)

        {

            Conn.Open();

            oleDbCmd.Connection = Conn;

            oleDbCmd.CommandText = "UPDATE worker SET name= '" + txtName.Text + "' WHERE code = " + txtCode.Text + ")'";

            

            oleDbCmd.ExecuteNonQuery();        

               

            Conn.Close();

        }