namespace JinXiaoCun{    public partial class frmAddCustomer : Form    {        public frmAddCustomer()        {            InitializeComponent();        }        private void btnAddCustomer_Click(object sender, EventArgs e)        {            //insert into customer values('Cu01','陈工','男','13715687896')            string cusId = this.txtCusId.Text.Trim();            string cusName = this.txtCusName.Text.Trim();            string cusSex = this.cmbCusSex.Text;            string cusPhone = this.txtCusPhone.Text.Trim();            string strsql = "insert into customer values('" + cusId + "','" + cusName + "','" + cusSex + "','" + cusPhone + "')";            string conString = "Server=.;database=JinXiaoCun;uid=sa;pwd=sasa";            SqlConnection con = new SqlConnection(conString);            con.Open();            SqlCommand cmd = new SqlCommand(strsql, con);            cmd.ExecuteNonQuery();            con.Close();            this.txtCusId.Text = "";            this.txtCusName.Text = "";            this.cmbCusSex.Text = "";            this.txtCusPhone.Text = "";            MessageBox.Show("添加成功");                    }    }}