private void frm_doc_diagnosis_Load(object sender, EventArgs e)
 {
     pat_id = int.Parse(GlobalVariable._Pat_id);
     cbo_doc_diagnosis.SelectedIndex        = 0;
     cbo_doc_diagnosis_detail.SelectedIndex = 0;
     this.dt.Columns.Add("លេខលំដាប់នៃធ្មេញ", typeof(int));
     this.dt.Columns.Add("ទីតាំងលំអិតនៃធ្មេញ", typeof(string));
     this.dt.Columns.Add("ស្ថានភាពធ្មេញ", typeof(string));
     this.dt.Columns.Add("ពត៌មានលំអិត", typeof(string));
     dgv_teeth.DataSource          = dt;
     dgv_teeth.AutoSizeColumnsMode = DataGridViewAutoSizeColumnsMode.Fill;
     dt1 = StoreProcedure.get_teeth(pat_id);
     foreach (DataRow row in dt1.Rows)
     {
         dgv_doc_diagnosis.Rows.Add(row[0], row[1], row[2], row[3]);
     }
 }