public void add(string val, ref DGVcustom dgv)
        {
            DataRow dr = this.dt.NewRow();

            dr["ID"]    = ++this.id;
            dr["Valor"] = val;
            this.dt.Rows.Add(dr);
            dgv.FirstDisplayedScrollingRowIndex = int.Parse((this.id - 1).ToString());
        }
 public tabModel(ref DGVcustom DGV)
 {
     this.dt = new DataTable();
     this.dt.Columns.Add(new DataColumn("ID", typeof(string))
     {
         ReadOnly = true
     });
     this.dt.Columns.Add(new DataColumn("Valor", typeof(string))
     {
         ReadOnly = true
     });
     DGV.DataSource = this.dt;
 }