得到DataGridView的选中行

            DataTable dt = new DataTable();
            dt.Columns.AddRange(new DataColumn[]...{
                new DataColumn("ID",Type.GetType("System.Int32")),
                 new DataColumn("Name",Type.GetType("System.String")),
            });
            for(int i=0;i<10;i++)
            ...{
                DataRow drNew = dt.NewRow();
                drNew["ID"] = i;
                drNew["Name"] = i.ToString();
                dt.Rows.Add(drNew);
            }
            this.dataGridView1.DataSource = dt;
            DataRowView dv = this.dataGridView1.CurrentRow.DataBoundItem as DataRowView;
            if (dv != null)
            ...{
                DataRow dr = dv.Row;
            }