dataGridView1.Rows.Add(5);

------解决方案--------------------

绑定前向DataTable中添加5个空行

------解决方案--------------------


C# code
                    DataRow dr;
                    for (int i = 0; i < 5; i++)
                    {
                        dr = yourTable.NewRow();
                        yourTable.Rows.Add(dr);
                    }                    
                    dataGridView1.DataSource = yourTable;