DataGridView一些总结

DataTable dt = (DataTable)this.dataGridView1.DataSource;   //数据集转化为DataTable
dataGridView1.Rows.Count           //数量统计
int ccc = dataGridView1.CurrentCell.RowIndex;//当前行下标
string  smaterialNoFinish = dataGridView1[0, ccc].Value.ToString();// 第ccc行第一列的值  
string[] str = new string[dataGridView1.Rows.Count];

   string sql  = "   select .....";
                try
                {
                    SqlConnection Sqlconn = new SqlConnection(connStr);
                    SqlCommand cmd = new SqlCommand(sql, Sqlconn);
                    Sqlconn.Open();
                    DataSet ds = new DataSet();
                    SqlDataAdapter da = new SqlDataAdapter(sql, Sqlconn);
                    da.Fill(ds);
                    dataGridView1.DataSource = ds.Tables[0];
                    Sqlconn.Close();
                }
                catch (Exception ee)
                {
                    MessageBox.Show(ee.Message, "查找失败", MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
                }