c#中，连接数据库。把数据局显示在dataGridView1上怎么做，具体步骤是怎样的？？

SqlConnection cn =new SqlConnection(连接字符串);
SqlCommand cmd = new SqlCommand(查询语句);

cn.Open();
SqlDataReader dr = cmd.ExecuteReader();
dt = new DataTable();
dt.Load(dr);
cn.Close();
dataGridView1.DataSource = dt;

OleDbConnection conn = new OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data source=" + System.Windows.Forms.Application.StartupPath + "//ab.mdb"); conn.Open(); OleDbCommand command = new OleDbCommand(str, conn); OleDbDataAdapter da = new OleDbDataAdapter(command); DataSet dt = new DataSet(); da.Fill(dt,"WebUrl"); dataGridView1.DataSource = dt; dataGridView1.DataMember = "WebUrl";

//以上是access数据库的连接，如果是sql的换一下语句就可以了

先写链接类 与数据库连接 然后查找,进行绑定即可!

用ado就可以了

只要几句代码！