C#VS2010访问SQL数据库

Question

private void button1_Click(object sender, EventArgs e)
{
string ConnectionString = "Server=(local);Integrated Security=SSPI;Database=student";
SqlConnection myconn = new SqlConnection(ConnectionString);
myconn.Open();
MessageBox.Show("连接成功！");
SqlConnection conn = new SqlConnection(ConnectionString);
SqlCommand cmd = new SqlCommand(Sql, conn);
SqlDataReader dr = cmd.ExecuteReader();
while (dr.Read())
{
Console.WriteLine(dr[字段].ToString());
}
}
访问SQL Server2008 student数据库中的学生表，请改一下代码

Answer 1

Sql和字段
要替换成你实际的变量。
给你代码不是照抄就行的，得看懂。