//SQL查询语句
public DataTable query(string sql)
{
DataTable dt=new DataTable();
string connString = "server=IP;uid=sa;pwd=;database=数据库名";
SqlConnection conn = new SqlConnection(connString);
SqlDataAdapter adapter = new SqlDataAdapter(sql,conn);
adapter.Fill(dt);
return dt;
}
//SQL非查询语句
public void non_query(string sql)
{
string connString = "server=IP;uid=sa;pwd=;database=数据库名";
SqlConnection conn = new SqlConnection(connString);
SqlCommand cmd = new SqlCommand(sql,conn);
conn.Open();
cmd.ExecuteNonQuery();
conn.Close();
}