我在单层应用程序中忘记返回值了。
public int Studentid()
{
try
{
SqlConnection con = new SqlConnection(connectionStr);
SqlCommand cmd = new SqlCommand("SELECT s_id FROM student where name = + ('" + Request.QueryString.ToString() + "')", con);
con.Open();
SqlDataReader dr = null;
con.Open();
dr = cmd.ExecuteReader();
if (dr.Read())
{
//Want help hear how I return value
}
con.Close();
}
catch (Exception ex)
{
throw ex;
}
}
Request.QueryString.ToString
,我想返回 s_id。就这些了。谢谢。 - 4b0