Could someone please post a sample C# code for iterating the detail records ("OE0500") for a specific order?

Stephen Smith has instructions to "Set detail key into the detail view." - but not sure how to interpret this.

After composing my views, I tried this code:

oeHeader.Cancel();
oeHeader.Init();
oeHeader.Fields.FieldByName("ORDNUMBER").SetValue("ORD00000039", false);
oeHeader.Order = 1;
oeHeader.Read(false);

bool headerExists = oeHeader.Exists;  //Header Record Found

oeDetail.Fields.FieldByName("LINENUM").SetValue("1", false);  //LINENUM appears to be the primary key
oeDetail.Read(false); 

bool DetailExists = oeHeader.Exists;  //Detail Record Not Found??