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VC++ Ado Tutorial, VC++ Ado Sample, VC++ Ado
Example
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This is
consist of 2 classes.
-
CDyndb : This Class manages
connections
and
recordsets.
Recordsets
are organized as linked list (CList)
and you can access them using their
ids.
-
CDynRec : This class is the node to
populate for each recordsets.
Simply
follow these steps in order to use the
ADO
Example
and Sample
wrapper classes:
-
You need to add the following line
stdafx.h :
#import "c:\program files\common files\system\ado\msado21.tlb" no_namespace rename ("EOF", "adoEOF")
-
Call the OpenConn function
theApp.m_dyndb.OpenConn("driver=sql server;server=dogu;UID=sa;PWD=;database=dbtraining;");
-
Call OpenRec function
theApp.m_dyndb.OpenRec("select * from Courses");
-
Call GetFieldVal function to get the
value of the fields. This function
returns variant type. You can cast
it as usual way like
"short(variantdata);"
vardat=theApp.m_dyndb.GetFieldVal(0,2);
-
Call GetFieldType to get the type of
the field. "en" has a definition
like DataTypeEnum en; (see MSDN for
details)
en=theApp.m_dyndb.GetFieldType(0,2);
-
Call GetFieldCount to get the number
of the fields that selected in the
recordset.
-
Call GetFieldName to obtain the name
of the field.
To iterate
through a recordset, you can use the
m_pRecordSet member functions MoveXXX |
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E-XD++Visual
C++/ MFC Products
Overview