Hi,
With the code below, i get the error:
ExecuteReader: Connection property has not been initialized.
Description: An unhandled exception occurred during the execution of the
current web request. Please review the stack trace for more information
about the error and where it originated in the code.
Exception Details: System.InvalidO perationExcepti on: ExecuteReader:
Connection property has not been initialized.
Source Error:
Line 25: oConnection.Ope n()
Line 26: comd = New SqlCommand("sel ect naam,type from pc")
Line 27: dtreader = comd.ExecuteRea der
Line 28: x = 0
Line 29: If dtreader.HasRow s Then
Source File: D:\Inetpub\wwwr oot\aspnet\Begi n\Chapter07\acc ess2.aspx Line:
27
--------------------------------------------------------------
My code:
Dim oConnection As System.Data.Ole Db.OleDbConnect ion
oConnection = New System.Data.Ole Db.OleDbConnect ion()
Dim comd As SqlCommand
Dim dtreader As SqlDataReader
Dim x As Integer
Dim sConnectionStri ng As String
sConnectionStri ng = "Provider = Microsoft.Jet.O LEDB.4.0; Data Source
= d:\access\nemi. mdb"
oConnection.Con nectionString = sConnectionStri ng
oConnection.Ope n()
comd = New SqlCommand("sel ect name,type from pc")
dtreader = comd.ExecuteRea der
x = 0
If dtreader.HasRow s Then
While dtreader.Read
x = x + 1
Response.Write( dtreader.Item(" naam"))
Response.Write( "<br>")
End While
End If
Response.Write( x)
dtreader.Close( )
oConnection.Clo se()
Thanks
Phil
4  4066 
You need to assign the Connection oject to the Command object:
comd = New SqlCommand("sel ect name,type from pc", oConnection)
Hi, thanks for replying.
I forgot it indeed (i'm new to this).
But now, i get another error:
Compiler Error Message: BC30311: Value of type
'System.Data.Ol eDb.OleDbConnec tion' cannot be converted to
'System.Data.Sq lClient.SqlConn ection'.
Source Error:
Line 23: ' Ouverture de la connexion
Line 24: oConnection.Ope n()
Line 25: comd = New SqlCommand("sel ect name,type from
pc",oConnection )
Line 26: dtreader = comd.ExecuteRea der
Line 27: x = 0
Source File: D:\Inetpub\wwwr oot\aspnet\Begi n\Chapter07\acc ess2.aspx Line:
25
This is in the beginning of the code:
<%@ Page Language="VB" %>
<%@ import namespace="Syst em.Data"%>
<%@ import namespace="Syst em.Data.SqlClie nt"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dt d">
....
Thanks again
Phil
You can't use an OleDbConnection with an SqlCommand. You have to use the
objects that fit together.
OleDbConnection
OleDbCommand
OleDbDataReader
or
SqlConnection
SqlCommand
SqlDataReader
phil wrote: Hi, thanks for replying.
I forgot it indeed (i'm new to this).
But now, i get another error:
Compiler Error Message: BC30311: Value of type
'System.Data.Ol eDb.OleDbConnec tion' cannot be converted to
'System.Data.Sq lClient.SqlConn ection'.
Source Error:
Line 23: ' Ouverture de la connexion
Line 24: oConnection.Ope n()
Line 25: comd = New SqlCommand("sel ect name,type from
pc",oConnection )
Line 26: dtreader = comd.ExecuteRea der
Line 27: x = 0
Source File: D:\Inetpub\wwwr oot\aspnet\Begi n\Chapter07\acc ess2.aspx Line:
25
This is in the beginning of the code:
<%@ Page Language="VB" %>
<%@ import namespace="Syst em.Data"%>
<%@ import namespace="Syst em.Data.SqlClie nt"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dt d">
...
Thanks again
Phil
Yes, you are right ..
Thanks
"Göran Andersson" <gu***@guffa.co m> wrote in message
news:OR******** ******@TK2MSFTN GP03.phx.gbl... You can't use an OleDbConnection with an SqlCommand. You have to use the
objects that fit together.
OleDbConnection
OleDbCommand
OleDbDataReader
or
SqlConnection
SqlCommand
SqlDataReader
phil wrote: Hi, thanks for replying.
I forgot it indeed (i'm new to this).
But now, i get another error:
Compiler Error Message: BC30311: Value of type
'System.Data.Ol eDb.OleDbConnec tion' cannot be converted to
'System.Data.Sq lClient.SqlConn ection'.
Source Error:
Line 23: ' Ouverture de la connexion
Line 24: oConnection.Ope n()
Line 25: comd = New SqlCommand("sel ect name,type from
pc",oConnection )
Line 26: dtreader = comd.ExecuteRea der
Line 27: x = 0
Source File: D:\Inetpub\wwwr oot\aspnet\Begi n\Chapter07\acc ess2.aspx
Line: 25
This is in the beginning of the code:
<%@ Page Language="VB" %>
<%@ import namespace="Syst em.Data"%>
<%@ import namespace="Syst em.Data.SqlClie nt"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dt d">
...
Thanks again
Phil
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