field value is not showing up

[kebele]

hi all,
I am using the below code to create a page where users can see the information and also i create a link for them to download a CSv format file.Everyting works fine except when i open the link to download the CSV file, I just only see the Column name not the values.It just only display the column name.I would appreciate if you point me where i made the mistake and how can i fix it. thanks again


<Script runat="server" language="VB">

Dim cmdc As OracleCommand
Dim drc As OracleDataReader
Dim oOracleConn As OracleConnection
Dim i As Integer
Dim filename As String
Dim sb As System.Text.StringBuilder
Dim StrSql As String

Sub page_load()
lblTime.Text = DateTime.Now.ToString()
Dim connectionString As String = ConnectionStrings("ConnectionString").ConnectionString
Dim oOracleConn As OracleConnection = New OracleConnection(connectionString)
oOracleConn.Open()

StrSql = "SELECT (SUBSTR( ITEM ,1,4)||'.'||SUBSTR(ITEM,5)) ""ITEM NUMBER"","
StrSql = StrSql & "IDESCR ""SHORT DESCRIPTION"", "
StrSql = StrSql & "IDESCRL ""LONG DESCRIPTION"", "
StrSql = StrSql & "IUNITS ""UNIT NAME"", FUNC_GET_UNIT_NAME(IUNITS) ""PLAN UNIT DESCRIPTION"""
StrSql = StrSql & "FROM ITEMLIST WHERE ISPECYR='01' AND IOBSELET='N' AND ITEM <> '2999509/00001'"

Dim cmd As OracleCommand = New OracleCommand(StrSql, oOracleConn)
drc = cmd.ExecuteReader()
gvEnglish.DataSource = drc
gvEnglish.DataBind()
filename = "MetricItemList.csv"
sb = New System.Text.StringBuilder

'Dim cmdc As OracleCommand = New OracleCommand(StrSql, oOracleConn)
'drc = cmdc.ExecuteReader()
End Sub

Sub Click(ByVal sender As System.Object, ByVal e As System.EventArgs)

'for field name
For i = 0 To drc.FieldCount - 1
If i < (drc.FieldCount - 1) Then
sb.Append(Chr(34) & drc.GetName(i) & Chr(34) & ",")
Else
sb.Append(Chr(34) & drc.GetName(i) & Chr(34) & vbCrLf)
End If
Next

''for field value
While drc.Read()
For i = 0 To drc.FieldCount - 1
If i < (drc.FieldCount - 1) Then
sb.Append(Chr(34) & drc.GetValue(i).ToString.Replace(Chr(34), Chr(34) & Chr(34)) & Chr(34) & ",")
Else
sb.Append(Chr(34) & drc.GetValue(i).ToString & Chr(34) & vbCrLf)
End If
Next
End While

drc.Close()
Response.ContentType = "Application/x-csv"
Response.AddHeader("content-disposition", "attachment;filename=""" & filename & """")
Response.Write(sb.ToString)
Response.End()

End Sub