NextRow

[hodnagy]

Why do not see the next record in this sample? Only the first!

Public Sub Mutat() Handles MyBase.Load
connectionStr = "Driver={Driver do Microsoft dBase (*.dbf)};" & _
"collatingsequence=ASCII;defaultdir=C:\Syn;" & _
"deleted=0;driverid=21;fil=dBase III;filedsn=C:\Syn\PROBA.DBF.dsn;" & _
"maxbuffersize=2048;maxscanrows=8;pagetimeout=5;safetransactions=0 ;" & _
"statistics=0;threads=3;uid=admin;usercommitsync=Yes"

readSQL = "SELECT 'knev','vnev' FROM C:\Syn\PROBA.DBF"

Using connection As New OdbcConnection(connectionStr)
Dim command As New OdbcCommand(readSQL, connection)
Dim odr As OdbcDataReader
Dim txt As String
Try
connection.Open()
odr = command.ExecuteReader
While odr.Read()
txt = odr(0).ToString & odr(1).ToString
MsgBox(txt)
End While
Catch ex As Exception
MsgBox(ex.Message)
End Try
MsgBox("Open")
End Using
End Sub

Help me!

István

[kareninstructor]

Try pushing the data to a DataTable as follows. The Data Source points to the path where the DBF exists and the SELECT statement points to the physical DBF table name. If that works then go back to a DataReader.

If IO.File.Exists("C:\Data\TEST.DBF") Then
    Dim cn As New OleDb.OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;" & _
                                        "Data Source=C:\Data;Extended Properties=dBase III")
    cn.Open()

    Dim cmd As New OleDb.OleDbCommand("SELECT * FROM TEST")
    cmd.Connection = cn
    Dim dt As New DataTable
    dt.Load(cmd.ExecuteReader)

    DataGridView1.DataSource = dt
End If

So if you had three DBF files under C:\Data then the following code would show three items in the ListBox.

Dim cn As New OleDb.OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;" & _
                                    "Data Source=C:\Data;Extended Properties=dBase III")
cn.Open()

Dim DatabaseSchema As New DataTable

DatabaseSchema = cn.GetOleDbSchemaTable(OleDb.OleDbSchemaGuid.Tables, _
                                                    New Object() {Nothing, Nothing, Nothing, "TABLE"})

ListBox1.DisplayMember = "TABLE_NAME"
ListBox1.DataSource = DatabaseSchema

[hodnagy]

The first code is working well. Thanks for You!
The secound no. See "NextRecord 2"

[kareninstructor]

The secound no. See "NextRecord 2"

Either the samples work or they do not work, care to explain in detail.