Compare Two Access Databases With Two Fields Each And Write The Results To A Third Access Database?

Apr 22, 2010

I am using the code shown below to compare two Access databases with two fields each and write the results to a third Access database. I am getting an error at the "Do While DMReader02.Read = True" line: "Invalid attempt to call Read when reader is closed." Why would the reader be closed at this point if I am using different DataReaders in the two loops?

Imports System.Data.OleDb
Partial
Class Form1

[code]....

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Try
ds.Tables(
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[code]....

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[Code]......

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[code]
Public Function Incomming_Number(ByVal strNum As String) As String
Dim oConnect As New OleDbConnection
Dim sql As OleDbCommand

[code]....

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Code:

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Parameters:

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Public Class frmMicroland
Private Sub frmMicroland_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load

[Code].....

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Private Sub MDIParent_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
Try

[Code].....

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[Code]...

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[Code]...

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[Code]...

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Dim ADOXcatalog As New ADOX.Catalog
Dim ADOXtable As New ADOX.Table
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[Code]......

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VB.net
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[code].....

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[code].....

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following is the code I have used.

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[Code].....

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Public Class Form1
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[code]....

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