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i was check it in txb_TextChanged() function for this field . if txb.text="" then txb.text="0"

Sorry , i was sick about few days :-( Now i was try to insert my dataset into arch.mdb (unsuccess) then i was try to insert datatable as you write (unsuccess) i use transaction ,but it still not work . i will thankful if you send me a part of your code ,where you insert datatable into access...

Thanks to all . The first part is comlete . This VB.NET code checks if arch.mdb already exist . If not - creates new arch.mdb and delete all rows from all tables . ' this function execute sql non query command - str ProtectedSub ExecuteCommand(ByVal c As System.Data.OleDb.OleDbCommand, ByVal...

Oh ,no . It is not so complicated . I have source.mdb (this file contain all data base) , and I need to rename this file and copy it to same location . At end it will be 2 access files in same directory : source.mdb and archiv.mdb . They are equal , just have different names . How I can do it plz ?

Hi , I am started to work with OleDb objects (VB.net) . Please ,let me know any good free web resources about : "How to work with access DataBase from vb.net environment" the questions are : 1. i am working with windows application and trying to create new access db and copy (duplicate)...