Is this a copy or original

Im working in VB with an ADODB connection to an ACCESS database. With a SAVE button click, I want to check to see if there is only "1" instance of the record to be saved and save it. If not, then I want to populate a DATAGRID with both instances so the user can select which one is the right one. SO, how can I check this without viewing the data first?

Thanks

Do you want to do this in VB.NET ?:confused:

Yes. It's the only language I know right now.

Not sure what you mean by 1 instance of the record . And also , ADODB doesn't exist in VB.NET but you can use it interop which is no one recommend , instead use "ADO.NET" .

With "1" instance, I mean, I only want to have "1" file saved to the database, not many of the same name etc... ADODB is the reference, sorry.

Quote:

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Originally posted by Dooglo
With "1" instance, I mean, I only want to have "1" file saved to the database, not many of the same name etc... ADODB is the reference, sorry.

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So , basically you want to check if the record is already exist , then don't add otherwise , add it to the database ??

I know ADODB , but I forgot how to use it (I used to use it in VB6 days :( ) . Do you know how to use ADO.NET ? Or do you know anything about it ?:rolleyes:

Yes. Ok.

Quote:

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Originally posted by Dooglo
Yes. Ok.

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Well , I don't know what you mean by 'OK' but I assume you refer to 'ADO.NET' . Use this before you add any record . It returns true if data already exists , otherwise false .

VB Code:

Public Function Check_Existed(ByVal TablStr As String, ByVal ColumStr As String, ByVal ChkStr As String) As Boolean
                Dim sqlst As String = "SELECT * FROM " & TablStr & " WHERE " & ColumStr & "= " & " '" & ChkStr & "'"
                Dim mycom As New OleDbCommand(sqlst, MyConnection)
 
'You should open the connection to your database .
OpenDB()
                Dim reader As OleDbDataReader = mycom.ExecuteReader(CommandBehavior.CloseConnection)
 
                If reader.Read() Then
                    MessageBox.Show("Already existed")
                    reader.Close()
                    Return True
                Else
                    reader.Close()
                    Return False
                End If
 
                reader = Nothing
                CloseDB.CloseDB()
            End Function

Thanks.

I'll try that and let you know.

Hi,

"Im working in VB with an ADODB connection to an ACCESS database. With a SAVE button click, I want to check to see if there is only "1" instance of the record to be saved and save it. If not, then I want to populate a DATAGRID with both instances so the user can select which one is the right one. SO, how can I check this without viewing the data first?"

I am wondering if you have been correctly understood.

Are you saying that in your program it is possible to have the same new record to be added to a database, existing in more than one location and that they may have different field contents?
So that you then require the user to select which record should be saved to the database? If so, how do you determine that it is the same record and not a different, but with similar content, one? Where will these multiple records be held?