Connect Oracle Database using Visual Basic

'How to connect Oracle Database from Visual Basic

'Sample code and connection strings to connect Oracle using Visual Basic:

Dim conn As ADODB.Connection

' Open a Conn_Dataection using Oracle ODBC.

Set Conn_Data = New ADODB.Connection

Conn_Data.ConnectionString = "Driver={Microsoft ODBC for Oracle};" & "UID=user_name;PWD=user_passsword"

Conn_Data.Open

'Open the table as in:

Dim rs_Data As ADODB.Recordset

' Open the table.

Set rs_Data = New ADODB.Recordset

rs_Data.Open "TableName", Conn_Data, adOpenDynamic, adLockOptimistic, adCmdTable

'Enter the user name password and table name as per the database.

'it must be valid one.

'To reads the data from the table and displays the values in a ListBox

' List the data.

Do While Not rs_Data.EOF

    txt = ""

    For Each fld In rs_Data.Fields

        txt = txt & Trim$(fld.Value) & ", "

    Next fld

    If Len(txt) > 0 Then txt = Left$(txt, Len(txt) - 2)

    List1.AddItem txt

    rs_Data.MoveNext

Loop

'Finally close the recordset and close the Conn_Dataection:

rs_Data.Close

Conn_Data.Close

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