is there any way to add adodc in the toolbox and so uses it in the vb 2005 forms? how can i do? thank you!

Do you mean ADODB?

If so, why would you want to use that? .NET has much better data access classes built in.

-Peter

thank you for answering to me.i have to do a program with vb as a diploma project. but the teacher who is instructing me has worked with vb6.0 so he had gave to me a code for connection with oracle that i cannot use with vb 2005.i've starting learning this and now i dont want to return back to vb6.0. can you tell me the code to connect to oracle using odbc,and than the code for making changes as insertion,update or delete in a table of the database.you have make me a big favour if help me,i'm really in a big problem.bye

I wouldn't be doing much of a service to your educational institution or your education if I gave you the code you need. Isn't that the point of education? Look at the System.Data.OleDb namespace for the classes you can use to connect and create commands to execute queries.

http://msdn2.microsoft.com/en-us/lib...ata.oledb.aspx

For connection strings, try this:

http://www.connectionstrings.com/

-Peter