My friend have a weird problem in using update, insert, and probably w/ delete functions.

The changes reflects only in the dataset but not on the actual records?
This is a sample of my code:

Code:
Dim taMedia as New dsMainTableAdapters.MediaTableAdapter

taMedia.Insert(txtMediaName.Text)
This code works fine w/ ASP.NET 2.0(VB) but why not in VB.NET 2005(Windows Application).