Add the page and the necessary controls for your db insert to take place. The, in the code behind, add the following code to the buttons click event.
Protected Sub btnAdd_Click(ByVal sender as object, byVal e as system.EventArgs ) handles btnAdd.Click
SqlDataSource.InsertParameters("CategoryID").DefaultValue = txtID.text
SqlDataSource.InsertParameters("ShortName").DefaultValue = txtShortName.text
...
...
...
Try
SqlDataSource.Insert()
txtID.test = ""
txtShortName = ""
...
...
...
Catch ex as Exception
lblError.text = "An exception ocurred. " & ex.Message
End Try
End Sub