How to save Textbox values in database using C#.net

I would have done something like this:

private void LetsDoIt()
{
   while(TestedAndOk() == false)
   {
       WriteSomeCode();
   }
}

And if you are facing problems in starting/writing code, I would refer to msdn, cp, google. In this case, I would start with this article [^]on CP.