Vb.net Updating records

Hi Experts

I have inherited some one's VB code and trying to learn it

He uses DataConnectors and readers he has created

My Question is I have a new Table I created and 4 TextBoxes and I want the TextBox.text for the 4 of them
to be added to the Table Fields 1 - 4
How using code like

Dim MySQL as string = "Select Field1, field2, field3, field44 from MYTable"
Dim prameters as New DataParameterConnector("@Id", Nothing)
Dim Reader1 as Data.IDataReader = Company.DataConnector.getreader(sql, nothing)

Thanks