you need to write a query for on your submit button.
if you want to save new record then you need to use inster query and if you need to update old record then you need to use update query. here are is the sample query you can use for reference
Insert Query = INSERT INTO USER_INFO (Name, Addres, Age,Contact_no) Values ('" & Textbox1.Text & "', '" & Textbox2.Text & "', '" & Textbox3.Text & "', '" & Textbox4.Text & "')
Update Query = UPDATE USER_INFO SET Name = ' " & Textbox1.Text & "', Address = ' " & Textbox2.Text & "', Age = ' " & Textbox3.Text & "', Contact_no = ' " & Textbox4.Text & "' WHERE (PrimaryKey = "pk")
download use this link for study
Insert, Update, Delete & Search Values in MS Access 2003 with VB.NET 2005[
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