How to insert listview items into 3 different tables VB.net - vb.net

Question

I'm trying to make a library system. I have a listview and it contains items to be inserted into different tables, (b_borrow_tbl, for the books , d_borrow_tbl for the multimedia, and m_borrow_tbl for the module).
I'm using this code to insert items to b_borrow_tbl:
Dim myconnection As New SqlConnection("Data Source = .\SqlExpress;Initial Catalog = librarysystemdb; Integrated Security = True")
selecteduser = cmb_borrower.SelectedValue
myconnection.Open()
For xa = 0 To ListView1.Items.Count - 1
Dim mycommand As New SqlCommand("Insert into b_borrow_tbl (bid,user_id,dateborrowed,aid,status) values(#bid,#user,#dateborrowed,#admin ,'" & "Borrowed" & "')", myconnection)
mycommand.Parameters.AddWithValue("bid", ListView1.Items(xa).SubItems(5).Text)
mycommand.Parameters.AddWithValue("user", selecteduser)
mycommand.Parameters.AddWithValue("dateborrowed", datestring)
mycommand.Parameters.AddWithValue("admin", LoginPage.admin)
mycommand.ExecuteNonQuery()
myconnection.Close()
Next
MsgBox("Transaction Saved")
ListView1.Items.Clear()
myconnection.Close()
End Sub

Answer 1

Here's one possibility. Note that I can't give you exact code because I don't know the structure of your other tables...so, with that caveat...
Dim myconnection As New SqlConnection("Data Source = .\SqlExpress;Initial Catalog = librarysystemdb; Integrated Security = True")
selecteduser = cmb_borrower.SelectedValue
myconnection.Open()
For xa = 0 To ListView1.Items.Count - 1
Dim itemType as String
itemType = ListView1.Items(xa).Subitems(6).Text ' Not sure abt col #
if itemType="Books" Then
Dim mycommand As New SqlCommand("Insert into b_borrow_tbl (bid,user_id,dateborrowed,aid,status) values(#bid,#user,#dateborrowed,#admin ,'" & "Borrowed" & "')", myconnection)
mycommand.Parameters.AddWithValue("bid", ListView1.Items(xa).SubItems(5).Text)
mycommand.Parameters.AddWithValue("user", selecteduser)
mycommand.Parameters.AddWithValue("dateborrowed", datestring)
mycommand.Parameters.AddWithValue("admin", LoginPage.admin)
mycommand.ExecuteNonQuery()
End If
If itemType="Multimedia" Then
mycommand.SqlCommand="Insert into d_borrow_table( field1,field2,etc) values (#parm1,#parm2,...)
mycommand.Parameters.Clear()
mycommand.Parameters.AddWithValue("#param1",value)
' etc
mycommand.ExecuteNonQuery()
' Then repeat by changing command text for third table
' clearing/defining parameters, then executing the query
End If
myconnection.Close()
Next
MsgBox("Transaction Saved")
ListView1.Items.Clear()
myconnection.Close()
End Sub
All we're doing here is "resetting" the "mycommand" variable with a new INSERT statement, clearing the parameters, and redefining them for the second and third inserts. Note that the connection isn't closed until after all three inserts have fired. You'll obviously need to replace the "placeholders" of "field1,field2" and #param1,#param2 etc with the actual fields from your tables, but I think that should give you a push in the right direction.