Hello guys im in need of a help. I have a checkbox on a Listview1 and i also have listview2, textbox and 2 buttons. On listview1, i have a list of items and its subitems. Then im going to put a check on the one of the listview item then once i click the button1 the value of the sub item of that item will be put into textbox. Then on button2 i have the select statement where it's WHERE is textbox.text and it will display the data of that item from database to listview2. Once i run my program, check the item from listview1 then click button1, its working fine it puts the value of that listview1 to textbox1 but when i click button2 it dont work. But if i am the one putting value on textbox.text it is working, so i think the problem is when it transfer the value from listview to textbox3. I dont know what to do. Sorry if my explanation is not that understandable enough, thats my best in explaining my problem :s Thanks in advance to whoever will help me solve my problem.. i need this to finish my thesis. Thank you.

This is my code on my button1. This sends the value of subitem into textbox.text.

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles printbtn.Click

Dim item As ListViewItem

        Dim checkedItems As ListView.CheckedListViewItemCollection = _

        For Each item In checkedItems
            TextBox.Text = item.SubItems(7).Text
End Sub

Then my function on button2.

Public Sub showtest()

        connstring = "Data Source=.\SQLEXPRESS;AttachDbFilename=""C:\Users\Pabzz\Desktop\CSRP 10.20.12\Main\Database1.mdf"";Integrated Security=True;Connect Timeout=30;User Instance=True"
        conn.ConnectionString = connstring

        Dim dt As New DataTable
        Dim ds As New DataSet

        sql = "SELECT * FROM Books_Table WHERE rfidtag='" & TextBox3.Text & "'"

        Dim da As New SqlDataAdapter(sql, conn)


        Dim dRow As DataRow

        For Each dRow In dt.Rows

            ListView2.Items(ListView2.Items.Count - 1).SubItems.Add(dRow.Item(1).ToString)
            ListView2.Items(ListView2.Items.Count - 1).SubItems.Add(dRow.Item(2).ToString)
            ListView2.Items(ListView2.Items.Count - 1).SubItems.Add(dRow.Item(3).ToString)
            ListView2.Items(ListView2.Items.Count - 1).SubItems.Add(dRow.Item(4).ToString)
            ListView2.Items(ListView2.Items.Count - 1).SubItems.Add(dRow.Item(5).ToString)
            ListView2.Items(ListView2.Items.Count - 1).SubItems.Add(dRow.Item(6).ToString)
            ListView2.Items(ListView2.Items.Count - 1).SubItems.Add(dRow.Item(7).ToString)
            ListView2.Items(ListView2.Items.Count - 1).SubItems.Add(dRow.Item(8).ToString)


    End Sub

Change your DataSource string - you need only the opening and closing quotes.
connstring = "Data Source=.\SQLEXPRESS;AttachDbFilename=""C:\Users\Pabzz\Desktop\CSRP 10.20.12\Main\Database1.mdf"";Integrated Security=True;Connect Timeout=30;User Instance=True"

connstring = "Data Source=.\SQLEXPRESS;AttachDbFilename=C:\Users\Pabzz\Desktop\CSRP 10.20.12\Main\Database1.mdf;Integrated Security=True;Connect Timeout=30;User Instance=True"

Try that and see if it helps.

It looks like you're also not even using the ds variable...

A cleaner add would be

For Each dRow In dt.Rows

    Dim item As New ListViewItem(dRow.Item(0).ToString)

    For i As Integer = 1 To 8



If these suggestions solved your issue, please mark the thread as "solved"

It looks to me that your putting the info into textbox but your reading the info from textbox3.