listview

Private Sub loadhostel()
        Dim AllRow As DataRow
        DAhostellist.Fill(Dsstudents1)
 
        For i As Integer = 0 To Dsstudents1.STUDENT.Rows.Count - 1 Step 1
            AllRow = Dsstudents1.STUDENT.Rows(i)
 
            If ComboBox1.SelectedItem.ToString = ValidateData(AllRow("hostelName")) And ComboBox2.SelectedItem.ToString = ValidateData(AllRow("hostelBlock")) Then
                AddNewLVRow(ListView1, AllRow)
            End If
        Next
    End Sub
    Private Sub AddNewLVRow(ByVal ListViewItm As ListView, ByVal xdataRow As DataRow)
        Dim itmparent As New ListViewItem(ValidateData(xdataRow("studentID")))
        Dim itm1 As New ListViewItem.ListViewSubItem(itmparent, ValidateData(xdataRow("hostelNo")))
        Dim itm2 As New ListViewItem.ListViewSubItem(itmparent, ValidateData(xdataRow("studentName")))
 
        itmparent.SubItems.Add(itm1)
        itmparent.SubItems.Add(itm2)
 
        ListViewItm.Items.Add(itmparent)
    End Sub
 
    Private Function ValidateData(ByVal value As Object) As String
        If Not DBNull.Value.Equals(value) Then
            Return CStr(value)
        Else
            Return "-"
        End If
    End Function