combobox.selectedvalue something is of type "System.Data.DataRowView"

  • Thread starter Thread starter AH
  • Start date Start date
A

AH

Hi, I am buzzled! if I set combobox.datasource to a dataview item (so that
it binds to a table), when I get return value from combobox.selectedvalue
SOMETIME error was returned bcos it is of type "system.data.datarowview" but
sometime it returns the value .... anyone could help?

Thank,

Albert
 
Try
' To put your failing code here and

Catch ex as exception

messagebox.show( ex.toString() )

End Try
 
Come on MS, your news servers are still playing up. Messages are going
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One Handed Man said:
Come on MS, your news servers are still playing up. Messages are going
missing etc. Posts which were there an hour ago disappear.
Click to expand...

All groups I have subscribed are working except this group...

:-(
 
-----Original Message-----
Hi Albert,

Have you got any offending code to show us?

Regards,
Fergus


.
hi Fergus,
Click to expand...

I set the datasource for the combo(cmbTrmCde) to a
datatable (dt) at the form loading stage. when I check
for the selectvalue at the selectindexchange event, it
sometime throws error that it can't read b'cos it
is "System.Data.DataRowView" type. So I have to write the
additional codes to work around it by handling the
exception... I may have missed something that caused the
selectedvalue became "datarowview" type, any suggestion??

Rgds,

Albert


-------------- code --------------
Public Class FrmPymntrm
Dim dvTrm As New PymntLst
Dim dv As New DataView
Dim dt As New DataTable
Dim idx As Integer


#Region " Windows Form Designer generated code "
.....
Friend WithEvents cmbTrmCde As
system.Windows.Forms.ComboBox
......
#End Region

Private Sub FrmPymntrm_Load(ByVal sender As
System.Object, ByVal e As System.EventArgs) Handles
MyBase.Load
dv = dvTrm.IniPymnt
Dim dr As DataRow
dt = dv.Table()
cmbTrmCde.DataSource = dt
cmbTrmCde.DisplayMember = dvTrm.PymntDsp
cmbTrmCde.ValueMember = dvTrm.PymntVlM
End Sub

Private Sub cmbTrmCde_SelectedIndexChanged(ByVal
sender As System.Object, ByVal e As System.EventArgs)
Handles cmbTrmCde.SelectedIndexChanged
Dim SelCde As String
If cmbTrmCde.SelectedValue.GetType.ToString
= "System.Data.DataRowView" Then
Dim dv As DataRowView
dv = cmbTrmCde.SelectedValue
Idx = cmbTrmCde.SelectedIndex
SelCde = dv("PymntCode")
Else
SelCde = cmbTrmCde.SelectedValue
Idx = cmbTrmCde.SelectedIndex
End If
..... ...
End Sub
 
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