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05.22.2008 at 12:05PM PDT, ID: 23425576
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Error in combobox if SelectedIndex = 0

Asked by mark_norge in Microsoft Visual Basic.Net

Tags: visual basic express 2005

Hi Experts,
I have a combobox that is filled when the index of another combobox changes. The combobox is connected to a datasource.

The values in the datasource are correct. The problem is the selectedindex. If the uses selects "add" - to trigger the sub for the combobox - the selectedindex should be 0 (this does not work) and if the user selects "modify" - to trigger the sub for the combobox - the selected index should be value on the row that the user wants to change (this works).

If the user selects "add" (selectedindex = 0) I get the following error message:

InvalidArgument=Value of '0' is not valid for 'SelectedIndex'.
Parameter name: SelectedIndex

I used the value 0 before without any problem, but now it does not seem to work somehow.

Help from your side in appriciated, MBStart Free Trial 
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Private Sub ComboBox8_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ComboBox8.SelectedIndexChanged
        'Fill size below ASN if production changes 
 
        Dim i As Integer
        Dim TableASNSizes As New DataTable
        Dim dv As New DataView(ds.Tables("Products"))
        dv.RowFilter = "Production LIKE '%" & Me.ComboBox8.Text & "%'"
        TableASNSizes = dv.ToTable("Size", True, "Size")
 
        With Me.ComboBox9
            .DataSource = TableASNSizes
            .ValueMember = "Size"
            .DisplayMember = "Size"
            If SaveCallFrom = "modify" Then
                For i = 0 To .Items.Count - 1
                    If .Items(i)("Size").ToString = ds.Tables("ASNs").Rows(SelectedRow)("Size").ToString Then
                        .SelectedIndex = i
                        Exit For
                    End If
                Next
                If i >= .Items.Count Then .SelectedIndex = -1
            Else
                .SelectedIndex = 0
            End If
        End With
 
    End Sub
[+][-]05.22.2008 at 12:34PM PDT, ID: 21626879

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[+][-]05.22.2008 at 12:46PM PDT, ID: 21626960

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[+][-]05.22.2008 at 01:06PM PDT, ID: 21627102

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[+][-]05.22.2008 at 01:22PM PDT, ID: 21627217

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[+][-]05.22.2008 at 01:28PM PDT, ID: 21627262

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[+][-]05.22.2008 at 01:48PM PDT, ID: 21627459

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[+][-]05.22.2008 at 03:25PM PDT, ID: 21628143

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About this solution

Zone: Microsoft Visual Basic.Net
Tags: visual basic express 2005
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Solution Provided By: Sancler
Participating Experts: 1
Solution Grade: A
 
 
[+][-]05.22.2008 at 03:34PM PDT, ID: 21628194

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