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returning the valuemember of a datagridviewcombobox.

si2030 asked
Medium Priority
Last Modified: 2012-05-06
Hi Experts,

I have a datgridviewcombobox column with a display member and value member. I want to retrieve the valuemember so I can apply the data to file.

I am unsure if I have:

1:applied the valuemember/display member correctly.

The binding source is a LINQ result set with two members:
acc_id and accList.

2: How do I retrieve the valuemember from the selected value in the datagridviewcombobox cell.

What code would I write to retireve this value member?

Kind Regards

'Create the binding sources.
        Dim BSAccountComboBox As New BindingSource
        'Apply the binding sources.
        BSAccountComboBox.DataSource = accountList
        With accountComboBox
            .Name = "account"
            .DataSource = BSAccountComboBox
            .HeaderText = "Account"
            .DisplayMember = "accList"
            .ValueMember = "acc_id"
            .DropDownWidth = accComboBoxDropDwnWidth
            .DefaultCellStyle.BackColor = Color.WhiteSmoke
            .Width = 220
            .FlatStyle = FlatStyle.Flat
            .MaxDropDownItems = 10
  With dgvCreditorInvoiceDetail
            'Add the accountComboBox column to the DataGridView control.
        End With

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I'm not entirely sure what you're asking here. I would think that accountComboBox.SelectedValue would give you what you're after.


Hi Chaosian,

How would you use accountComboBox.SelectedValue for a specific row... say I have three rows each with a differernt selected value whats the line for "accountComboBox.SelectedValue"?



Say the drop down value or DisplayMember is "10000 Debtors" then the valuemember is "123". I want to obtain the value member - 123 - when this option is selected in the datagridviewcombobox. It may be that there are two or more rows filled in the datagridview then for each cell in the datagiridview in the datagridviewcombobox column I want to get the valuemember not the displaymember...
Just to make sure I understand what you're after, it sounds like there are two issues at hand.
1. How do you get the value for the combo box in a specific row of the grid?
2. How do you get the value rather than the text?
Hi Chaosian

I think I have worked out how to obtain these now...

 Dim test = dgvCreditorInvoiceDetail.CurrentCell.Value
        Dim test4 = dgvCreditorInvoiceDetail.Item(0, 0).Value
        Dim test1 = dgvCreditorInvoiceDetail.Rows(0).Cells(0).Value

These all work for the value.

The thing is, you cant obtain it in a cell validating event... it equals zero.

you can however use:
Dim comboBoxColumn As DataGridViewComboBoxColumn = dgvCreditorInvoiceDetail.Columns("account")


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The validating event issue makes sense -- the selected item likely hasn't been changed yet. Validation would occur first. I would, however, expect to have the correct value in a CellChange event.

Sounds like you've got this well in hand.
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