How to select a combobox item by value?

I have a combobox with datasource, display member and value member configured (retrieving by data table) and I want to update a data table row in a form. The combobox must be populated and the actual value need to be selected. I try to do it with this.combobox1.SelectValue = DataTableValue but the item not changed. Oh! I forgot to say a important question: I don´t want to use SelectedIndex. I want to select the item by value. Thanks.
paulofonsecajrAsked:
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Death259Commented:
you should be able to just do:
combobox1.SelectedValue = datatable1.Rows[0][0].ToString();

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paulofonsecajrAuthor Commented:
Yes, I try:

this.comboTabelaPorModeloDocumento.SelectedValue = Convert.ToInt32(dRow.Cells["tabelaDicionarioDados"].Value);

and

this.comboTabelaPorModeloDocumento.SelectedValue = dRow.Cells["tabelaDicionarioDados"].Value.ToString();

But it not works.
paulofonsecajrAuthor Commented:
Sorry, the event was wrong, I was setting up the value before Form_Load and the combo fill.

Death259. The solution is ok.
Death259Commented:
Well, if this solved your problem please be sure to mark it as the answer.
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