Jscript Error After Upgrading To 2010

Jul 30, 2010

I have a webform that has a formview (fvwContract) and inside itemtemplate there is a Tabcontainer with three tabs (invoice (spanish: factura), receipt (spanish: recibo) and beneficiary (spanish: beneficiario). I have another formview inside invoice tab (fvwFactura) with many textboxes that I need to manipulate in code behind. The thing is that I can´t reference any of them like the following:

protected void DropDownList1_SelectedIndexChanged2(object sender, EventArgs e)
{


AjaxControlToolkit.TabContainer container = (AjaxControlToolkit.TabContainer)fvwContract.FindControl("TabContainer1");
[Code]....

how to reference any control inside frwContract.TabContainer1.fvwFactura?

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[Code]....

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[Code]....

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