AJAX :: Set Ext:ComboBox ListWidth:'auto'?

Dec 9, 2010

'm using an ext:Combobox control i need to set the Listwidth of the combo box auto or 100%. I tried it like this but the list colour gets changed but width is static when i give ListWidth="100px" it works . How can I do this?

<ext:ComboBox ID="cmbReason" runat="server" StoreID="STRReason" Mode="Default" DisplayField="ReasonName"
ValueField="ReasonCode" EmptyText="Select a Value" Width="250px"
ValidationGroup="Save" ListClass="ExtAutoListClass"
Editable="false">
</ext:ComboBox>
.ExtAutoListClass
{
list-style:auto;
width:auto;
color:Green;
}

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