.xaml file like below...........

<ig:XamComboEditor x:Name="txtBussUnit" Grid.Column="14" Grid.Row="2" Width="150" EmptyText="--Select--"
                               ItemsSource="{Binding BusinessUnitItems,Mode=TwoWay}"
                               DisplayMemberPath="Text"
                               SelectedItem="{Binding BusinessUnit,Mode=TwoWay}" IsEditable="False"/><Button Content="Clear" Command="{Binding CustomerSearchClearCommandBase,Mode=TwoWay}" CommandParameter="{Binding CustomerSearchField,Mode=TwoWay}"/>

in .cs file like below ...................

CustomerSearchClearCommandBase = new CommandBase(CustomerSearchCtrlClear);

private void CustomerSearchCtrlClear(object parameter)
        {

try
            {
                SetBusyIndicator(true);
                CustomerSearchField = null;
                CustomerSearchField = new Search();

                CustomerSearchField.BusinessUnitItems = TempCustomerSearchField.BusinessUnitItems;
                CustomerSearchField.BusinessUnit = BusinessUnit;}catch(Exception ex){throw (eX);}

When we click on clear button in silver light 4 its clearing in Business Unit Dropdown, but when we click on clear button in silver light 5 its throwing exception at CustomerSearchField.BusinessUnit = BusinessUnit; error like Cutomcombo object instance.

Businessunit is a CustomComboBox in Search class.

My question here is it support XamComboEditor in silverlight 5 or not? if it is support then please let me know this issue with infragistics or Microsoft related.

Regards

Srinivas