Dear,

How can I programmically check a checkbox in my datagrid that is not part of the datasource ?

I fill my datagrid based on a stored procedure and I have added a checkbox column in front as explained in other posts here.  Some of the records however have to be checked but I don't find the source code to programmically check the item (dataitem) while iterating through the records (datarecords) ? Can anyone give me an example of the right source code ? Thank you very much

C# Code iteration :

public void IterateMainGridRecords(RecordCollectionBase records)
        {
            try
            {
                foreach (Record rec in records)
                {

                    if (rec.RecordType == RecordType.GroupByField || rec.RecordType == RecordType.GroupByFieldLayout)
                    {
                        GroupByRecord groupRecord = (GroupByRecord)rec;

                        if (groupRecord.HasChildren)
                            IterateMainGridRecords(groupRecord.ChildRecords, strIterateProcess);
                    }
                    else if (rec.RecordType == RecordType.DataRecord)
                    {
                        DataRecord dataRecord = (DataRecord)rec;

                    => how to check the Checkbox here for some records ???

                    }

XAML code for datagrid checkbox

<!-- This Style puts a CheckBox into the record selectors. -->
                                <Style BasedOn="{x:Null}" TargetType="{x:Type igDP:RecordSelector}">
                                    <Setter Property="Control.Template">
                                        <Setter.Value>
                                            <ControlTemplate TargetType="{x:Type igDP:RecordSelector}">
                                                <CheckBox HorizontalAlignment="Center" IsChecked="{Binding Path=DataItem.IsChecked, Mode=TwoWay}" VerticalAlignment="Center" Checked="fRecordChecked" Unchecked="fRecordUnChecked" />
                                            </ControlTemplate>
                                        </Setter.Value>
                                    </Setter>
                                </Style>

                                <!-- This Style puts a CheckBox into the header area above the record selectors. -->
                                <Style TargetType="{x:Type igDP:HeaderPrefixArea}" BasedOn="{x:Null}">
                                <Setter Property="Visibility" Value="Visible" />
                                <Setter Property="Template">
                                    <Setter.Value>
                                        <ControlTemplate TargetType="{x:Type igDP:HeaderPrefixArea}">
                                                <CheckBox HorizontalAlignment="Center" VerticalAlignment="Center" IsChecked="{Binding Path=DataPresenter.DataContext.AllMembersAreChecked}" Checked="fAddAllRecordsToCheckList" Unchecked="fRemoveAllRecordsFromCheckList" />
                                        </ControlTemplate>
                                    </Setter.Value>
                                </Setter>
                            </Style>