Silverlight: MVVM and re-initializing form - mvvm

Question

We use Prism and from the grid we pop up a edit form that has two options, "Save" and "Save and New". My question is about re-initializing form. I am wondering if there is a better or simpler way? What I do is expose a InteractionRequest on the view model, and than use InteractionRequestTrigger in xaml to change the properties of the form, like this:
private void SubmitAndNewCommandCallback(IEnumerable<ValidationResult> errors)
{
if (errors != null && errors.Any())
{
Errors = errors.Select(x => x.ErrorMessage).ToList();
}
else
{
if (IsNew)
{
_events.GetEvent<BidAgentCreated>().Publish(this.BidAgent);
}
_intializeFormRequest.Raise(this);
}
}
<i:Interaction.Triggers>
<prism:InteractionRequestTrigger SourceObject="{Binding InitializeFormRequest}" >
<ei:ChangePropertyAction TargetName="ctlAgentType" PropertyName="SelectedIndex" Value="0" />
<ei:ChangePropertyAction TargetName="ctlAgentSearchBox" PropertyName="Text" Value=""/>
</prism:InteractionRequestTrigger>
</i:Interaction.Triggers>

Answer 1

A clean way is to get rid of the logic in your View and keep it in the ViewModel.
in xaml
<ComboBox ItemsSource="{Binding AgentTypes}" SelectedItem="{Binding SelectedAgentType,UpdateSourceTrigger=PropertyChanged,Mode=TwoWay}"/>
<TextBox Text="{Binding SearchText,UpdateSourceTrigger=PropertyChanged,Mode=TwoWay}" />
in the ViewModel
private void SubmitAndNewCommandCallback(IEnumerable<ValidationResult> errors)
{
if (errors != null && errors.Any())
{
Errors = errors.Select(x => x.ErrorMessage).ToList();
}
else
{
if (IsNew)
{
_events.GetEvent<BidAgentCreated>().Publish(this.BidAgent);
}
SearchText="";
SelectedAgentType = AgentTypes.First(); //selects first agenttype, or set to null to select nothing in the combobox
}
}