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POWPF PRISM/Unity viewModel parameter
 

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  1. POWPF PRISM/Unity viewModel parameter
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    <p>I have a view and corresponding view model for adding or editing a customer. </p> <p>If I click the Add new customer button, unity wires me up a nice shiny new CustomerView and passes in my datacontext and view model, and a customer object that are contructor parameters. </p> <p>I save my customer and now want to view another, existing customer record, from my datagrid. </p> <p>I have a command that accepts the selectedItem (Customer) from the datagrid and I now want to pass this in to my CustomerView as a parameter, in my Constructor for the View Model. </p> <p>How do I tell Unity that I now want to build my Views view model with my Client parameter and then navigate to the view?</p> <p><em>edit</em> I register my views in CustomerModule and add a Customers launch button to navigation region like this:</p> <pre><code>public void Initialize() { _container.RegisterType&lt;ICustomerMainView, CustomerMainView&gt;(); _container.RegisterType&lt;ICustomerMainViewViewModel, CustomerMainViewViewModel&gt;(); _container.RegisterType&lt;ICustomerView, CustomerView&gt;(); _container.RegisterType&lt;ICustomerViewViewModel, CustomerViewViewModel&gt;(); _container.RegisterType&lt;ICustomerNavIconView, CustomerNavIconView&gt;(); _container.RegisterType&lt;ICustomerNavIconViewModel, CustomerNavIconViewModel&gt;(); //var view = _container.Resolve&lt;ICustomerMainView&gt;(); //var view1 = _container.Resolve&lt;ICustomerView&gt;(); _regionManager.RegisterViewWithRegion("NavigationRegion", typeof(Views.CustomerNavIconView)); } </code></pre> <p>To add a new customer I have a command with the following:</p> <pre><code>private void OnAddNewCustomer() { try { _regionManager.RegisterViewWithRegion("MainRegion", typeof(Views.CustomerView)); _regionManager.RequestNavigate("MainRegion", "CustomerView"); } catch (Exception ex) { } } </code></pre> <p>This is fine and I can add a new customer and save details. Now if I want to view the customer I have saved by double clicking the record in my grid I have a command as follows but don't know how to set the CustomerViewViewModel "customer" parameter to be my selectedItem(Customer)????</p> <pre><code>private void OnViewCustomer(Customer customer) { try { _unityContainer.Resolve&lt;ICustomerViewViewModel&gt;(new ParameterOverride("customer", customer)); _regionManager.RequestNavigate("MainRegion", "CustomerView"); } catch (Exception ex) { } } </code></pre> <p>Thanks.</p>
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      1. POWPF PRISM/Unity viewModel parameter
      1. USBlachshma
 

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