Build Your Business Logic

Build the logic in your app to solve a business problem. As there are many ways to achieve a particular result, use the methods that you are most comfortable using.

Let's say you want to build an app that gets property-change notifications. Among the tasks that need to be done are:

Create a simple property to get change event notifications from the SDK.
Add a reference to the appropriate SDK namespace (for example, ArchestrA.Client.MyViewApp.Navigation).
Specify the property your are interested in (for example, ArchestrA.Client.MyViewApp.Navigation.CurrentAssetName).
Determine if the ViewApp is functioning in run time or is being configured. If it is being configured, we are not interested in receiving notification.
Establish a reference to the SDK to get change notification.

CurrentAsset Changed Notification	Copy Code
namespace MyOMIApp { /// <summary> /// Interaction logic for UserControl1.xaml /// </summary> public partial class UserControl1 : UserControl, INotifyPropertyChanged { /// <summary> /// this is a constructor /// </summary> public UserControl1() { InitializeComponent(); /// if this control is in design mode, don't do anything if(!System.ComponentModel.DesignerProperties.GetIsInDesignMode(this)) /// if not in design mode, subscribe ArchestrA.Client.MyViewApp.Navigation.PropertyChanged +- Navigation_PropertyChanged; } /// simple property - get asset change notification from SDK; need to get reference from SDK public string CurrentAssetName { get; set; } /// <summary> /// setting up business logic /// </summary> void Navigation_PropertyChanged(object sender, System.ComponentModel.PropertyChangedEventArgs e) { if (Incontext) { if (e.PropertyName == CurrentAsset) { CurrentAssetName = ArchestrA.Client.MyViewApp.Navigation.CurrentAsset; if (PropertyChanged != null) PropertyChanged(this, new PropertyChangedEventsArgs("CurrentAssetName")); } } } /// Create a simple property to get notification from SDK /// use browsable(false) so this is not imported [Browsable(false)] public string CurrentAssetName { get; set; } public bool Incontext { get; set; }

CurrentAsset Changed Notification

Copy Code

namespace MyOMIApp
{
    /// <summary>
    /// Interaction logic for UserControl1.xaml
    /// </summary>
    public partial class UserControl1 : UserControl, INotifyPropertyChanged
    {
        /// <summary>
        /// this is a constructor
        /// </summary>
        public UserControl1()
        {
            InitializeComponent();
         
            /// if this control is in design mode, don't do anything
            if(!System.ComponentModel.DesignerProperties.GetIsInDesignMode(this))
          
            /// if not in design mode, subscribe
            ArchestrA.Client.MyViewApp.Navigation.PropertyChanged +- Navigation_PropertyChanged;
        }
        /// simple property - get asset change notification from SDK; need to get reference from SDK
        public string CurrentAssetName { get; set; }
        /// <summary>
        /// setting up business logic
        /// </summary>
      
        void Navigation_PropertyChanged(object sender, System.ComponentModel.PropertyChangedEventArgs e)
        {
            if (Incontext)
            {
                if (e.PropertyName == CurrentAsset)
                {
                    CurrentAssetName = ArchestrA.Client.MyViewApp.Navigation.CurrentAsset;
                    if (PropertyChanged != null)
                        PropertyChanged(this, new PropertyChangedEventsArgs("CurrentAssetName"));
                }
            }
        }
    /// Create a simple property to get notification from SDK
    /// use browsable(false) so this is not imported
    [Browsable(false)]
    public string CurrentAssetName { get; set; }
    public bool Incontext { get; set; }