internal MainWindowViewModel(Settings settings)
{
this.readOnlyEvents = new ReadOnlyObservableCollection <Event>(this.events);
this.consumerConnection = new ConnectionViewModel(this);
this.providerConnection = new ConnectionViewModel(this);
this.canEditSettings = CalculatedProperty.Create(
this.GetProperty(o => o.IsStarted),
this.GetProperty(o => o.IsStopped),
(isStarted, isStopped) => !isStarted && isStopped,
this.GetProperty(o => o.CanEditSettings));
#region CalculatedProperty2
this.canStart = CalculatedProperty.Create(
this.GetProperty(o => o.IsStarted),
this.GetProperty(o => o.IsStopped),
this.GetProperty(o => o.ListeningPort),
this.GetProperty(o => o.ProviderPort),
this.GetProperty(o => o.LogFolder),
(isStarted, isStopped, lp, pp, lf) => !isStarted && isStopped && string.IsNullOrEmpty(ValidatePort(lp) + ValidatePort(pp) + ValidateFolder(lf)),
this.GetProperty(o => o.CanStart));
#endregion
this.canStop = CalculatedProperty.Create(
this.GetProperty(o => o.IsStopped), s => !s, this.GetProperty(o => o.CanStop));
this.settings = settings;
#region TwoWayBinding
TwoWayBinding.Create(
this.settings.GetProperty(o => o.ListeningPort), this.GetProperty(o => o.ListeningPort));
TwoWayBinding.Create(
this.settings.GetProperty(o => o.ProviderHostName), this.GetProperty(o => o.ProviderHostName));
TwoWayBinding.Create(
this.settings.GetProperty(o => o.ProviderPort), this.GetProperty(o => o.ProviderPort));
TwoWayBinding.Create(
this.settings.GetProperty(o => o.LogFolder), this.GetProperty(o => o.LogFolder));
TwoWayBinding.Create(
this.settings.GetProperty(o => o.AutoScrollToMostRecentEvent),
a => a,
this.GetProperty(o => o.AutoScrollToMostRecentEvent),
a => a.GetValueOrDefault());
#endregion
this.AddValidationRule(this.GetProperty(o => o.ProviderPort), ValidatePort);
this.AddValidationRule(this.GetProperty(o => o.ListeningPort), ValidatePort);
this.AddValidationRule(this.GetProperty(o => o.LogFolder), ValidateFolder);
}
////////////////////////////////////////////////////////////////////////////////////////////////////////////////
internal ConnectionViewModel(MainWindowViewModel parent)
{
this.parent = parent;
this.connectionCount = CalculatedProperty.Create(
this.parent.GetProperty(o => o.IsStopped),
this.GetProperty(o => o.ConnectionCountCore),
(s, c) => GetCount(!s, c),
this.GetProperty(o => o.ConnectionCount));
this.bytesReceived = CalculatedProperty.Create(
this.GetProperty(o => o.Client),
this.GetProperty(o => o.BytesReceivedCore),
(c, r) => GetCount(c != null, r),
this.GetProperty(o => o.BytesReceived));
this.secondsSinceLastReceived = CalculatedProperty.Create(
this.GetProperty(o => o.Client),
this.parent.GetProperty(o => o.Now),
this.GetProperty(o => o.LastReceived),
(c, n, r) => c == null ? string.Empty : ((long)(n - r).TotalSeconds).ToString(CultureInfo.InvariantCulture),
this.GetProperty(o => o.SecondsSinceLastReceived));
}
static void Main()
{
Application.EnableVisualStyles();
Application.SetCompatibleTextRenderingDefault(false);
CustomPropertyTypeDescriptor.Register(typeof(OrderLine),
CalculatedProperty.Create("Total", (OrderLine source) => source.Quantity * source.Price)
);
var form = new Form();
var dg = new DataGridView {
Dock = DockStyle.Fill, Parent = form
};
dg.DataSource = Enumerable.Range(1, 10).Select(n => new OrderLine
{
ItemNo = "Item#" + n,
Quantity = n,
Price = 10 * n
}).ToList();
Application.Run(form);
}