public async void CreateEdge()
{
if ((this.NewEdgeStart == null) ||
(this.NewEdgeEnd == null))
{
return;
}
if (this.NewEdgeStart == this.NewEdgeEnd)
{
return;
}
if (this.NewEdgeEnd is FaultTreeTerminalNode && this.NewEdgeStart is FaultTreeTerminalNode)
{
string rateString = await MessageDialogs.ShowRateDialogAsync();
double rate;
if (double.TryParse(rateString, out rate) && rate >= 0)
{
this.FaultTree.MarkovChain[(FaultTreeTerminalNode)this.NewEdgeStart, (FaultTreeTerminalNode)this.NewEdgeEnd] = rate;
}
}
else
{
this.NewEdgeStart.Childs.Add(this.NewEdgeEnd);
}
this.RaisePropertyChanged("FaultTree");
}