Caliburn.Micro + MaterialToolkitDialog not Open .. : ( - caliburn.micro

Question

with Calibrun.Micro(WPF) + MaterialToolkit,
I tried to open Dialog. but not work..
Could you check my code ? (in GitHub)
Here is small test project.
Click the "Open" button.
this button fired dialog like this.
public async void NewConnection(){
var result = await DialogHost.Show(
new UserControl { DataContext = new TestDialogViewModel() },
"MainDialogHost");
}
Change to gray background( good ), but No dialog.. Why ?

Answer 1

I found a solution.
// MainViewModel.cs
TestDialogViewModel vm;
...
public async void NewConnection()
{
vm = IoC.Get<TestDialogViewModel>();
var dialog = new TestDialogView()
{
DataContext = vm
};
var result = await DialogHost.Show(dialog, "MainDialogHost",
(object sender, DialogOpenedEventArgs eventArgs) =>
{
// pass DialogSession to ViewModel.
// View Model can close own dialog !
vm.dialogSession = eventArgs.Session;
},
(object sender, DialogClosingEventArgs eventArgs) =>
{
Debug.WriteLine($"IPaddress = "+vm.IpAddress);
});
}
and
<!-- in MainView.xaml -->
<materialDesign:DialogHost Identifier="MainDialogHost"
CloseOnClickAway="True"
cal:Message.Attach="[Event DialogClosing]=[Action DialogHost_OnDialogClosing()]"
>
and..
// in TestDialogViewModel
public DialogSession dialogSession;
public void BtnConnect()
{
dialogSession.Close();
}
and..
<!-- in TestDialogView.xaml -->
<StackPanel Margin="20" Orientation="Vertical">
<TextBlock>Input IP Address</TextBlock>
<TextBox Margin="0 20 0 10"
FontSize="28"
HorizontalAlignment="Stretch"
Text="{Binding Path=IpAddress, Mode=TwoWay}"
TextAlignment="Center"/>
<TextBlock Foreground="Red" TextAlignment="Center" HorizontalAlignment="Center"></TextBlock>
<StackPanel Orientation="Horizontal" HorizontalAlignment="Center">
<Button Style="{StaticResource MaterialDesignFlatButton}"
cal:Message.Attach="[Event Click]=[Action BtnConnect()]"
IsDefault="True"
Margin="0 8 8 0">
<Button.CommandParameter>
<system:Boolean xmlns:system="clr-namespace:System;assembly=mscorlib">True</system:Boolean>
</Button.CommandParameter>
Connect
</Button>
</StackPanel>
</StackPanel>
Screenshots.
It will help someone Caliburn.Micro user !
: )