Current AutoRebuild implementation crash if trying to launch the app hosted in IIS.
Current found hierarchy:
- svchost
|
-- w3wp
|
-- VSIISExeLauncher
|
-- dotnet
devenv is not found of course in this scenario.
Even if the try catch seem to be good, when accessing the root process svchost, this exception is thrown:
System.ComponentModel.Win32Exception : 'Access denied'
in the 'while' statement
Due to this behavior, the try/catch need to be bubbled on the top of the while loop in order to have the correct behavior in case of fatal failure.
This change adds `Action` to the set of types that have an overload on
RenderTreeBuilder. Additionally, we special case `Action` in the runtime
because passing the event args via DynamicInvoke() would throw.
Finally, reverted some of the clutter introduced by the first pass of
the event handler feature.
This is work in progress right now. We'll need to update again once
there's a build with the Action fix in it, and again to point to the
final package versions.
Just getting things staged ahead of time.
* Update Mono to 078d5147836
* Update driver.c to match updated Mono version
* Rebuild Mono binaries
* Update dependency resolution baseline to match updated Mono BCL
* Add E2E test for new RuntimeInformation values
This change removes support for the old syntax used for event handlers
and two-way binding.
See the relevant issues for details on the new features and
improvements:
bind https://github.com/aspnet/Blazor/issues/409
event handlers https://github.com/aspnet/Blazor/issues/503
Along with this change we've removed a few additional things Blazor
could do that aren't part of Razor's usual syntax.
----
The features that was used to make something like:
```
<button @onclick(...) />
```
is an expression that's embedded in a an element's attribute. This
feature might be useful in the future if we want to support 'splatting'
arbitrary attributes into a tag, but the runtime support for this isn't
accessible outside the Blazor core.
----
The features that implement:
```
<button onclick=@{ } />
```
have been removed in favor of a better design for lambdas, method group
conversions and other things for event handler attributes.
use `<button onclick=@(x => ...} />` instead.
We think is a better approach in general, because we want the app
developer to write and see the parameter list.
----
Both syntactic features that have been removed have dedicated error
messages in the compiler. If you're porting old code it should help you
figure out what to do.
* Improve support for more types of event handlers
Improves support for for other types of event handlers with eventargs
types derived from UIEventArgs. Additionally fleshes out the set of
event handler types.
This change improves support for using more specific event handler types
like:
```
<button onclick="@Clicked" />
@functions {
public void Clicked(UIMouseEventArgs e) { ... }
}
```
And:
```
builder.AddAttribute(12, "onkeypressed", KeyPressed);
...
void KeyPressed(UIKeyboardEventArgs e) { ... }
```
In particular what got better is:
- overload resolution for the AddAttribute method
- performance of different cases for AddAttribute
-----
The runtime now treats delegates as one of three types:
- arbitrary delegate: not attached to DOM events, not tracked by
renderer
- UIEventHandler: can attach to DOM events, tracked by renderer, first
class in IHandleEvents
- UIEventHandler-like: can attach to DOM events, tracked by renderer,
requires some special runtime support.
The set of overloads on AddAttribute has been tuned with a few specific
cases in mind.
Lambda expressions in an attribute will be inferred as UIEventHandler
unless the compiler does something more specific. So for instance,
passing a lambda as an attribute value for a component, where the
component doesn't define a matching attribute, will always be inferred
as UIEventHandler.
We now support method-group to delegate conversion for methods that
accept a derived UIEventArgs type. This means you can use a signature
like `void KeyPressed(UIKeyboardEventArgs e)` without any compiler
magic, and this will work in the runtime as long as the event type
produced by the runtime matches.
We also allow user-defined UIEventArgs-derived types. There's a pattern
for this and it requires defining an extension method and delegate type.
The method-group to delegate conversion part required some doing. It
doesn't play well with generics (Action<T> where T : UIEventArgs)
doesn't work at all. Adding more actual overloads (as opposed to
extensions) would cause lambda cases we want to work to be ambiguous.
----
The performance win here is to remove the need for a 'wrapper' delegate
created by the event handler tag helper code. This wrapper is now
created by the runtime, but only *after* we have checked the frame for
changes. This requires more heavy lifting in the runtime, but has the
advantage of producing no-op diffs as often as possible.
You will still get some inefficient behavior if your component uses a
capturing lambda in an event handler, so don't do that.
* Add selenium logs to test output
* Minor feedback
* WIP
This is the *new* and most correct feed for our developer builds.
Leaving the old ones there for now because the other ASP.NET Repos also
left them there.
This change adds support for mapping DOM event handlers as tag helpers
that function in a bi-modal way.
This is a new first-class feature for DOM events, and replaces a few
workarounds like using `@onclick(...)` or `click=@{ ... }`. I haven't
removed those things yet, this is a first pass to get the new support
in, we'll remove those things when we're totally satisfied.
When used with a string like `<button onclick="foo" />` the result is
a simple HTML attribute .
But when used with an implicit expression like
`<button onclick="@Foo" />` or
`<button onclick="@(x => Clicked = true)" />` a C# function is bound to
the click event from the DOM.
Daniel Roth
Zachary Becknell
Steve Sanderson
Ryan Nowak
Guillaume ZAHRA
Ryan Nowak
Luke Latham
flash2048
chassq