private async Task InvokeHandlerMethodAsync()
{
var handler = _handler;
if (_handler != null)
{
var arguments = PrepareArguments(_arguments, handler);
PageHandlerExecutorDelegate executor = null;
for (var i = 0; i < _actionDescriptor.HandlerMethods.Count; i++)
{
if (object.ReferenceEquals(handler, _actionDescriptor.HandlerMethods[i]))
{
executor = CacheEntry.HandlerExecutors[i];
break;
}
}
Debug.Assert(executor != null, "We should always find a executor for a handler");
_diagnosticListener.BeforeHandlerMethod(_pageContext, handler, _arguments, _instance);
_logger.ExecutingHandlerMethod(_pageContext, handler, arguments);
try
{
_result = await executor(_instance, arguments);
_logger.ExecutedHandlerMethod(_pageContext, handler, _result);
}
finally
{
_diagnosticListener.AfterHandlerMethod(_pageContext, handler, _arguments, _instance, _result);
}
}
// Pages have an implicit 'return Page()' even without a handler method.
if (_result == null)
{
_logger.ExecutingImplicitHandlerMethod(_pageContext);
_result = new PageResult();
_logger.ExecutedImplicitHandlerMethod(_result);
}
// Ensure ViewData is set on PageResult for backwards compatibility (For example, Identity UI accesses
// ViewData in a PageFilter's PageHandlerExecutedMethod)
if (_result is PageResult pageResult)
{
pageResult.ViewData = pageResult.ViewData ?? _pageContext.ViewData;
}
}
private static PageHandlerExecutorDelegate[] GetHandlerExecutors(CompiledPageActionDescriptor actionDescriptor)
{
if (actionDescriptor.HandlerMethods == null || actionDescriptor.HandlerMethods.Count == 0)
{
return(Array.Empty <PageHandlerExecutorDelegate>());
}
var results = new PageHandlerExecutorDelegate[actionDescriptor.HandlerMethods.Count];
for (var i = 0; i < actionDescriptor.HandlerMethods.Count; i++)
{
results[i] = ExecutorFactory.CreateExecutor(actionDescriptor.HandlerMethods[i]);
}
return(results);
}
private async Task InvokeHandlerMethodAsync()
{
var handler = _handler;
if (_handler != null)
{
var arguments = PrepareArguments(_arguments, handler);
PageHandlerExecutorDelegate executor = null;
for (var i = 0; i < _actionDescriptor.HandlerMethods.Count; i++)
{
if (object.ReferenceEquals(handler, _actionDescriptor.HandlerMethods[i]))
{
executor = CacheEntry.HandlerExecutors[i];
break;
}
}
Debug.Assert(executor != null, "We should always find a executor for a handler");
_diagnosticSource.BeforeHandlerMethod(_pageContext, handler, _arguments, _instance);
_logger.ExecutingHandlerMethod(_pageContext, handler, arguments);
try
{
_result = await executor(_instance, arguments);
_logger.ExecutedHandlerMethod(_pageContext, handler, _result);
}
finally
{
_diagnosticSource.AfterHandlerMethod(_pageContext, handler, _arguments, _instance, _result);
}
}
// Pages have an implicit 'return Page()' even without a handler method.
if (_result == null)
{
_result = new PageResult();
}
}
private async Task InvokeHandlerMethodAsync()
{
var handler = _handler;
if (_handler != null)
{
var arguments = PrepareArguments(_arguments, handler);
PageHandlerExecutorDelegate executor = null;
for (var i = 0; i < _actionDescriptor.HandlerMethods.Count; i++)
{
if (object.ReferenceEquals(handler, _actionDescriptor.HandlerMethods[i]))
{
executor = CacheEntry.HandlerExecutors[i];
break;
}
}
Debug.Assert(executor != null, "We should always find a executor for a handler");
_diagnosticSource.BeforeHandlerMethod(_pageContext, handler, _arguments, _instance);
_logger.ExecutingHandlerMethod(_pageContext, handler, arguments);
try
{
_result = await executor(_instance, arguments);
_logger.ExecutedHandlerMethod(_pageContext, handler, _result);
}
finally
{
_diagnosticSource.AfterHandlerMethod(_pageContext, handler, _arguments, _instance, _result);
}
}
// Pages have an implicit 'return Page()' even without a handler method.
if (_result == null)
{
_result = new PageResult();
}
// We also have some special initialization we need to do for PageResult.
if (_result is PageResult pageResult)
{
// If we used a PageModel then the Page isn't initialized yet.
if (_viewContext == null)
{
_viewContext = new ViewContext(
_pageContext,
NullView.Instance,
_pageContext.ViewData,
_tempDataFactory.GetTempData(_pageContext.HttpContext),
TextWriter.Null,
_htmlHelperOptions);
_viewContext.ExecutingFilePath = _pageContext.ActionDescriptor.RelativePath;
}
if (_page == null)
{
_page = (PageBase)CacheEntry.PageFactory(_pageContext, _viewContext);
}
pageResult.Page = _page;
pageResult.ViewData = pageResult.ViewData ?? _pageContext.ViewData;
}
}