Use Catcher.Run(() => ...) for preventing a task to throw during a "one-fails-all" operation like Task.WhenAll or AwaitMultiple.
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$ dotnet add package TaskExceptionCatcherReadme
TaskExceptionCatcher
Use Catcher.Run for preventing a task to throw during a "one-fails-all" operation like Task.WhenAll or AwaitMultiple.
How to use and why
This example explains the syntax, but may not be useful beyond that:
var result = await Catcher.Run(() => ThrowOrNotAsync());
if (result.Exception != null)
{
// this point will be reached in case of an exception.
}
else
{
var taskResultValue = result.Value.
}
When using AwaitMultiple or Task.WhenAll, an exception is thrown in case one task fails and you cannot access the values of the not-failed tasks.
In some cases, that may not be desired: you may want to continue if "getting value b" fails:
var (a, catchResultB, c) = await Tasks(
StartTaskAAsync(),
Catcher.Run(() => StartTaskBAsync()),
StartTaskCAsync());
if (catchResultB.Exception is { } exception)
{
// no problem!
}
else
{
var b = catchResultB.Value;
// use `b`.
}
// use `a` and `c`.
Get it
Available via NuGet.