CODEWITHSUNDEEP
c#c#-8.0nullable-reference-types
TheColonel26
TheColonel26

Reputation: 2728

Converting a nullable reference type to a non-nullable reference type, less verbosely

Is there a way I can convert a nullable reference type to non-nullable reference type in the below example less verbosely?

This would be for when the nullable reference flag for the compiler is enabled.

When the nullable reference type is null, I would like it to throw an exception.

Assembly? EntryAssemblyNullable = Assembly.GetEntryAssembly();

if (EntryAssemblyNullable is null)
{
    throw new Exception("The CLR method of Assembly.GetEntryAssembly() returned null");
}

Assembly EntryAssembly = EntryAssemblyNullable;
var LocationNullable = Path.GetDirectoryName(EntryAssembly.Location);
if (LocationNullable is null)
{
    throw new Exception("The CLR method of Assembly.GetEntryAssembly().Location returned null");
}

string ExecutableLocationPath = LocationNullable;

Upvotes: 11

Views: 823

Answers (1)

Jonathon Chase
Jonathon Chase

Reputation: 9714

You can use throw expressions with the null coalescing operator.

Assembly EntryAssembly = Assembly.GetEntryAssembly() ?? throw new Exception("The CLR method of Assembly.GetEntryAssembly() returned null");

Upvotes: 13

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