Class ExceptionError

Namespace
REslava.Result
Assembly
REslava.Result.dll

Wraps a .NET Exception as a typed error reason. Automatically captures the exception type, stack trace, and inner exception message as tags. Produced automatically by Try(Action, Func<Exception, IError>?) and TryAsync(Func<Task>, Func<Exception, IError>?, CancellationToken).

public class ExceptionError : Reason<ExceptionError>, IError, IReason
Inheritance
ExceptionError
Implements
Inherited Members
Extension Methods

Examples

var result = Result<string>.Try(() => File.ReadAllText("config.json"));
if (result.IsFailure)
{
    var ex = result.Errors.OfType<ExceptionError>().First();
    Console.WriteLine(ex.Exception.Message);      // original exception message
    Console.WriteLine(ex.Tags["ExceptionType"]);  // e.g. "FileNotFoundException"
}

Constructors

ExceptionError(Exception)

Creates an error from an exception, using the exception's own message.

public ExceptionError(Exception exception)

Parameters

exception Exception

The exception to wrap. Must not be null.

ExceptionError(string, Exception)

Creates an error with a custom message, preserving the original exception for diagnostics.

public ExceptionError(string message, Exception exception)

Parameters

message string

Custom human-readable error message.

exception Exception

The exception to wrap. Must not be null.

Properties

Exception

Gets the original .NET exception that caused this error.

public Exception Exception { get; init; }

Property Value

Exception

Methods

CreateNew(string, ImmutableDictionary<string, object>)

Factory method for creating new instances (maintains immutability). Must be implemented by derived classes.

protected override ExceptionError CreateNew(string message, ImmutableDictionary<string, object> tags)

Parameters

message string
tags ImmutableDictionary<string, object>

Returns

ExceptionError
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