What is the correct exception to throw for unhandled enum values in C#?

When an unhandled enum value is encountered, the recommended practice in C# is to throw an ArgumentException.

The ArgumentException is an exception that indicates that an argument is not valid. This exception is typically thrown when an argument is invalid or does not meet a certain condition.

Here's an example of how to use ArgumentException in a switch statement for handling enum values:

public void Process(MyEnum value)
{
    switch (value)
    {
        case MyEnum.Value1:
            // Handle Value1
            break;
        case MyEnum.Value2:
            // Handle Value2
            break;
        default:
            throw new ArgumentException($"Invalid value: {value}", nameof(value));
    }
}

In this example, the Process method takes an enum value called value. The method uses a switch statement to process the value, and throws an ArgumentException with a message indicating that the value is invalid if the value is not handled by the switch statement.

Note that the nameof operator is used to get the name of the argument being checked, which is used in the exception message to identify the argument that caused the exception.

By using ArgumentException, you can provide meaningful error messages to help diagnose problems with invalid input values, and make it easier to write code that handles those errors gracefully.

Examples

C# enum handling: throw exception for unhandled values

Description: This query aims to find the appropriate exception type to throw when encountering an unhandled enum value in C#.
Code Implementation:

// Example code throwing InvalidOperationException for unhandled enum values
using System;

public enum MyEnum { Value1, Value2, Value3 }

public class MyClass
{
    public void MyMethod(MyEnum value)
    {
        switch (value)
        {
            case MyEnum.Value1:
                // Handle Value1
                break;
            case MyEnum.Value2:
                // Handle Value2
                break;
            case MyEnum.Value3:
                // Handle Value3
                break;
            default:
                throw new InvalidOperationException($"Unhandled enum value: {value}");
        }
    }
}

What exception to throw for invalid enum values in C#

Description: This query seeks information on the appropriate exception type to use when encountering invalid or unhandled enum values in C#.
Code Implementation:

// Throwing ArgumentException for invalid enum values in C#
using System;

public enum MyEnum { Value1, Value2, Value3 }

public class MyClass
{
    public void MyMethod(MyEnum value)
    {
        if (!Enum.IsDefined(typeof(MyEnum), value))
        {
            throw new ArgumentException($"Invalid enum value: {value}", nameof(value));
        }

        // Handle valid enum values
    }
}

C# best practice for handling unexpected enum values

Description: This query looks for best practices on handling unexpected enum values in C# code, including the appropriate exception type to throw.
Code Implementation:

// Best practice: Throwing ArgumentOutOfRangeException for unexpected enum values in C#
using System;

public enum MyEnum { Value1, Value2, Value3 }

public class MyClass
{
    public void MyMethod(MyEnum value)
    {
        switch (value)
        {
            case MyEnum.Value1:
                // Handle Value1
                break;
            case MyEnum.Value2:
                // Handle Value2
                break;
            case MyEnum.Value3:
                // Handle Value3
                break;
            default:
                throw new ArgumentOutOfRangeException(nameof(value), value, "Unexpected enum value");
        }
    }
}

Unhandled enum values exception in C#

Description: This query seeks information on how to handle unhandled enum values in C# code, including the appropriate exception type.
Code Implementation:

// Handling unhandled enum values by throwing InvalidOperationException in C#
using System;

public enum MyEnum { Value1, Value2, Value3 }

public class MyClass
{
    public void MyMethod(MyEnum value)
    {
        switch (value)
        {
            case MyEnum.Value1:
                // Handle Value1
                break;
            case MyEnum.Value2:
                // Handle Value2
                break;
            case MyEnum.Value3:
                // Handle Value3
                break;
            default:
                throw new InvalidOperationException("Unhandled enum value");
        }
    }
}

C# enum validation: throwing exception for invalid values

Description: This query explores how to validate enum values in C# code and throw an appropriate exception for invalid values.
Code Implementation:

// Validating and throwing ArgumentException for invalid enum values in C#
using System;

public enum MyEnum { Value1, Value2, Value3 }

public class MyClass
{
    public void MyMethod(MyEnum value)
    {
        if (!Enum.IsDefined(typeof(MyEnum), value))
        {
            throw new ArgumentException("Invalid enum value", nameof(value));
        }

        // Handle valid enum values
    }
}

Proper exception for unexpected enum values in C#

Description: This query seeks to determine the correct exception type to throw for unexpected enum values in C# code.
Code Implementation:

// Using ArgumentOutOfRangeException for unexpected enum values in C#
using System;

public enum MyEnum { Value1, Value2, Value3 }

public class MyClass
{
    public void MyMethod(MyEnum value)
    {
        switch (value)
        {
            case MyEnum.Value1:
                // Handle Value1
                break;
            case MyEnum.Value2:
                // Handle Value2
                break;
            case MyEnum.Value3:
                // Handle Value3
                break;
            default:
                throw new ArgumentOutOfRangeException(nameof(value), value, "Unexpected enum value");
        }
    }
}

C# enum validation exception handling

Description: This query aims to understand how to handle validation exceptions for enum values in C# code.
Code Implementation:

// Handling enum validation exceptions by throwing ArgumentException in C#
using System;

public enum MyEnum { Value1, Value2, Value3 }

public class MyClass
{
    public void MyMethod(MyEnum value)
    {
        if (!Enum.IsDefined(typeof(MyEnum), value))
        {
            throw new ArgumentException("Invalid enum value", nameof(value));
        }

        // Handle valid enum values
    }
}

C# enum switch default case exception

Description: This query looks for guidance on handling default cases in switch statements for enums in C#, including the appropriate exception to throw.
Code Implementation:

// Handling default case in switch statement for enums by throwing InvalidOperationException in C#
using System;

public enum MyEnum { Value1, Value2, Value3 }

public class MyClass
{
    public void MyMethod(MyEnum value)
    {
        switch (value)
        {
            case MyEnum.Value1:
                // Handle Value1
                break;
            case MyEnum.Value2:
                // Handle Value2
                break;
            case MyEnum.Value3:
                // Handle Value3
                break;
            default:
                throw new InvalidOperationException("Unhandled enum value");
        }
    }
}

C# enum validation: proper exception for invalid values

Description: This query seeks information on the proper exception type to use when validating enum values in C# code.
Code Implementation:

// Using ArgumentException for enum validation in C#
using System;

public enum MyEnum { Value1, Value2, Value3 }

public class MyClass
{
    public void MyMethod(MyEnum value)
    {
        if (!Enum.IsDefined(typeof(MyEnum), value))
        {
            throw new ArgumentException("Invalid enum value", nameof(value));
        }

        // Handle valid enum values
    }
}

Unhandled enum value handling in C#

Description: This query explores approaches to handle unhandled enum values in C# code, including the appropriate exception to throw.
Code Implementation:

// Handling unhandled enum values by throwing InvalidOperationException in C#
using System;

public enum MyEnum { Value1, Value2, Value3 }

public class MyClass
{
    public void MyMethod(MyEnum value)
    {
        switch (value)
        {
            case MyEnum.Value1:
                // Handle Value1
                break;
            case MyEnum.Value2:
                // Handle Value2
                break;
            case MyEnum.Value3:
                // Handle Value3
                break;
            default:
                throw new InvalidOperationException("Unhandled enum value");
        }
    }
}

More Tags

bootstrap-grid userform web-mediarecorder visual-studio-debugging browser-refresh fixtures declaration download ms-word validate-request

What is the correct exception to throw for unhandled enum values in C#?

Examples

More Tags

More C# Questions

More Stoichiometry Calculators

More Electronics Circuits Calculators

More Gardening and crops Calculators

More Transportation Calculators

Fitness Calculators

Auto Calculators

Financial Calculators

Date and Time Calculators

Internet Calculators

Pregnancy Calculators

Investment Calculators

Math Calculators

Housing/Building Calculators

Health Calculators

Retirement Calculators

Statistics Calculators

Various Measurements/Units Calculators

Everyday Utility Calculators

Weather Calculators

Real Estate Calculators

Tax and Salary Calculators

Geometry Calculators

Electronics/Circuits Calculators

Transportation Calculators

Entertainment/Anecdotes Calculators