C# | Type.GetEnumName() Method
Type.GetEnumName(Object) Method is used to return the name of the constant which has the specified value for the current enumeration type.
Syntax:
public virtual string GetEnumName (object value);
Here, it takes the value whose name is to be retrieved.
Return Value: This method returns the name of the member of the current enumeration type which has the specified value. If no such constant is found then it will return null.
Exceptions:
- ArgumentException: If the current type is not an enumeration or value is neither of the current type nor does it have the same underlying type as the current type.
- ArgumentNullException: If value is null.
Below programs illustrate the use of the above-discussed method:
Example 1:
// C# program to demonstrate the// Type.GetEnumName(Object) Methodusing System;using System.Globalization;using System.Reflection; class GFG { // Defining enum ABC enum ABC {A, B, C} // Main Method public static void Main() { // Creating try-catch block // to handle exceptions try { // Creating and initializing object // of ABC with instace of enum ABC ABC a = ABC.A; // Declaring and initializing // object of Type Type type = a.GetType(); string obj = type.GetEnumName(a); Console.WriteLine("Name of constant is: " + obj); } // catch ArgumentNullException here catch (ArgumentNullException e) { Console.Write("Exception Thrown: "); Console.Write("{0}", e.GetType(), e.Message); } }} |
Output:
Name of constant is: A
Example 2: For ArgumentException
// C# program to demonstrate the// Type.GetEnumName(Object) Methodusing System;using System.Globalization;using System.Reflection; class GFG { // Defining enum ABC enum ABC {A, B, C} // Main Method public static void Main() { // Creating try-catch block // to handle exceptions try { // Creating and initializing object // of ABC with instace of enum ABC ABC a = ABC.A; // Declaring and initializing // object of Type Type type = typeof(int); string obj = type.GetEnumName(a); Console.WriteLine("Name of constant is: " + obj); } // catch ArgumentNullException here catch (ArgumentNullException e) { Console.WriteLine("value is null. "); Console.Write("Exception Thrown: "); Console.Write("{0}", e.GetType(), e.Message); } // catch ArgumentException here catch (ArgumentException e) { Console.WriteLine("The current type is not an Enumeration."); Console.Write("Exception Thrown: "); Console.Write("{0}", e.GetType(), e.Message); } }} |
Output:
The current type is not an Enumeration. Exception Thrown: System.ArgumentException
Example 3: For ArgumentNullException
// C# program to demonstrate the// Type.GetEnumName(Object) Methodusing System;using System.Globalization;using System.Reflection; class GFG { // Defining enum ABC enum ABC {A, B, C} // Main Method public static void Main() { // Creating try-catch block // to handle exceptions try { // Creating and initializing object // of ABC with instace of enum ABC ABC a = ABC.A; // Declaring and initializing // object of Type Type type = typeof(int); string obj = type.GetEnumName(null); Console.WriteLine("Name of constant is " + obj); } // catch ArgumentNullException here catch (ArgumentNullException e) { Console.WriteLine("value is null. "); Console.Write("Exception Thrown: "); Console.Write("{0}", e.GetType(), e.Message); } // catch ArgumentException here catch (ArgumentException e) { Console.WriteLine("The current type is not an Enumeration."); Console.Write("Exception Thrown: "); Console.Write("{0}", e.GetType(), e.Message); } }} |
Output:
value is null. Exception Thrown: System.ArgumentNullException
Reference:
