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) Method using 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); } } } |
Name of constant is: A
Example 2: For ArgumentException
// C# program to demonstrate the // Type.GetEnumName(Object) Method using 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); } } } |
The current type is not an Enumeration. Exception Thrown: System.ArgumentException
Example 3: For ArgumentNullException
// C# program to demonstrate the // Type.GetEnumName(Object) Method using 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); } } } |
value is null. Exception Thrown: System.ArgumentNullException
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