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Type.GetEnumUnderlyingType() Method in C#
The Type.GetEnumUnderlyingType() method in C# is used to return the underlying type of the current enumeration type.
Syntax
Following is the syntax −
public virtual Type GetEnumUnderlyingType ();
Example
Let us now see an example to implement the Type.GetEnumUnderlyingType() method −
using System;
public class Demo {
enum Vehicle {Car, Bus, Bike, Airplane}
public static void Main(){
try {
Vehicle v = Vehicle.Bike;
Type type = v.GetType();
string[] str = type.GetEnumNames();
Console.WriteLine("GetEnumName() to return the constant name = " + str);
Type type2 = type.GetEnumUnderlyingType();
Console.Write("Enum Underlying type = "+type2);
Console.WriteLine("
Listing constants ..");
for (int i = 0; i < str.Length; i++)
Console.Write("{0} ", str[i]);
}
catch (ArgumentException e){
Console.WriteLine("Not an enum!");
Console.Write("{0}", e.GetType(), e.Message);
}
}
}Output
This will produce the following output −
GetEnumName() to return the constant name = System.String[] Enum Underlying type = System.Int32 Listing constants .. Car Bus Bike Airplane
Example
Let us now see another example to implement the Type.GetEnumUnderlyingType() method −
using System;
public class Demo {
enum Vehicle {Car, Bus, Bike, Airplane}
public static void Main(){
try {
Type type = typeof(int);
string[] str = type.GetEnumNames();
Console.WriteLine("GetEnumName() to return the constant name = " + str);
Type type2 = type.GetEnumUnderlyingType();
Console.Write("Enum Underlying type = "+type2);
Console.WriteLine("
Listing constants ..");
for (int i = 0; i < str.Length; i++)
Console.Write("{0} ", str[i]);
}
catch (ArgumentException e){
Console.WriteLine("Not an enum!");
Console.Write("{0}", e.GetType(), e.Message);
}
}
}Output
This will produce the following output −
Not an enum! System.ArgumentException
Updated on: 06-Nov-2019
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