using System;
using System.ComponentModel;
using System.Diagnostics;
public class EnumFunctions
{
public enum MyEnum : int
{
alfa = 1,
beta = 2,
gamma = 3
}
public enum ProjectTypes
{
Unknown = 0,
Closing = 1,
Generic = 2,
Listing = 3,
Buying = 4
}
enum Color
{
Green,
Yellow,
Red
}
public EnumFunctions()
{
//How to retrieve an Enum member given its integer value
//To retrieve an Enum member given its integer value, cast the integer value to your Enum type:
MyEnum MyEnumVal;
int i;
// Retrieve an enum member by its value
i = 2;
MyEnumVal = (MyEnum)i;
Debug.WriteLine(MyEnumVal.ToString());
// If the specified value is not an enum member, MyEnumVal receives the value anyway
i = 4;
MyEnumVal = (MyEnum)i;
Debug.WriteLine(MyEnumVal.ToString()); // The output is “4″
// Test for allowed enum values
if (!MyEnum.IsDefined(typeof(MyEnum), 4))
Debug.WriteLine(“The value of 4 is not defined in the Enum”);
//How to retrieve an Enum member given its name
//To retrieve an Enum member given its name, use the ConvertFrom() method of the
//TypeConverter class and cast the result to your Enum type:
MyEnumVal = (MyEnum) TypeDescriptor.GetConverter(MyEnumVal).ConvertFrom(“gamma”);
Debug.WriteLine(MyEnumVal.ToString()); // The output is “gamma”
// or
MyEnumVal = (MyEnum) Enum.Parse(typeof(MyEnum), “gamma”);
Debug.WriteLine(MyEnumVal.ToString()); // The output is “gamma”
//Using Enums
switch ((ProjectTypes)Convert.ToInt32(projectTypeID))
{
case ProjectTypes.Buying:
break;
case ProjectTypes.Closing:
break;
case ProjectTypes.Generic:
break;
case ProjectTypes.Listing:
break;
case ProjectTypes.Unknown:
break;
default:
break;
}
// or
ProjectTypes projectType = (ProjectTypes)Enum.Parse(typeof(ProjectTypes), projectTypeID)
// or cast from int to enum like
ProjectTypes pType = (ProjectTypes ) intStatus;
switch (pType)
{
case ProjectTypes.Buying:
fileType = “Buying”;
break;
case ProjectTypes.Closing:
fileType = “Closing”;
break;
//…
default:
break;
}
//C# / CSharp Tutorial » Data Type » enum base type
//Convert enum to int
Color t1 = Color.Green;
Color t2 = Color.Yellow;
Color t3 = Color.Red;
Console.WriteLine(“{0},\t{1}”, t1, (int)t1);
Console.WriteLine(“{0},\t{1}”, t2, (int)t2);
Console.WriteLine(“{0},\t{1}\n”, t3, (int)t3);
}
}
