A .NET framework 3.5 way to mimic the FX4 "Has Flag" method. - CSharp System

CSharp examples for System:Enum

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Description

A .NET framework 3.5 way to mimic the FX4 "Has Flag" method.

Demo Code


using System.Text;
using System.Linq;
using System;//from  w ww  .  j a  va 2  s . c  om

public class Main{
        /// <summary>
        ///     A .NET framework 3.5 way to mimic the FX4 "Has Flag" method.
        /// </summary>
        /// <param name="variable">The tested enum</param>
        /// <param name="value">The value to test</param>
        /// <returns>True if the flag is set, otherwise false</returns>
        public static bool HasFlag(this Enum variable, Enum value)
        {
            // check if from the same type.
            if (variable.GetType() != value.GetType())
                throw new ArgumentException("The checked flag is not from the same type as the checked variable.");

            Convert.ToUInt64(value);
            ulong num = Convert.ToUInt64(value);
            ulong num2 = Convert.ToUInt64(variable);

            return (num2 & num) == num;
        }
}

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