C#

string invalidChar = @"' ` "" # ";
string[] invChar = invalidChar.Split(' ');

char[] invalidCharacters = { '"', ',', '$', '\'' };

[Flags]
public enum ChangeOptions
{
Orientation = 1,
Size = 2,
Position = 4
}

ChangeOptions opts = ChangeOptions.Size | ChangeOptions.Position;
bool optsContainsSize = ((ChangeOptions.Size & opts) != 0);

public enum MyLongEnum : long
{
 // lots of values
}

[BitFlags]Sometims it is just too early[Flags]
public Enum ChangeOptions{
    Orientation = 1,
    Size = 2,
    Position = 4
}

//--------------------------------------------------------------------------------
/// <summary>
/// Casts the specified integer to an appropriate enum. If all else fails, 
/// the enum will be returned as the specified default ordinal.
/// </summary>
/// <param name="value">The integer value representing an enumeration element</param>
/// <param name="defaultValue">The default enumertion to be used if the specified "value" 
does not exist in the enumeration definition</param>
/// <returns></returns>
public static T IntToEnum<T>(int value, T defaultValue)
{
	T enumValue = (Enum.IsDefined(typeof(T), value)) ? (T)(object)value : defaultValue;
	return enumValue;
}

ChangeOptions changeOption = IntToEnum(5, ChangeOptions.Orientation)

ChangeOptions changeOption = IntToEnum(2, ChangeOptions.Orientation)