private static string GetEnumDisplay <T>(T enumObj, EnumProp enumProp, FieldInfo fieldInfo)
{
var attribArray = GetCustomAttributes(fieldInfo, enumProp);
return(attribArray.Length == 0
? enumObj.ToString()
: GetEnumDisplay(enumProp, attribArray));
}
/// <summary>
/// Retrieves the display name (specified in the <see cref="EnumDisplayNameAttribute" />
/// custom attribute) for the passed in <see cref="System.Enum" /> instance.
/// </summary>
/// <returns>the display name for the specified enum</returns>
/// <remarks>
/// The enum specified must implement the <see cref="EnumDisplayNameAttribute" />
/// custom attribute. If it does not, an empty string is returned
/// </remarks>
/// <param name="enumeratedValue"></param>
/// <param name="enumProp"></param>
/// <returns></returns>
public static string GetEnumDisplayName(System.Enum enumeratedValue, EnumProp enumProp)
{
var fieldInfo = enumeratedValue.GetType().GetField(enumeratedValue.ToString());
var attribArray = GetCustomAttributes(fieldInfo, enumProp);
return(attribArray.Length == 0
? string.Empty
: GetEnumDisplay(enumProp, attribArray));
}
/// <summary>
/// Retrieves the display name (specified in the <see cref="EnumDisplayNameAttribute" />
/// custom attribute) for the passed in <see cref="System.Enum" /> instance.
/// </summary>
/// <param name="enumObj">an Enum whose displayName is being requested</param>
/// <param name="enumProp">and Enum property for display type </param>
/// <returns>the display name for the specified enum</returns>
/// <remarks>
/// The enum specified must implement the <see cref="EnumDisplayNameAttribute" />
/// custom attribute. If it does not, an empty string is returned
/// </remarks>
public static string GetEnumDisplayValue <T>(T enumObj, EnumProp enumProp)
{
if (enumObj is System.Enum == false)
{
throw new ArgumentException("The specified generic type must derive from System.Enum");
}
var fieldInfo = enumObj.GetType().GetField(enumObj.ToString());
if (fieldInfo == null)
{
return(string.Empty);
}
return(GetEnumDisplay(enumObj, enumProp, fieldInfo));
}
public override int GetHashCode()
{
unchecked
{
int result = (StringProp != null ? StringProp.GetHashCode() : 0);
result = (result * 397) ^ IntProp;
result = (result * 397) ^ DoubleProp.GetHashCode();
result = (result * 397) ^ BoolProp.GetHashCode();
result = (result * 397) ^ (ReadOnlyProp != null ? ReadOnlyProp.GetHashCode() : 0);
result = (result * 397) ^ (WriteOnlyProp != null ? WriteOnlyProp.GetHashCode() : 0);
result = (result * 397) ^ (IgnoreProp != null ? IgnoreProp.GetHashCode() : 0);
result = (result * 397) ^ EnumProp.GetHashCode();
result = (result * 397) ^ MappedProp;
result = (result * 397) ^ Field?.GetHashCode() ?? 0;
return(result);
}
}
/// <summary>
/// Gets the field of the specified enum type who's displayName matches the
/// specified enumDisplayValue
/// </summary>
/// <typeparam name="T">
/// the enum type who's field's are decorated with the
/// <see cref="EnumDisplayNameAttribute" />
/// </typeparam>
/// <param name="enumDisplayValue">the displayName to search for</param>
/// <param name="enumProp"></param>
/// <param name="throwExceptionIfNotFound">
/// flag indicating whether or not
/// to throw an exception if no field is found with a displayName that matches
/// the specified displayName
/// </param>
/// <returns>a field of the specified enum Type (T)</returns>
public static T GetEnumValue <T>(string enumDisplayValue, EnumProp enumProp, bool throwExceptionIfNotFound)
{
var retVal = default(T);
var found = false;
if (enumDisplayValue != null)
{
foreach (var fieldInfo in typeof(T).GetFields())
{
if (fieldInfo.FieldType != typeof(T))
{
continue;
}
var attribArray = enumProp == EnumProp.DisplayName
? fieldInfo.GetCustomAttributes(typeof(EnumDisplayNameAttribute), false)
: fieldInfo.GetCustomAttributes(typeof(EnumDisplayCodeAttribute), false);
switch (attribArray.Length)
{
case 0:
continue;
default:
if (enumDisplayValue.ToUpper() ==
(enumProp == EnumProp.DisplayName
? ((EnumDisplayNameAttribute)attribArray[0]).DisplayName.ToUpper()
: ((EnumDisplayCodeAttribute)attribArray[0]).DisplayCode.ToUpper()))
{
found = true;
retVal = (T)fieldInfo.GetValue(fieldInfo);
}
break;
}
}
}
if (!found && throwExceptionIfNotFound)
{
throw new ArgumentException(string.Format("No value of Enum {0} has a display name of {1}",
typeof(T).Name, enumDisplayValue));
}
return(retVal);
}
private static string GetEnumDisplay(EnumProp enumProp, object[] attribArray)
{
switch (enumProp)
{
case EnumProp.DisplayName:
{
var attrib = attribArray[0] as EnumDisplayNameAttribute;
return(attrib != null ? attrib.DisplayName : string.Empty);
}
case EnumProp.DisplayCode:
{
var attrib = attribArray[0] as EnumDisplayCodeAttribute;
return(attrib != null ? attrib.DisplayCode : string.Empty);
}
default:
return(string.Empty);
}
}
private static object[] GetCustomAttributes(FieldInfo fieldInfo, EnumProp enumProp)
{
return(enumProp == EnumProp.DisplayName
? fieldInfo.GetCustomAttributes(typeof(EnumDisplayNameAttribute), false)
: fieldInfo.GetCustomAttributes(typeof(EnumDisplayCodeAttribute), false));
}
/// <summary>
///
/// </summary>
/// <param name="lst"></param>
/// <param name="displayCode"></param>
/// <returns></returns>
/// <exception cref="System.NotImplementedException"></exception>
public static string GetEnumDisplayName <T>(string lst, EnumProp displayCode)
{
var enumratedValue = lst.ToEnum <T>();
return(GetEnumDisplayName(enumratedValue as System.Enum, displayCode));
}
