# Class HelperEnum

OptimaJet.Workflow.Core.Helpers.HelperEnum

Provides helpers for validating, inspecting, parsing, and presenting enumeration values.

Namespace: [OptimaJet.Workflow.Core.Helpers](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Helpers/)

```csharp
public static class HelperEnum
```

## Methods

`public static bool IsEnumType<TEnum>() where TEnum : struct` 

Determines whether `TEnum` is an enumeration type.

### Returns

| Type | Description |
| --- | --- |
| `Boolean` | [true](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool) if `TEnum` is an enumeration type; otherwise, [false](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool). |

`public static bool IsEnumType(Type enumType)` 

Determines whether a [Type](https://learn.microsoft.com/dotnet/api/system.type) represents an enumeration.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `enumType` | `Type` | The [Type](https://learn.microsoft.com/dotnet/api/system.type) to examine. |

### Returns

| Type | Description |
| --- | --- |
| `Boolean` | [true](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool) if `enumType` is not [null](https://learn.microsoft.com/dotnet/csharp/language-reference/keywords/null) and represents an enumeration; otherwise, [false](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool). |

`public static bool Contains<TEnum>(string value, bool Exeption = true) where TEnum : struct` 

Determines whether `TEnum` defines the member name supplied in `value`.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `value` | `String` | The member name to find. |
| `Exeption` | `Boolean` | [true](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool) to let [Enum.IsDefined(Type, object)](https://learn.microsoft.com/dotnet/api/system.enum.isdefined) validate `TEnum` when a nonempty name is tested; [false](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool) to return [false](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool) when `TEnum` is not an enumeration type. |

### Returns

| Type | Description |
| --- | --- |
| `Boolean` | [true](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool) if `value` is not empty and names a defined member; otherwise, [false](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool). |

`public static bool Contains(Type enumType, string value, bool Exeption = true)` 

Determines whether an enumeration type defines the member name supplied in `value`.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `enumType` | `Type` | The [Type](https://learn.microsoft.com/dotnet/api/system.type) to inspect. |
| `value` | `String` | The member name to find. |
| `Exeption` | `Boolean` | [true](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool) to let [Enum.IsDefined(Type, object)](https://learn.microsoft.com/dotnet/api/system.enum.isdefined) validate `enumType` when a nonempty name is tested; [false](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool) to return [false](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool) when `enumType` is [null](https://learn.microsoft.com/dotnet/csharp/language-reference/keywords/null) or is not an enumeration type. |

### Returns

| Type | Description |
| --- | --- |
| `Boolean` | [true](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool) if `value` is not empty and names a defined member of `enumType`; otherwise, [false](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool). |

`public static string GetName<TEnum>(TEnum value) where TEnum : struct` 

Gets the declared name associated with an enumeration value.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `value` | `{TEnum}` | The enumeration value whose name to retrieve. |

### Returns

| Type | Description |
| --- | --- |
| `String` | The declared name associated with `value`, or [null](https://learn.microsoft.com/dotnet/csharp/language-reference/keywords/null) if no name is defined. |

`public static string GetName<TEnum>(Type enumType, TEnum value) where TEnum : struct` 

Gets the declared name associated with a value in a specified enumeration type.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `enumType` | `Type` | The enumeration [Type](https://learn.microsoft.com/dotnet/api/system.type) to inspect. |
| `value` | `{TEnum}` | The value whose name to retrieve. |

### Returns

| Type | Description |
| --- | --- |
| `String` | The declared name associated with `value` in `enumType`, or [null](https://learn.microsoft.com/dotnet/csharp/language-reference/keywords/null) if no name is defined. |

`public static string Name(this Enum enumType)` 

Gets the declared name associated with an enumeration value.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `enumType` | `Enum` | The [Enum](https://learn.microsoft.com/dotnet/api/system.enum) value whose name to retrieve. |

### Returns

| Type | Description |
| --- | --- |
| `String` | The declared name associated with `enumType`, or [null](https://learn.microsoft.com/dotnet/csharp/language-reference/keywords/null) if no name is defined. |

`public static string UpperName(this Enum enumType)` 

Gets the declared name associated with an enumeration value and converts it to uppercase according to the current culture.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `enumType` | `Enum` | The [Enum](https://learn.microsoft.com/dotnet/api/system.enum) value whose name to retrieve. |

### Returns

| Type | Description |
| --- | --- |
| `String` | The uppercase form of the declared name associated with `enumType`. |

`public static List<string> GetNames<TEnum>(bool Exeption = true) where TEnum : struct` 

Gets the names of all members declared by `TEnum`.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `Exeption` | `Boolean` | [true](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool) to let [Enum.GetNames(Type)](https://learn.microsoft.com/dotnet/api/system.enum.getnames) validate `TEnum`; [false](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool) to return [null](https://learn.microsoft.com/dotnet/csharp/language-reference/keywords/null) when `TEnum` is not an enumeration type. |

### Returns

| Type | Description |
| --- | --- |
| `List<String>` | A list of declared member names, or [null](https://learn.microsoft.com/dotnet/csharp/language-reference/keywords/null) when `TEnum` is not an enumeration type and `Exeption` is [false](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool). |

`public static List<string> GetNames(Type enumType, bool Exeption = true)` 

Gets the names of all members declared by an enumeration type.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `enumType` | `Type` | The enumeration [Type](https://learn.microsoft.com/dotnet/api/system.type) to inspect. |
| `Exeption` | `Boolean` | [true](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool) to let [Enum.GetNames(Type)](https://learn.microsoft.com/dotnet/api/system.enum.getnames) validate `enumType`; [false](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool) to return [null](https://learn.microsoft.com/dotnet/csharp/language-reference/keywords/null) when `enumType` is [null](https://learn.microsoft.com/dotnet/csharp/language-reference/keywords/null) or is not an enumeration type. |

### Returns

| Type | Description |
| --- | --- |
| `List<String>` | A list of declared member names, or [null](https://learn.microsoft.com/dotnet/csharp/language-reference/keywords/null) when `enumType` is invalid and `Exeption` is [false](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool). |

`public static List<string> GetNames<TEnum>(List<TEnum> enumValues, bool Exeption = true) where TEnum : struct` 

Converts the supplied enumeration values to their declared names.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `enumValues` | `List<TEnum>` | The enumeration values to convert. |
| `Exeption` | `Boolean` | [true](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool) to let enumeration name retrieval validate `TEnum`; [false](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool) to return [null](https://learn.microsoft.com/dotnet/csharp/language-reference/keywords/null) when `TEnum` is not an enumeration type. |

### Returns

| Type | Description |
| --- | --- |
| `List<String>` | A list containing one name for each value in `enumValues`, or [null](https://learn.microsoft.com/dotnet/csharp/language-reference/keywords/null) when `TEnum` is not an enumeration type and `Exeption` is [false](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool). An entry is [null](https://learn.microsoft.com/dotnet/csharp/language-reference/keywords/null) when its value has no declared name. |

`public static List<TEnum> GetValues<TEnum>(bool Exeption = true) where TEnum : struct` 

Gets the values declared by `TEnum`.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `Exeption` | `Boolean` | [true](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool) to let [Enum.GetValues(Type)](https://learn.microsoft.com/dotnet/api/system.enum.getvalues) validate `TEnum`; [false](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool) to return [null](https://learn.microsoft.com/dotnet/csharp/language-reference/keywords/null) when `TEnum` is not an enumeration type. |

### Returns

| Type | Description |
| --- | --- |
| `List<TEnum>` | A list of declared enumeration values, or [null](https://learn.microsoft.com/dotnet/csharp/language-reference/keywords/null) when `TEnum` is not an enumeration type and `Exeption` is [false](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool). |

`public static List<TEnum> GetValues<TEnum>(Type enumType, bool Exeption = true) where TEnum : struct` 

Gets the values declared by a specified enumeration type that are assignable to `TEnum`.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `enumType` | `Type` | The enumeration [Type](https://learn.microsoft.com/dotnet/api/system.type) whose values to retrieve. |
| `Exeption` | `Boolean` | [true](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool) to let [Enum.GetValues(Type)](https://learn.microsoft.com/dotnet/api/system.enum.getvalues) validate `enumType`; [false](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool) to return [null](https://learn.microsoft.com/dotnet/csharp/language-reference/keywords/null) when `enumType` is [null](https://learn.microsoft.com/dotnet/csharp/language-reference/keywords/null) or is not an enumeration type. |

### Returns

| Type | Description |
| --- | --- |
| `List<TEnum>` | A list of values from `enumType` that are assignable to `TEnum`, or [null](https://learn.microsoft.com/dotnet/csharp/language-reference/keywords/null) when `enumType` is invalid and `Exeption` is [false](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool). |

`public static List<TEnum> GetValuesWithoutDefault<TEnum>(bool Exeption = true, TEnum defaultValue = default) where TEnum : struct` 

Gets the values declared by `TEnum`, excluding values equal to `defaultValue`.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `Exeption` | `Boolean` | [true](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool) to validate `TEnum` during value retrieval; [false](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool) to return [null](https://learn.microsoft.com/dotnet/csharp/language-reference/keywords/null) when `TEnum` is not an enumeration type. |
| `defaultValue` | `{TEnum}` | The value to exclude. |

### Returns

| Type | Description |
| --- | --- |
| `List<TEnum>` | A list of declared values that are not equal to `defaultValue`, or [null](https://learn.microsoft.com/dotnet/csharp/language-reference/keywords/null) when `TEnum` is not an enumeration type and `Exeption` is [false](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool). |

`public static bool ValidateEnumInDictionary<TEnum, TValue>(IDictionary<TEnum, TValue> dictionary, bool withExceptions, out List<string> notExists) where TEnum : struct` 

Validates that a dictionary contains a key for every value declared by `TEnum` except its default value.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `dictionary` | `IDictionary<TEnum, TValue>` | The dictionary to validate. |
| `withExceptions` | `Boolean` | [true](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool) to throw when the first required key is missing; [false](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool) to collect the names of all missing keys. |
| `notExists` | `List<String>` | When this method returns, the declared names of required enumeration values that are not keys in `dictionary`. |

### Returns

| Type | Description |
| --- | --- |
| `Boolean` | [true](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool) if every required enumeration value is present as a key; otherwise, [false](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool). |

### Exceptions

| Type | Description |
| --- | --- |
| `KeyNotFoundException` | `withExceptions` is [true](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool) and a required enumeration value is not a key in `dictionary`. |

`public static List<TEnum> GetValuesWithout<TEnum>(List<TEnum> excludedElements, bool withoutDefault, bool Exeption = true) where TEnum : struct` 

Gets the values declared by `TEnum`, excluding the values in `excludedElements`.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `excludedElements` | `List<TEnum>` | The values to exclude. |
| `withoutDefault` | `Boolean` | [true](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool) to also exclude the default value of `TEnum`; otherwise, [false](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool). |
| `Exeption` | `Boolean` | [true](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool) to validate `TEnum` during value retrieval; [false](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool) to return [null](https://learn.microsoft.com/dotnet/csharp/language-reference/keywords/null) when `TEnum` is not an enumeration type. |

### Returns

| Type | Description |
| --- | --- |
| `List<TEnum>` | A list of declared values not contained in `excludedElements`, or [null](https://learn.microsoft.com/dotnet/csharp/language-reference/keywords/null) when `TEnum` is not an enumeration type and `Exeption` is [false](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool). |

### Remarks

If `withoutDefault` is [true](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool), the method adds the default value of `TEnum` to `excludedElements` when it is not already present.

`public static List<string> GetNamesWithout<TEnum>(List<TEnum> excludedElements, bool withoutDefault, bool Exeption = true) where TEnum : struct` 

Gets the declared names of `TEnum` values not contained in `excludedElements`.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `excludedElements` | `List<TEnum>` | The values whose names to exclude. |
| `withoutDefault` | `Boolean` | [true](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool) to also exclude the default value of `TEnum`; otherwise, [false](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool). |
| `Exeption` | `Boolean` | [true](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool) to validate `TEnum` during value retrieval; [false](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool) to skip that validation. |

### Returns

| Type | Description |
| --- | --- |
| `List<String>` | A list of declared names for values not contained in `excludedElements`. |

### Exceptions

| Type | Description |
| --- | --- |
| `ArgumentNullException` | `Exeption` is [false](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool) and `TEnum` is not an enumeration type. |

### Remarks

If `withoutDefault` is [true](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool), the method adds the default value of `TEnum` to `excludedElements` when it is not already present.

`public static List<string> GetNamesWithoutDefault<TEnum>(bool Exeption = true, TEnum defaultValue = default) where TEnum : struct` 

Gets the declared names of `TEnum`, excluding the name associated with `defaultValue`.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `Exeption` | `Boolean` | [true](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool) to validate `TEnum` during name retrieval; [false](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool) to return [null](https://learn.microsoft.com/dotnet/csharp/language-reference/keywords/null) when `TEnum` is not an enumeration type. |
| `defaultValue` | `{TEnum}` | The value whose declared name to exclude. |

### Returns

| Type | Description |
| --- | --- |
| `List<String>` | A list of declared names other than the name associated with `defaultValue`, or [null](https://learn.microsoft.com/dotnet/csharp/language-reference/keywords/null) when `TEnum` is not an enumeration type and `Exeption` is [false](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool). |

`public static TEnum GetValue<TEnum>(string value, bool ignoreCase = true, bool Exeption = true) where TEnum : struct` 

Gets the `TEnum` value associated with a declared member name.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `value` | `String` | The declared member name to parse. |
| `ignoreCase` | `Boolean` | [true](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool) to request case-insensitive parsing after `value` passes the case-sensitive defined-name check; otherwise, [false](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool). |
| `Exeption` | `Boolean` | [true](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool) to let [Enum.IsDefined(Type, object)](https://learn.microsoft.com/dotnet/api/system.enum.isdefined) validate `TEnum` when a nonempty name is tested; [false](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool) to return the default value of `TEnum` when it is not an enumeration type. |

### Returns

| Type | Description |
| --- | --- |
| `{TEnum}` | The parsed value, or the default value of `TEnum` when `value` is empty or is not a defined member name. |

`public static bool TryGetValue<TEnum>(string value, out TEnum result, bool ignoreCase = true, bool Exeption = true) where TEnum : struct` 

Attempts to get the `TEnum` value associated with a declared member name.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `value` | `String` | The declared member name to parse. |
| `result` | `{TEnum}` | When this method returns, the parsed value if successful; otherwise, the default value of `TEnum`. |
| `ignoreCase` | `Boolean` | [true](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool) to request case-insensitive parsing after `value` passes the case-sensitive defined-name check; otherwise, [false](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool). |
| `Exeption` | `Boolean` | [true](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool) to let [Enum.IsDefined(Type, object)](https://learn.microsoft.com/dotnet/api/system.enum.isdefined) validate `TEnum` when a nonempty name is tested; [false](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool) to return [false](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool) when `TEnum` is not an enumeration type. |

### Returns

| Type | Description |
| --- | --- |
| `Boolean` | [true](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool) if `value` is a defined member name and was parsed successfully; otherwise, [false](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool). |

`public static List<DropdownValue> ToDropdownList<TEnum>(bool withoutDefault, TEnum defaultValue = default) where TEnum : struct` 

Creates [DropdownValue](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/DropdownValue/) entries for the names declared by `TEnum`, optionally excluding the name associated with a specified value.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `withoutDefault` | `Boolean` | [true](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool) to exclude the name associated with `defaultValue`; otherwise, [false](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool). |
| `defaultValue` | `{TEnum}` | The value whose declared name to exclude when `withoutDefault` is [true](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool). |

### Returns

| Type | Description |
| --- | --- |
| `List<DropdownValue>` | A list of [DropdownValue](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/DropdownValue/) entries whose [DropdownValue.Name](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/DropdownValue/) and [DropdownValue.Value](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/DropdownValue/) properties are set to each included member name. |

`public static List<DropdownValue> ToDropdownListWithout<TEnum>(List<TEnum> values, bool withoutDefault) where TEnum : struct` 

Creates [DropdownValue](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/DropdownValue/) entries for the names declared by `TEnum`, excluding specified values.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `values` | `List<TEnum>` | The values whose names to exclude. |
| `withoutDefault` | `Boolean` | [true](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool) to also exclude the default value of `TEnum`; otherwise, [false](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool). |

### Returns

| Type | Description |
| --- | --- |
| `List<DropdownValue>` | A list of [DropdownValue](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/DropdownValue/) entries whose [DropdownValue.Name](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/DropdownValue/) and [DropdownValue.Value](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/DropdownValue/) properties are set to each included member name. |

### Remarks

If `withoutDefault` is [true](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool), the method adds the default value of `TEnum` to `values` when it is not already present.

`public static List<DropdownValue> ToDropdownList<TEnum>(List<TEnum> excludedElements, bool withoutDefault, TEnum defaultValue = default) where TEnum : struct` 

Creates [DropdownValue](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/DropdownValue/) entries for the names declared by `TEnum`, excluding specified values.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `excludedElements` | `List<TEnum>` | The values whose names to exclude. |
| `withoutDefault` | `Boolean` | [true](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool) to also exclude the default value of `TEnum`; otherwise, [false](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool). |
| `defaultValue` | `{TEnum}` | Unused by the current implementation. |

### Returns

| Type | Description |
| --- | --- |
| `List<DropdownValue>` | A list of [DropdownValue](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/DropdownValue/) entries whose [DropdownValue.Name](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/DropdownValue/) and [DropdownValue.Value](https://api.workflowengine.io/core/OptimaJet.Workflow.Core.Model/DropdownValue/) properties are set to each included member name. |

### Remarks

If `withoutDefault` is [true](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool), the method adds the default value of `TEnum` to `excludedElements` when it is not already present. `defaultValue` does not affect the result.

`public static Dictionary<string, TEnum> ToDictionary<TEnum>(bool withoutDefault, TEnum defaultValue = default) where TEnum : struct` 

Creates a mapping from the declared names of `TEnum` to their values.

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `withoutDefault` | `Boolean` | [true](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool) to exclude values equal to `defaultValue`; otherwise, [false](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool). |
| `defaultValue` | `{TEnum}` | The value to exclude when `withoutDefault` is [true](https://learn.microsoft.com/dotnet/csharp/language-reference/builtin-types/bool). |

### Returns

| Type | Description |
| --- | --- |
| `Dictionary<String, TEnum>` | A mapping from each included declared name to its enumeration value. |

`public static string GetDescription<TEnum>(TEnum value) where TEnum : struct` 

Gets the description assigned to an enumeration member through [DescriptionAttribute](https://learn.microsoft.com/dotnet/api/system.componentmodel.descriptionattribute).

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `value` | `{TEnum}` | The enumeration value whose description to retrieve. |

### Returns

| Type | Description |
| --- | --- |
| `String` | The [DescriptionAttribute.Description](https://learn.microsoft.com/dotnet/api/system.componentmodel.descriptionattribute.description) value, or [null](https://learn.microsoft.com/dotnet/csharp/language-reference/keywords/null) if the member has no [DescriptionAttribute](https://learn.microsoft.com/dotnet/api/system.componentmodel.descriptionattribute). |

`public static string Description(this Enum enumType)` 

Gets the description assigned to an enumeration member through [DescriptionAttribute](https://learn.microsoft.com/dotnet/api/system.componentmodel.descriptionattribute).

### Parameters

| Name | Type | Description |
| --- | --- | --- |
| `enumType` | `Enum` | The [Enum](https://learn.microsoft.com/dotnet/api/system.enum) value whose description to retrieve. |

### Returns

| Type | Description |
| --- | --- |
| `String` | The [DescriptionAttribute.Description](https://learn.microsoft.com/dotnet/api/system.componentmodel.descriptionattribute.description) value, or [null](https://learn.microsoft.com/dotnet/csharp/language-reference/keywords/null) if the member has no [DescriptionAttribute](https://learn.microsoft.com/dotnet/api/system.componentmodel.descriptionattribute). |

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