C# Convert String To Enum

Enums are lists of strongly typed constants with members which might be symbolic names, akin to an underlying integral type. Enum base sorts would be modified and member values would be specified. The System.Enum .NET Framework Class Library variety is the bottom class of enum types.

It comprises techniques that help you work with enums in several ways, corresponding to working with an inventory of names or values, changing from worth to name, and changing from identify to value. For extra information on the System.Enum type, see the .NET Framework SDK documentation. A generic requirement with enums is to transform between the enum and a variable of its base type. For example, in case you're getting enter within the shape of an int from a consumer or a file stream, then you definitely can forged it to an enum and use it in a significant means in your program. You may get an entire listing of enum member names or enum values. The consumer will discover it helpful when you've got logic that should iterate using each enum member.

Listing 17-3 exhibits find out the way to carry out conversions between enums and their base sorts and the way to make use of the various System.Enum variety members. Here we've now an enum named as Flowers containing a number of constants with their respective values. We have referred to as Enum.Parse() approach to transform the string worth Rose into an enum. In the end, we've now checked if our conversion was victorious or not. Since GetNames returns an array of strings, it can be straightforward to make use of in a loop declaration corresponding to foreach. Something you might be interested by within the code above is the second parameter to the WriteLine method's format string.

Given the enum kind and a string illustration of the member name, you need to use the Enum.Parse technique to get the underlying worth of that member. Considering the Volume enum's base kind is the byte, the return worth from Enum.Parse should be forged to a byte earlier than the assignment. That forces the numeric illustration of the enum worth to appear.

After this system shows a menu, it prompts the consumer for a variety within the shape of a quantity . When the consumer makes a variety and presses the Enter key, the code reads the worth with Console.ReadLine, which returns the worth as a string type. Since it is easy to solely forged an int to a Volume enum type, the user's enter have to be transformed from a string to an int with the Int32.Parse method. Converting the int to a Volume enum kind is just a matter of making use of a forged operation within the course of the assignment.

They are fundamentally specific sorts that help you assign symbolic names to integral values. That means an enum of 1 kind will not be implicitly assigned to an enum of yet another type, although the underlying worth of their members is the same. Along the identical lines, integral sorts and enums will not be implicitly interchangeable. All assignments between totally different enum sorts and integral sorts require an specific cast. Use the TryParse() way to transform the string illustration of enumerated constants. The conversion is in direction of an equal enumerated object.

Enum key-phrase is used to declare enumeration, a definite style consisting of a set of named fixed referred to as enumeration. In the above code, we created an extension method, getValue(), that returns a string established on the Enum worth employing the change declaration in C#. The getValue() operate makes use of the change declaration and returns a special string for every worth of our specified Enum. We can use Enum.GetName static way to transform an enum worth to a string. The following code makes use of Enum.GetName static way that takes two arguments, the enum style and the enum value.

Here, I've used typeof operator to get the kind of the enum and exceeded one enum worth that I need to transform to string. Method Description Enum.TryParse() Converts the string illustration of a number of enum member names or numeric values to an equal enum objects. It returns true if the conversion succeeded and false if failed. It is suggested to make use of the Enum.TryParse() over Enum.Parse() method. Enum.Parse() Converts the string illustration of a number of enum member identify or numeric worth to an equal enum object.

Given the kind of the enum, the GetValues approach to System.Enum will return an array of the given enum's base type. While iterating by this list, every member is printed to the console displaying its worth and name. The identify is obtained by the use of the GetName approach to System.Enum. That accepts an enum kind and a worth for which to get the corresponding name. An enum is usually specified as proven in Listing 17-1 however could also be custom-made by altering its base kind and member values. This default could also be modified by specifying a base when declaring the enum.

You would specify a unique base if the enum was used extensively and there was a chance for area financial savings by choosing a smaller type. Valid base sorts embody byte, sbyte, short, ushort, int, uint, long, and ulong. An enumeration style offers an effective method to outline a set of named integral constants which can be assigned to a variable to make programming clear, comprehensible and manageable. There are techniques of using, like techniques to make use of enum in change and case statement, techniques to transform a textual content to enum or wide variety to enum to compare, we'll talk about right right right here all these factors in detail. Above, enum object shops two varieties of values - one style shops index and enum strings, different style shops reverse of knowledge like string and enum. The easiest method to transform enum values into string illustration is through the use of a change statement.

A known different to string enum in C# is to create a category with fixed strings. This is preferable since it makes the intent of every fixed clearer, and in addition permits you to add strategies or different prolonged functionality. If the string conversion is successfull the tactic returns true or else false. The out parameter comprises the changed enum object. In the above example, the Enum.Parse() way converts the string worth day1 to enumeration variety and returns the consequence as an enumeration object.

The boolean parameter specifies if the operation is case-insensitive. Pass true to disregard case to match string and enum member values. Now we will cross the above changed enum from string to our methodology i.e., returnDayOfTime which accepts enum object as parameter.

As the return style is object so we have to forged it to the right enum type.The output of the above conversion is an enum having worth Manager. In the above code, I've used Enum.GetNames methodology that returns all enum values. I've used a foreach loop to iterate by using the enum values and add them to a DropDownList control. To convert string to enum use static methodology Enum.Parse. Parameters of this methodology are enum type, the string worth and optionally indicator to disregard case. The Enum.TryParse() methodology returns a boolean to point regardless of whether the required string is transformed to enum or not.

Returns true if the conversion succeeded; otherwise, returns false. The consequence can be saved in an out parameter consequence if the conversion succeded. It certainly not throws exceptions if the conversion fails; instead, it returns false.

If we had omitted the byte cast, the output can be the Volume enum member. That would then be changed to a string illustration of the member name, not what the code meant to show. Whenever there are conditions the place you're applying a set of associated numbers in a program, think about changing these numbers with enums. Listing 17-1 consists of an enum definition and code that makes use of enum in a change statement. Instead of applying the numbers 0, 1, and a couple of within the change statement, the code is extra significant via applying the Volumeenum.

So you could have an inventory of enum values and also you want to convert it to a single string separated by some character. You can convert from and to strings and also you may iterate over the enum values. That's all on How to create Enum from String in Java. This is an exceptionally frequent requirement and Java programmers ought to be conversant in this system to transform String to Enum easily. If you would like an enumeration then it's important to declare an enumeration.

You do not convert whatever to an enum style at run time, any greater than you change whatever to a category or structure. If you would like such an enumeration then your second code snippet is what it's worthwhile to use. This is perhaps considered one of many only strategies because it can be constructed into .NET. It lets you change a string into an enum by matching the given string to the enum merchandise with the identical identify after which returning that enum item. Here is the extension process for HtmlHelper and this process returns enum as JavaScript object string.

In certainly one of my challenge I want some enums outlined in C# to ready additionally for JavaScript code. After some fast analysis in web I got here out with basic and straightforward extension system to transform C# enums to JavaScript. Enums lend themselves to extra maintainable code simply because they're symbolic, permitting you to work with integral values however making use of a significant identify to do so.

Enums make working with strongly typed constants by way of symbolic names easy. The enum key-phrase in C# declares an inventory of named integer constants. An enum may be outlined in a namespace, construction or class. However, it really is best to outline it in a namespace in order that each one the courses can entry it. Casting enums can get tough in C# so we desired to supply several examples to assist make clear the situation. Below we're employing an straightforward enum to illustrate the way to forged an int to a enum, enum to an int.

We may additionally go over the best way to envision if an enum exists given an integer or string and the way to iterate enums. Check out our examples under on the best way to transform int to enum utilizing C#. I suppose it might be simpler to create a struct and have public static fixed strings. In this example, you discovered the best way to transform enum kind to string and numbers in Typescript with an example. The valueOf() approach to the Enum class in java accepts a String worth and returns an enum fixed of the required type. Now, we'll verify the best way to transform listing of string to enum in C#.

I even have a created enum object of variety Day, which represents time of Day and a way returnDayOfTime(). And then forged it to the enum object to get enum variety of string. Converting string to enum in C# is straightforward employing the static Parse techniques of the Enum class. Before calling Enum.TryParse, you can actually declare a variable of the enum type. It is beneficial in packages that settle for consumer enter as a string, however keep the worth internally as an enum.

In the above code, we created an extension method, getDescription, that returns the Enum worth description in C#. This process works completely fine, however it's a bit of complex. In certainly one of many prior posts I even have defined how we will use Enums in C#, now on this article, I even have defined with an example, learn how to transform string to enum or enum to string in C#.

In the instance below, we're implementing reflection inside a static system in order that we will then name this static system to retrieve the right enum merchandise dependent on the given string. We can convert an enum to string by calling the ToString() approach to an Enum. The following code instance exhibits the way to transform an enum to a string in C#. Now, as an instance I desire to present the string values of an enum in a manipulate reminiscent of a dropdown.

For that, I should convert Enum values to string values. For example, I need to add all enum string values to a DropDownList. This code instance exhibits the best way to transform an enum to a string in C#.

Code additionally exhibits the way to transform a string to an enum in C#. To convert enum to string use purely Enum.ToStringmethod. This instance exhibits the way to transform enum values to string and reversely. Note that the string worth should match with any member names; in any different case it should throw an exception.

Use the Enum.IsDefined() process to ascertain if a given string identify or integer worth is outlined in a specified enumeration. @SollyM I'd say that is a horrible inspiration trigger then this extension process will apply to all object types. Two extension methods, one for string and one for int, could be cleaner and far safer in my opinion. This additionally consists of C#7's new inline out variables, so this does the try-parse, conversion to the specific enum kind and initialises+populates the myStatus variable.

I thought of additionally extension process for enum however deserted the thought as a result of extension techniques for HtmlHelper are extra preferred and builders are extra acquainted with these. For noobies it's additionally the primary object behind views they will look at various for helper methods. Enum varieties implicitly inherit the System.Enum sort within the Base Class Library . This additionally signifies that you simply could use the members of System.Enum to function on enum types. This part does simply that and reveals helpful suggestions and methods to make use of with enums in your programs.

Another modification you possibly can also make to an enum is to set the worth of an enum member. By default, the primary member of an enum takes the worth of zero. If this worth doesn't make sense in your enum, you possibly can change it to at least one or another number. Additionally, you possibly can change any of the members of an enum to any worth that's legitimate for its base type.

Unassigned enum members have a worth that's one greater than their predecessor. Listing 17-2 reveals tips on how to switch the bottom kind and member values of an enum. This enum is of kind Volume, and we use it to declare the myVolume variable within the Main method.

Since an enum is a worth type, we will assign a worth (Volume.Medium) to it directly, corresponding to the straightforward sorts corresponding to int or double. Once the myVolume variable is said and initialized, it's utilized within the change statement. Each of the case statements characterize a singular member of the Volume enum. Enums are worth types, which suggests they comprise their very very own value, can't inherit or be inherited from, and task copies the worth of 1 enum to another. You will see on this lesson and elsewhere that enums are used and referred to in each decrease case, enum, and higher case, Enum. The relationship between the 2 is that the C# type, enum, inherits the Base Class Library type, Enum.