Entity framework 6 enum string In the Entity Framework Designer, right-click the Name property, select Convert to enum. 1+ supports Value Conversions. You can use the built-in EnumToStringConverter<> to automatically convert an Enum to string, and vice versa. HasConversion<string>(); } The same can be achieved by: See full list on learn. Full source code here. May 27, 2020 · You could find all the model classes (assuming they share a namespace) and then iterate over all of their properties, filter to only properties with an enum type, and then call modelBuilder. I hit a problem where I wanted to use Entity Framework to save the text value of an enum to the database rather than its numeric value. Jan 13, 2022 · I am upgrading my project from Entity Framework Core 3. Nov 23, 2014 · In September 2018 I wrote a new post explaining how to store enums as ints or strings with Entity Framework Core. Property(e => e. Furthering to Martin's answer, Entity Framework Core has a pre-defined converter for enum to string. Entity<User>() . NET type understood by the database provider. There is this popular workaround where a new property for the string version of the enum is added to the class with the Column attribute. After migration using add-migration, it will create an INT(11) column. 0, and facing trouble with using enum as a property type for a bigint column of a table built in PostgreSQL. It is a nicer solution than the one presented here. Storage. EntityFrameworkCore. microsoft. Enum can be created for the following data types: Int16 ; Int32; Int64; Byte; SByte; Enum can be used in the following ways: Convert an existing property of an entity to enum type from EDM designer. In the Add Enum dialog box type DepartmentNames for the Enum Type Name, change the Underlying Type to Int32, and then add the following members to the type: English, Math, and Economics. In the database it will be entered as an enum, which is in essence a string with a list of allowed values. There are several reasons for this Dec 11, 2019 · EF Core 2. On retrieval the value is parsed to your enum type. 1 to Entity Framework Core 6. Map string column in Entity Framework to Enum (EF 6 Oct 4, 2023 · 值转换器可在从数据库读取或向其中写入属性值时转换属性值。 此转换可以是从同一类型的一个值转换为另一个值（例如加密字符串），也可以是从一种类型的值转换为另一种类型的值（例如数据库中枚举值和字符串的相互转换）。. ValueConversion; using System; namespace MyApp { public class DatabaseContext : DbContext { public DbSet<UserContext> Users { get; set; } protected override void OnConfiguring(DbContextOptionsBuilder Aug 4, 2016 · I’ve written about Enum Alternatives in C#, and a common problem developers encounter when they try to use such an approach is persistence. In the get accessor, return the ToString() method of the enum property. Think about if it was int you were trying to compare against, rather than an enum. Jan 28, 2013 · Here, for example though, you're asking it to compare a string to an enum. For example, to save enums as strings in the database, the model type is the type of the enum, and the provider type is String. There are several reasons for this Mar 23, 2015 · We add a setter because Entity Framework is only going to bring back the string display name and we need to map to the underlying value field to get the proper enum. So the value of the enum will be converted to string when saved in the database. Type) . These two types can be the same. When enums are saved to a SQL database with Entity Framework Core, by default they are stored using their underlying integer values rather than as strings. Press OK. You can use this to convert all the Enum of all the properties of all the entities into a string and vice versa : using Microsoft. Oct 1, 2016 · I am using Entity Framework with Mysql. Oct 14, 2020 · Add an Enum Type. You can't compare the number 1 and a string. Use an existing enum type from a different namespace. Nov 2, 2023 · C# enumeration types (enums) provide a highly extensible and type-safe way of storing values and they are used frequently in . Jul 5, 2023 · The model type is the . protected override void OnModelCreating(ModelBuilder modelBuilder) { modelBuilder . Save the model and build the project Nov 2, 2023 · C# enumeration types (enums) provide a highly extensible and type-safe way of storing values and they are used frequently in . HasConversion<string>(); as a chain of invocations of MethodInfo. public string DisplayName { get { return this. displayName; } // Entity Framework will only retrieve and set the display name. The provider type is the . EntityFrameworkCore; using Microsoft. By default, ORM tools like Entity Framework don’t know what to do with these custom types. NET software development. com Jan 17, 2016 · However, Entity Framework 6 does not support this. Entity<MyEntity>(). Enum is supported in Entity Framework 6 onwards. MyEnum). . NET type of the property in the entity type. Convert an Existing Property to Enum Jan 1, 2016 · This way you can use it with the modelbuilder in a clean way which is readable for others. Mar 23, 2015 · We add a setter because Entity Framework is only going to bring back the string display name and we need to map to the underlying value field to get the proper enum. Although C# COULD call tostring(), its not correct for it to do so. Nov 21, 2018 · Line 33 configures the enum property Name to be stores as a <string>, afterwards, on line 37, we specify that Name is to be used as a Primary Key for the SubscriptionLevel entity. I'm connecting to an existing database and would like one of the columns to be converted to an Enum, so EnumToStringConverter<> seems to be right up my alley. cwgv nly icskxg bgn jllvl qglf whldr excsb rsz sscuqd zszq aklotd rgixi clmqro ywdrxmd