MySQL Connector/NET Developer Guide
MySQL Connector/NET integrates support for Entity Framework Core (EF Core). The requirements and configuration of EF Core depend on the version of Connector/NET installed and the features that you require. Use the table that follows to evaluate the minimum requirements.
Table 7.2 Connector/NET Versions and Entity Framework Core Support
Connector/NET | EF Core 2.1 | EF Core 3.1.1 | EF Core 5.0 |
---|---|---|---|
8.0.23 | Not supported | .NET Standard 2.0 | .NET Standard 2.1 (feature set is equivalent to EF Core 3.1.1) |
8.0.20 to 8.0.22 | Not supported | .NET Standard 2.0 | Not supported |
8.0.18 to 8.0.19 | .NET Standard 2.0 or .NET Framework 4.6.1 (and later) | Not supported | Not supported |
8.0.13 to 8.0.17 | .NET Standard 2.0 or .NET Framework 4.6.1 (and later) | Not supported | Not supported |
8.0.11 to 8.0.12 | Not supported | Not supported | Not supported |
In this section:
Connector/NET 8.0
MySQL 5.7 or MySQL 8.0 server
Entity Framework Core packages:
MySql.EntityFrameworkCore
5.0.0-m8.0.2x
and
3.1.10-m8.0.2x
(Connector/NET 8.0.23 and
higher on .NET)
MySql.Data.EntityFrameworkCore
8.0.2x
(Connector/NET 8.0.22 and
earlier)
An implementation of .NET Standard) or .NET Framework that is supported by Connector/NET (see Table 7.2, “Connector/NET Versions and Entity Framework Core Support”)
.NET | .NET Core SDK
.NET 5.0 for all supported platforms: https://dotnet.microsoft.com/download/dotnet/5.0
.NET Core for Microsoft Windows: https://www.microsoft.com/net/core#windowscmd
.NET Core for Linux: https://www.microsoft.com/net/core#linuxredhat
.NET Core for macOS: https://www.microsoft.com/net/core#macos
Optional: Microsoft Visual Studio 2015, 2017, 2019, or Code
For EF Core 3.1, Visual Studio 2019 version 16.3 is the minimum.
To use Entity Framework Core with a MySQL database, do the following:
Install the NuGet package.
When you install either the
MySql.EntityFrameworkCore
or
MySql.Data.EntityFrameworkCore
package, all
of the related packages required to run your application are
installed for you. For instructions on adding a NuGet package,
see the relevant
Microsoft
documentation.
In the class that derives from the DbContext
class, override the OnConfiguring
method to
set the MySQL data provider with UseMySQL
.
The following example shows how to set the provider using a
generic connection string in C#.
protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder) { #warning To protect potentially sensitive information in your connection string, you should move it out of source code. See http://go.microsoft.com/fwlink/?LinkId=723263 for guidance on storing connection strings. optionsBuilder.UseMySQL("server=localhost;database=library;user=user
;password=password
"); }
The Connector/NET implementation of EF Core has the following limitations:
Memory-Optimized Tables is not supported.
The following table shows the maximum length of string types supported by the Connector/NET implementation of EF Core. Length values are in bytes for nonbinary and binary string types, depending on the character set used.
Table 7.3 Maximum Length of strings used with Entity Framework Core
Data Type | Maximum Length | .NET Type |
---|---|---|
CHAR |
255 | string |
BINARY |
255 | byte[] |
VARCHAR , VARBINARY |
65,535 | string , byte[] |
TINYBLOB , TINYTEXT |
255 | byte[] |
BLOB , TEXT |
65,535 | byte[] |
MEDIUMBLOB , MEDIUMTEXT |
16,777,215 | byte[] |
LONGBLOB , LONGTEXT |
4,294,967,295 | byte[] |
ENUM |
65,535 | string |
SET |
65,535 | string |
For additional information about the storage requirements of the string types, see String Type Storage Requirements.