entityMap|0|type|LINK|mutability|MUTABLE|data|url|https://gist.github.com/pwrigshi/ff5ccd5a4437d054b6712ec24d089d84|1|IMAGE|IMMUTABLE|imageUrl|https://ask.qcloudimg.com/http-save/yehe-900000/ac3e1f231d62eb5606ab8ffad8714e06.png|imageAlt|blocks|key|ee00t|text|对于MySQL，我使用了@YegorAndrosov在这里制作的gist项目https://gist.github.com/pwrigshi/ff5ccd5a4437d054b6712ec24d089d84，而对于MySQL，我只添加了两个来自NuGet的包(我尝试了Microsoft.EntityFrameworkCore包，但它的DbContextOptionsBuilder中没有UseMySQL，而且我不是EF方面的专家来解决这个缺失的部分)|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|e12pj|下面是两个可用的包|76t2i|MySql.Data.EntityFrameworkCore+(它来自甲骨文!)|40tft|Microsoft.EntityFrameworkCore.Design|3o4ak|正如我上面提到的，包(Microsoft.EntityFrameworkCore)似乎没有办法使用MySQL，现在我从链接中的代码所做的唯一更改是指向MySQL，而不是DbContext中的SqlServer，当然，ConnectionString本身也与我机器中的MySQL服务器相匹配。)|9l15b|++++protected+override+void+OnConfiguring(DbContextOptionsBuilder+optionsBuilder)
++++{
++++++++optionsBuilder.UseMySQL("Server=localhost;Port=3306;Database=test;Uid=mysql;Pwd=MyPass;");
++++++++
++++++++base.OnConfiguring(optionsBuilder);
++++}|code-block|syntax|javascript|f7028|然后在包管理器控制台上，我做到了。|q77g|++++PM>+dotnet+ef+migrations+add+Init+--project+ConsoleApp1+--verbose|4qh|在创建迁移之后，我做到了|7a5sg|++++PM>+dotnet+ef+database+update+--project+ConsoleApp1+--verbose|3j5cc|它工作得很好，创建了迁移，然后在MySQL服务器上成功创建了数据库。|7v1c2|​|2lt58|?|atomic|djgdb|eltbq^0|12|1T|0|0|0|0|0|0|0|0|0|0|0|0|0|0|1|1|0|0^^$0|$1|$2|3|4|5|6|$7|8]]|9|$2|A|4|B|6|$C|D|E|-4]]]|F|@$G|H|I|J|2|K|L|1K|M|@]|N|@$O|1L|P|1M|G|1N]]|6|$]]|$G|Q|I|R|2|K|L|1O|M|@]|N|@]|6|$]]|$G|S|I|T|2|K|L|1P|M|@]|N|@]|6|$]]|$G|U|I|V|2|K|L|1Q|M|@]|N|@]|6|$]]|$G|W|I|X|2|K|L|1R|M|@]|N|@]|6|$]]|$G|Y|I|Z|2|10|L|1S|M|@]|N|@]|6|$11|12]]|$G|13|I|14|2|K|L|1T|M|@]|N|@]|6|$]]|$G|15|I|16|2|10|L|1U|M|@]|N|@]|6|$11|12]]|$G|17|I|18|2|K|L|1V|M|@]|N|@]|6|$]]|$G|19|I|1A|2|10|L|1W|M|@]|N|@]|6|$11|12]]|$G|1B|I|1C|2|K|L|1X|M|@]|N|@]|6|$]]|$G|1D|I|1E|2|K|L|1Y|M|@]|N|@]|6|$]]|$G|1F|I|1G|2|1H|L|1Z|M|@]|N|@$O|20|P|21|G|22]]|6|$]]|$G|1I|I|1E|2|K|L|23|M|@]|N|@]|6|$]]|$G|1J|I|-4|2|K|L|24|M|@]|N|@]|6|$]]]]

Ok for this to work with MySQL
I used the gist project that @YegorAndrosov made here
<a href="https://gist.github.com/pwrigshi/ff5ccd5a4437d054b6712ec24d089d84" rel="nofollow noreferrer">https://gist.github.com/pwrigshi/ff5ccd5a4437d054b6712ec24d089d84</a>
and for MySQL i Added only 2 Packages from NuGet
(i tried Microsoft.EntityFrameworkCore package but it doesn't have UseMySQL in it's DbContextOptionsBuilder and i'm no expert in EF to solve this missing part)
here are the 2 packages that work
MySql.Data.EntityFrameworkCore (it's from Oracle !)
Microsoft.EntityFrameworkCore.Design
as i mentioned above the package (Microsoft.EntityFrameworkCore) doesn't seems to have a way to use MySQL,
now the only change i made from that code in the link is pointing to MySQL instead of SqlServer in DbContext, and the ConnectionString itself ofcourse to match the MySQL server in my machine)
<pre><code> protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
 {
 optionsBuilder.UseMySQL(&quot;Server=localhost;Port=3306;Database=test;Uid=mysql;Pwd=MyPass;&quot;);
 
 base.OnConfiguring(optionsBuilder);
 }
</code></pre>
then on package manager console i did
<pre><code> PM&gt; dotnet ef migrations add Init --project ConsoleApp1 --verbose
</code></pre>
and after migration created i did
<pre><code> PM&gt; dotnet ef database update --project ConsoleApp1 --verbose
</code></pre>
it worked just fine, migration was created, then database created on MySQL server successfully.
<a href="https://i.stack.imgur.com/jcWGW.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/jcWGW.png" alt="screenshot of the Table created in MySQL" /></a>

entityMap|blocks|key|alj3k|text|使用实体框架核心6.0预览版6，您可以进行预先约定的模型配置。也就是说，您可以配置，例如，将所有字符串存储为字节数组：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|99r0f|protected+override+void+ConfigureConventions(ModelConfigurationBuilder+configurationBuilder)
++{
++++++configurationBuilder.Properties<string>()
++++++++++.HaveConversion<byte[]>()
++++++++++.HaveMaxLength(255);

++++++configurationBuilder.IgnoreAny<INonPersisted>();
++}|code-block|syntax|javascript|4tnvc^0|0|0^^$0|$]|1|@$2|3|4|5|6|7|8|I|9|@]|A|@]|B|$]]|$2|C|4|D|6|E|8|J|9|@]|A|@]|B|$F|G]]|$2|H|4|-4|6|7|8|K|9|@]|A|@]|B|$]]]]

Using Entity Framework Core 6.0 Preview 6 you can have pre-convention model configuration. That is you can configure for example that all strings will be stored as byte arrays:
<pre><code>protected override void ConfigureConventions(ModelConfigurationBuilder configurationBuilder)
 {
 configurationBuilder.Properties&lt;string&gt;()
 .HaveConversion&lt;byte[]&gt;()
 .HaveMaxLength(255);

 configurationBuilder.IgnoreAny&lt;INonPersisted&gt;();
 }
</code></pre>

I'm using ASP.NET Core 3.1 with Entity Framework. I'm trying to store byte arrays into a database. Of course, my MySQL database should support that, but Entity Framework doesn't seem to work.
Consider the following model:
<pre><code>public class User 
{
 [Key]
 public int Id { get; set; }
 public string Username { get; set; }
 public string Email { get; set; }
 public byte[] Salt { get; set; }
 public byte[] Password { get; set; }

 [NotMapped]
 public string PlainPassword { get; set; }
}
</code></pre>
Now, whenever I use the package manager console to do <code>Add-Migration InitialCreate</code>, I get the following output:
<pre><code>PM&gt; Add-Migration InitialCreate
Build started...
Build failed.
</code></pre>
Whenever I change the <code>byte[]</code> to <code>string</code>, it works, but the passwords are no strings. What should I do? Convert them to strings or is there another workaround? And if I should convert them to strings, what is the best way to convert them?

Entity Framework is not storing byte arrays

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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