我正在使用Entity Framework和MySql。Entity Framework + MySql + Guid錯誤
我在使用Guid屬性在數據庫中插入項目時遇到問題。
我得到的錯誤是:Incorrect string value: '\x9D?Z\xC2\x1C\xB2...' for column 'Id' at row 1
如果我從Guid
屬性ID更改爲string
,它工作正常。
該表的整理設置爲utf8 - default collation
。我已將其更改爲uft8mb4 - default collation
,完全沒有任何效果。
的Id
屬性數據類型是VARCHAR(64)
PK NN UQ
這裏是簡化代碼
public class AppFormAppUnitOfWork : DbContext
{
public DbSet<MenuItem> MenuItems { get; set; }
}
static void MySqlGuid(AppFormAppUnitOfWork unitOfWork)
{
MenuItem menuItem = new MenuItem();
menuItem.Id = Guid.NewGuid();
menuItem.MenuItem_Name = "Hello World";
unitOfWork.MenuItems.Add(menuItem);
using (var trans = new TransactionScope())
{
// throws
// Incorrect string value: '\x9D?Z\xC2\x1C\xB2...' for column 'Id' at row 1
unitOfWork.SaveChanges();
trans.Complete();
}
}
static void MySqlString(AppFormAppUnitOfWork unitOfWork)
{
MenuItem menuItem = new MenuItem();
menuItem.Id = Guid.NewGuid().ToString();
menuItem.MenuItem_Name = "Hello World";
unitOfWork.MenuItems.Add(menuItem);
using (var trans = new TransactionScope())
{
// works ok
unitOfWork.SaveChanges();
trans.Complete();
}
}
這裏是web.config設置
<?xml version="1.0" encoding="utf-8"?>
<configuration>
<configSections>
<!-- For more information on Entity Framework configuration, visit http://go.microsoft.com/fwlink/?LinkID=237468 -->
<section name="entityFramework" type="System.Data.Entity.Internal.ConfigFile.EntityFrameworkSection, EntityFramework, Version=6.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" requirePermission="false" />
</configSections>
<startup>
<supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5" />
</startup>
<connectionStrings>
<add name="AppFormAppUnitOfWork" providerName="MySql.Data.MySqlClient" connectionString="server=localhost;port=3306;database=appformapp;uid=root;password=microsoft;Old Guids=true;Charset=utf8;" />
</connectionStrings>
<system.data>
<DbProviderFactories>
<remove invariant="MySql.Data.MySqlClient" />
<add name="MySQL Data Provider" invariant="MySql.Data.MySqlClient" description=".Net Framework Data Provider for MySQL" type="MySql.Data.MySqlClient.MySqlClientFactory, MySql.Data, Version=6.9.6.0, Culture=neutral, PublicKeyToken=c5687fc88969c44d" />
</DbProviderFactories>
</system.data>
<entityFramework>
<defaultConnectionFactory type="System.Data.Entity.Infrastructure.LocalDbConnectionFactory, EntityFramework">
<parameters>
<parameter value="v11.0" />
</parameters>
</defaultConnectionFactory>
<providers>
<provider invariantName="MySql.Data.MySqlClient" type="MySql.Data.MySqlClient.MySqlProviderServices, MySql.Data.Entity.EF6, Version=6.9.6.0, Culture=neutral, PublicKeyToken=c5687fc88969c44d">
</provider>
</providers>
</entityFramework>
</configuration>
的包(實體框架MySql提供程序)我使用的是:
<packages>
<package id="EntityFramework" version="6.0.0" targetFramework="net45" />
<package id="MySql.Data" version="6.9.6" targetFramework="net45" />
<package id="MySql.Data.Entity" version="6.9.6" targetFramework="net45" />
</packages>
我該如何解決此問題而不將所有Guid屬性更改爲字符串?
'CHARSET'應該是連接字符串的大寫字母 –