属性 'Country.IdCountry' 的类型 'Guid' 当前数据库提供程序不支持

Question

我正在尝试将 EF Core 与 Azure CosmosDB 结合使用。我正在使用以下配置：

实体：

public class Country
{
    public Guid IdCountry { get; set; }
    public string Name { get; set; }
    public string Code { get; set; }
    public string PhoneCode { get; set; }
    public IdNameReference Currency { get; set; }
}

public class IdNameReference
{
    public Guid Id { get; set; }
    public string Name { get; set; }
}

实体配置class:

public class CountryEntityConfiguration : IEntityTypeConfiguration<Country>
{
    public void Configure(EntityTypeBuilder<Country> builder)
    {
        builder.ToContainer("Country");
        builder.HasKey(e => e.IdCountry);
        builder.HasPartitionKey(e => e.IdCountry);
        builder.HasNoDiscriminator();
        builder.Property(e => e.IdCountry).HasConversion<GuidToStringConverter>().ValueGeneratedOnAdd().HasValueGenerator<GuidValueGenerator>();
        builder.HasOne(e => e.Currency).WithMany().Metadata.DependentToPrincipal.SetPropertyAccessMode(PropertyAccessMode.Field);
    }
}

DbContext OnModelCreating：

protected override void OnModelCreating(ModelBuilder builder)
{
    base.OnModelCreating(builder);
    builder.ApplyConfiguration(new CurrencyEntityConfiguration());
}

以及 IServiceCollection 配置：

services.AddDbContext<MyDbContext>(options => options.UseCosmos(
    Environment.GetEnvironmentVariable("Db_ServiceEndpoint"),
    Environment.GetEnvironmentVariable("Db_AccountKey"),
    Environment.GetEnvironmentVariable("Db_DatabaseName")
    )
);

但我仍然收到以下错误：

The property 'Country.IdCountry' is of type 'Guid' which is not supported by the current database provider. Either change the property CLR type, or ignore the property using the '[NotMapped]' attribute or by using 'EntityTypeBuilder.Ignore' in 'OnModelCreating'

编辑：我忘了具体说明。当我尝试将新项目添加到上下文集合时会发生这种情况

我是 CosmosDB 的新手，也是以这种方式配置 EF 的新手。

您知道问题出在哪里吗？

Answer 1

好的，我想通了，我用错了ValueConverter。我用了

.HasConversion<GuidToStringConversion>()

但我不得不使用

.HasConversion<string>()

或

.HasConversion(g => g.ToString("D"), s => new Guid(s))

我希望有人会:)

属性 'Country.IdCountry' 的类型 'Guid' 当前数据库提供程序不支持

The property 'Country.IdCountry' is of type 'Guid' which is not supported by the current database provider

azure

entity-framework-core

.net-core

azure-cosmosdb