EFcore不使用外键方法

重写MigrationsModelDiffer

public class MigrationsModelDifferWithoutForeignKey:MigrationsModelDiffer
{
    public MigrationsModelDifferWithoutForeignKey(IRelationalTypeMappingSource typeMappingSource, IMigrationsAnnotationProvider migrationsAnnotationProvider, IRowIdentityMapFactory rowIdentityMapFactory, CommandBatchPreparerDependencies commandBatchPreparerDependencies) : base(typeMappingSource, migrationsAnnotationProvider, rowIdentityMapFactory, commandBatchPreparerDependencies)
    {
    }

    public override IReadOnlyList<MigrationOperation> GetDifferences(IRelationalModel? source, IRelationalModel? target)
    {
        var operations = base.GetDifferences(source, target)
            .Where(op => !(op is AddForeignKeyOperation))
            .Where(op => !(op is DropForeignKeyOperation))
            .ToList();
 
        foreach (var operation in operations.OfType<CreateTableOperation>())
            operation.ForeignKeys?.Clear();
 
        return operations;
    }
}

在program.cs里配置

builder.Services.AddDbContext<Mycontext>(option =>
{
    option.UseMySql(builder.Configuration.GetConnectionString("BackDatabaseConnection"),
        new MySqlServerVersion(new Version(8, 0, 33)));

    option.ReplaceService<IMigrationsModelDiffer, MigrationsModelDifferWithoutForeignKey>();
});

 迁移文件类的AddMigration和DropMigration全都不见了nice