EF Core-表格列自动排序

Question

I have just added a few new models to my .NET Core application that is currently using EF code-first migrations. Previous models have migrated fine and in the order of my model properties, but things seem to have changed now. New models are sorted first by key values, then alphabetically.

Here's an example...

My logging class:

[Table("Logs")]
public class LogEntry
{
    [Key, DatabaseGenerated(DatabaseGeneratedOption.Identity)]
    public string Id { get; set; }

    public LogEntryType Type { get; set; }

    [StringLength(4000)]
    public string Message { get; set; }

    [StringLength(4000)]
    public string StackTrace { get; set; }

    public DateTime LogTimeUtc { get; set; } = DateTime.UtcNow;
}

I type into my package manger console in VS 2017:

add-migration InitialCreate -Context LoggingContext

and that produces this in the migration builder:

migrationBuilder.CreateTable(
            name: "Logs",
            columns: table => new
            {
                Id = table.Column<string>(type: "nvarchar(450)", nullable: false),
                LogTimeUtc = table.Column<DateTime>(type: "datetime2", nullable: false),
                Message = table.Column<string>(type: "nvarchar(4000)", maxLength: 4000, nullable: true),
                StackTrace = table.Column<string>(type: "nvarchar(4000)", maxLength: 4000, nullable: true),
                Type = table.Column<int>(type: "int", nullable: false)
            },
            constraints: table =>
            {
                table.PrimaryKey("PK_Logs", x => x.Id);
            });

Notice that the order of the properties have changed? This same ordering is then applied to the database when using:

update-database -Context LoggingContext

How can I get EF Core to stop ordering my columns? The last time I made a new table for this application (using the exact same method, 2 months back) it retained its order, and I don't think I've done anything to it since.

Answer 1

它发生在2.0，EF核心2.1或更新后，迁移到最初生成的表列在同一顺序为属性的声明中classes.Refer到这里 。