指定的密钥太长；最大密钥长度为 767 字节 mysql , entityframework(migration)

Question

我正在尝试将 MySql 和 EntityFramework 与 Migrations 一起使用，但似乎有问题。

抛出此异常：
指定的密钥太长；最大密钥长度为 767 字节

请帮帮我:(

我的新课：

public class user
{
    public user()
    {
    }

    [Key]
    [Column("id")]
    public int Id { get; set; }

    [StringLength(20)]
    [Column("name")]
    public string Name { get; set; }

    [Column("age")]
    public int Age { get; set; }

}





public class PmtDbContext : DbContext
{
    static PmtDbContext()
    {
       Database.SetInitializer(new MigrateDatabaseToLatestVersion<PmtDbContext, Migrations.Configuration>());

    }}





internal sealed class Configuration : DbMigrationsConfiguration<PmtDbContext>
{
    public Configuration()
    {
        AutomaticMigrationsEnabled = true;
        AutomaticMigrationDataLossAllowed = true;
        SetSqlGenerator("MySql.Data.MySqlClient", new MySqlMigrationSqlGenerator());

    }}

Answer 1

试试这个：

[DbConfigurationType(typeof(MySql.Data.Entity.MySqlEFConfiguration))]
public class PmtDbContext : DbContext
{
    static PmtDbContext()
    {
        Database.SetInitializer(
            new MigrateDatabaseToLatestVersion<PmtDbContext, Migrations.Configuration>());
    }
}