指定的密鑰太長;最大密鑰長度是767字節mysql，entityframework（遷移）

Question

我試圖使用MySql和EntityFramework遷移，但似乎是錯誤的東西。

拋出此異常：
指定的鍵過長;最大密鑰長度爲767個字節

請幫我:(

我的新類：

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

試試這個：

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