entity framework core 调用存储过程和方法

　　目前EF Core调用存储过程，限制很多，比如返回结果必须是定义好的DbSet<>等等。这里用一种曲线救国的方式,自定义两个方法，用原始ado.net解决问题。以MySql数据库为例，代码如下：

 namespace WebApi.Core.Data
 {
     using System.Data;
     using System.Linq;

     using Microsoft.EntityFrameworkCore;

     using MySql.Data.MySqlClient;

     public class TestContext : DbContext
     {
         public TestContext(DbContextOptions<TestContext> options)
             : base(options)
         {
         }

         public int ExcuteProcedure(string parcedureName, params MySqlParameter[] ps)
         {
             using (var cmd = this.Database.GetDbConnection().CreateCommand())
             {
                 cmd.CommandText = parcedureName;
                 cmd.CommandType = CommandType.StoredProcedure;
                 cmd.Parameters.AddRange(ps);
                 this.Database.OpenConnection();
                 var r = cmd.ExecuteNonQuery();
                 this.Database.CloseConnection();
                 return r;
             }
         }

         public object ExcuteFunction(string functionName, params MySqlParameter[] ps)
         {
             using (var cmd = this.Database.GetDbConnection().CreateCommand())
             {
                 // 参数字符串，传参时注意顺序
                 var pString =
                     $"'{ps.Aggregate(string.Empty, (c, n) => $"{c}','{n.Value}").TrimStart(new[] { ',', '\'' })}'";

                 // 可用this.Database.IsXXX()，判读数据库类型，拼command字符串，这里不写了
                 cmd.CommandText = $"select {functionName}({pString});";
                 this.Database.OpenConnection();
                 var r = cmd.ExecuteScalar();
                 this.Database.CloseConnection();
                 return r;
             }
         }

         protected override void OnConfiguring(DbContextOptionsBuilder optionsBuilder)
         {
         }
     }
 }