如何将参数传递给返回多个记录的存储过程

Question

如何将参数传递给使用EF6返回多条记录的存储过程 - 使用带有加密列的SQL Server 2016存储过程的DbContext？

使用EF 6.1.3时，SQL Server 2016 - AlwaysEncrypted（确定性）

有一个few articles是谈论使用ADO .NET 4.6通过使用命令，参数对象做到这一点，但我无法找到一个从我的EF DbContext做到这一点。

Answer 1

//make sure to provide the actual datatype and size on the parameter 
//you can use reflection on the entity to dynamically get/set the property info by a common function. 

var paratmeterNames = new StringBuilder(); 
string paratmeterNamesUpdated = null; 

if (lastName != null) 
{ 
    var lastNameParam = new SqlParameter("@lastName", SqlDbType.VarChar, 60) {Value = lastName}; 
    parameterList.Add(lastNameParam); 
    paratmeterNames.Append("@lastName,"); 
} 

if (firstName != null) 
{ 
    var firstNameParameter = new SqlParameter("@firstName", SqlDbType.VarChar, 30) {Value = firstName}; 
    parameterList.Add(firstNameParameter); 
    paratmeterNames.Append("@firstName,"); 
} 

if (paratmeterNames != null && paratmeterNames.Length > 0) 
{ 
    paratmeterNamesUpdated = paratmeterNames.ToString().TrimEnd(','); 
} 

var result = _context.Database.SqlQuery<T>("exec sp_name " + paratmeterNamesUpdated, parameterList.ToArray()).ToList(); 

//this will make below **calls to SQL DB:** 
//exec sp_describe_parameter_encryption N'exec sp_name @lastName,@firstName',N'@lastName varchar(60),@firstName varchar(30)' 
//exec sp_executesql N'exec sp_name @lastName,@firstName',N'@lastName varchar(60),@firstName varchar(30)',@lastName=0x01A2256C34F97,@firstName=0x018EE4BD11BA7