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问题描述

我有这个代码:



 名称空间 TA_SCOREBOARD_DATA 
{
public class TA_Scoreboard_Classcs
{

SQL_TA_SCOREBOARDEntities1 contxt = new SQL_TA_SCOREBOARDEntities1();

public List< String> EmployeeAccess2()
{

EmployeeAccess EA = new EmployeeAccess();
View_HCM VH = new View_HCM();

var x = 来自 a in EA
join b VH上a.EmpNo等于b。 EmpNo
选择 new
{
a.EmpNo,
b.EmailAddress
};

return x.ToList();
}
}
}





*我收到这些错误:*



- EA(来自EA):



'无法找到实施方案对于查询模式......'



- x。** ToList **();



'方法'System.Linq ... IEnumerable< tsource>'的类型参数无法从用法中推断出来。尝试明确指定类型参数。'



* WHERE:*



- EmployeeAccess是一个表(带* id *和* EmpNo *列,*带有3个数据的EmpNo *)



- View_HCM是一个视图(带* EmailAddress *,* EmpNo *列和1000多个数据)



- b.EmpNo下没有智能感知



- 使用* edmx ,dbml *对象



- 已经使用System.Data命名空间



我如何内连接根据View_HCM EmpNo使用EmailAddress的EmployeeAccess中的3个EmpNo?

解决方案

I have this code:

namespace TA_SCOREBOARD_DATA
       {
           public class TA_Scoreboard_Classcs
           {

            SQL_TA_SCOREBOARDEntities1 contxt = new SQL_TA_SCOREBOARDEntities1();

               public List<String> EmployeeAccess2()
               {

                   EmployeeAccess EA = new EmployeeAccess();
                   View_HCM VH = new View_HCM();

                   var x = from a in EA
                           join b in VH on a.EmpNo equals b.EmpNo
                           select new
                           {
                              a.EmpNo,
                              b.EmailAddress
                           };

                    return x.ToList();
               }
           }
       }



*I'm getting these errors under:*

-- EA (from a in EA):

'Could not find an implementation for the query pattern...'

-- x.**ToList**();

'The type arguments for method 'System.Linq...IEnumerable<tsource>' cannot be inferred from the usage. Try specifying the type arguments explicitly.'

*WHERE:*

-- EmployeeAccess is a table (with *id* and *EmpNo* columns, *EmpNo* with 3 data)

-- View_HCM is a view (with *EmailAddress*, *EmpNo* columns and 1000+ data)

-- No IntelliSense under b.EmpNo

-- using *edmx, dbml* objects

-- already using System.Data namespaces

How do I "inner join" the 3 EmpNo in EmployeeAccess according to View_HCM EmpNo with EmailAddress?

解决方案


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10-12 19:55