我已经在linq中编写了一个查询,以根据他们的职员编号返回10个不同的员工的信息。虽然我很新,但我有问题返回。我在这段代码中做错了什么?作为自定义数据类型将数据从Linq转换为SQL查询
public class queryClass
{
private string firstName { get; set; }
private string lastName { get; set; }
private int employeeNo { get; set; }
private string department { get; set; }
}
public static queryClass[] GetEmpData(int empID1, int empID2, int empID3, int empID4, int empID5, int empID6, int empID7, int empID8, int empID9, int empID10)
{
using(var context = new EmpInfoDataContext())
{
var query = from e in context.EmployeTable
join j in context.JobTitles on e.JobTitle equals j.JobTitle
where e.EmployeeNo == empID1
where e.EmployeeNo == empID2
where e.EmployeeNo == empID3
where e.EmployeeNo == empID4
where e.EmployeeNo == empID5
where e.EmployeeNo == empID6
where e.EmployeeNo == empID7
where e.EmployeeNo == empID8
where e.EmployeeNo == empID9
where e.EmployeeNo == empID10
select new {e.FirstName, e.LastName, e.EmployeeNo, j.Department};
return query.ToArray();
}
}
在“返回query.Toarray(); “的误差是” 不能转换表达式类型 '{姓:串,姓氏:串,为employeeno:INT,部:串} []返回类型' Employeephotos.Models.HomeModel.queryClass []”
感谢所有帮助你可以给。
感谢,我还在试图找出这一切了。我遇到的错误是,“return query.ToArray()”以红色下划线,并给出错误“无法转换表达式类型”{名字:字符串,姓氏:字符串,EmployeeNo:int,部门:字符串} [ ]返回类型'Employeephotos.Models.HomeModel.queryClass []“我会编辑这个问题,使其更清晰 – 2013-02-12 18:33:16
@Danger_Fox我已经更新了我的答案,向您展示如何在select语句中使用您的queryClass类型。 – 2013-02-12 18:35:52
修复它。谢谢! – 2013-02-12 18:40:42