Question

我想通过下面的LINQ查询向ViewBag返回一个值

var myCompanyName = (from c in db.Companies
                     where c.CompanyId == CompanyID
                     select c.CompanyName).ToString();
ViewBag.myCompanyName = myCompanyName;

在我的MVC控制器中，但我在视图中得到以下输出。

SELECT [Extent1].[CompanyName] AS [CompanyName] FROM [dbo].[Companies] AS [Extent1] WHERE [Extent1].[CompanyId] = @p__linq__0 Company Name from Controller Action

View Bag预期的结果应该是：CompanyName XYZ。请问我该如何做到这一点？

Answer 1

您没有实现查询，我怀疑您想要返回单个值（而非IEnumerable<string>），因此您需要将.ToString()替换为.FirstOrDefault()

var myCompanyName = (from c in db.Companies
                     where c.CompanyId == CompanyID
                     select c.CompanyName).FirstOrDefault();
ViewBag.myCompanyName = myCompanyName;

或者如果您确实想要一个string的集合，那么它将是.ToList()

如何将值从MVC控制器中的select语句发送到Viewbag

1 个答案: