asp.net-mvc - .net MVC 搜索查询连接表

Question

我有一个搜索功能，可以查找客户姓名、邮政编码、电话号码。我还想要查找连接表 CustomerContact 以搜索名字和姓氏的功能。

我有以下内容：

var customer = from c in db.Customer.Include(c => c.CustomerContact)
                select c;


if (!String.IsNullOrEmpty(searchString))
{
    customer = customer.Where(c => c.CustomerName.ToUpper().Contains(searchString.ToUpper())
                        || c.Postcode.ToUpper().Contains(searchString.ToUpper())
                        || c.CustomerContact.FirstName.ToUpper().Contains(searchString.ToUpper())
                        || c.CustomerContact.Surname.ToUpper().Contains(searchString.ToUpper())
                        || c.Telephone.ToUpper().Contains(searchString.ToUpper()));
}

我没有收到任何错误。当我搜索名字和姓氏时，它只是没有返回任何结果。

Answer 1

客户 = customer.Include("CustomerContact").Where(...

Answer 2

在做其他事情时遇到了这个问题的答案。

这是我的最终代码。希望它对某人有用。

var customer = from c in db.Customer
               select c;

if (!String.IsNullOrEmpty(searchString))
{
    customer = customer.Where(c => SqlFunctions.StringConvert((double)c.CustomerID).Trim().Equals(searchString)
                        || c.CustomerName.ToUpper().Contains(searchString.ToUpper())
                        || c.Postcode.ToUpper().Replace(" ", "").Equals(searchString.ToUpper().Replace(" ", ""))
                        || c.Telephone.ToUpper().Replace(" ", "").Equals(searchString.ToUpper().Replace(" ", ""))
                        || c.CustomerContact.Where(x => x.FirstName.ToUpper().Contains(searchString.ToUpper())).Any()
                        || c.CustomerContact.Where(x => x.Surname.ToUpper().Contains(searchString.ToUpper())).Any()
                        || c.CustomerContact.Where(x => (x.FirstName.ToUpper() + " " + x.Surname.ToUpper()).Contains(searchString.ToUpper())).Any());
        }