c# - 在 Entity Framework 中调用AsNoTracking的位置是否重要

编写 Entity Framework 查询时在何处调用AsNoTracking方法有关系吗？例如

var matchingCustomers = context.Customers.AsNoTracking().Where(n => n.city == "Milan").Skip(50).Take(100).OrderBy(n => n.Name).ToList();
var matchingCustomers = context.Customers.Where(n => n.city == "Milan").AsNoTracking().Skip(50).Take(100).OrderBy(n => n.Name).ToList();
var matchingCustomers = context.Customers.Where(n => n.city == "Milan").Skip(50).AsNoTracking().Take(100).OrderBy(n => n.Name).ToList();
var matchingCustomers = context.Customers.Where(n => n.city == "Milan").Skip(50).Take(100).AsNoTracking().OrderBy(n => n.Name).ToList();
var matchingCustomers = context.Customers.Where(n => n.city == "Milan").Skip(50).Take(100).OrderBy(n => n.Name).AsNoTracking().ToList();
var matchingCustomers = context.Customers.Where(n => n.city == "Milan").Skip(50).Take(100).OrderBy(n => n.Name).ToList().AsNoTracking();

我喜欢将其添加到语句的末尾，但在ToList这样调用之前:

var matchingCustomers = context.Customers.Where(n => n.city == "Milan").Skip(50).Take(100).OrderBy(n => n.Name).AsNoTracking().ToList();

最佳答案

不，没关系:(source)



因此，您要么在开始时执行它，然后使用方法链扩展"new"查询，要么在最后完成它，然后获得"new"查询。只要在执行查询之前将其称为，就可以了。