C# 更新键值对中键的值

我有一个linq语句，它返回键值对列表。问题是需要替换键中的所有值。有没有一种方法可以在linq的select中进行替换，而不必遍历整个列表

var pagesWithControl = from page in sitefinityPageDictionary
                       from control in cmsManager.GetPage(page.Value).Controls
                       where control.TypeName == controlType
                       select page; // replace "~" with "localhost"

---

不能更改键，但可以使用新键返回新对象：

 var pagesWithControl = from page in sitefinityPageDictionary
                   from control in cmsManager.GetPage(page.Value).Controls
                   where control.TypeName == controlType
                   select new 
                           { 
                             Key = page.Key.Replace("~",localhost"), 
                             page.Value 
                           };

或者如果必须是KeyValuePair：

var pagesWithControl =  
   from page in sitefinityPageDictionary
   from control in cmsManager.GetPage(page.Value).Controls
   where control.TypeName == controlType
   select 
   new KeyValuePair<TKey,TValue>(page.Key.Replace("~",localhost"), page.Value);

---

不能更改键，但可以使用新键返回新对象：

 var pagesWithControl = from page in sitefinityPageDictionary
                   from control in cmsManager.GetPage(page.Value).Controls
                   where control.TypeName == controlType
                   select new 
                           { 
                             Key = page.Key.Replace("~",localhost"), 
                             page.Value 
                           };

或者如果必须是KeyValuePair：

var pagesWithControl =  
   from page in sitefinityPageDictionary
   from control in cmsManager.GetPage(page.Value).Controls
   where control.TypeName == controlType
   select 
   new KeyValuePair<TKey,TValue>(page.Key.Replace("~",localhost"), page.Value);

---

现在假设您在方法签名上使用KeyValuePair和params关键字，并希望更改其中一个传递的KeyValuePair的值。继续：该更改将复制到方法调用方。现在假设您在方法签名上使用KeyValuePair和params关键字，并希望更改传递的KeyValuePair之一的值。继续：该更改将复制到方法调用方。