Question

我有一个linq语句，它返回<string,string>个键值对的列表。问题是需要替换密钥中的所有值。有没有办法在选择linq时进行替换而不必迭代整个列表？

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

Answer 1

您无法更改密钥，但可以使用新密钥返回新对象：

 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);

更新密钥值对中Key的值

1 个答案: