我有字典，其中包含键和值作为列表 [英] i have dictionary which contain the key and Value as a list

问题描述

hi


i有一个字典，其中包含键作为字符串，值为列表

所以如何获取值od特定键

我想从该值替换certatin字符串作为列表。

解决方案

如果你的意思是你有这个：

字典<字符串，列表<字符串>> myDict = ... 

然后它相对容易：

 List< string> values = myDict [  my key]; 
值[ 2 ] =  新值字符串; 

或

 myDict [  my key] [ 2 ] =  < span class =code-string> new value string; 

试试这个

字典<字符串，列表<字符串>> dict =  new 字典< string，List< string>>（）; 
 dict.Add（  one， new   string  [] {  aaa ，  bb，  nnn，  dd } .ToList（））; 
 dict.Add（  two， new   string  [] {  d ，  bb，  cc，  uuu } .ToList（））; 
 dict.Add（  three， new   string  [] {  affaa ，  bb，  cc，  gggdd } .ToList（））; 
 dict.Add（  four， new   string  [] {  adfdaa ，  xxbb，  ccg，  dd } .ToList（））; 
 
  string  key =  一个; 
 List< string> Value = dict [key]; 
  string  replacefrom =   aaa; 
  string  replaceTo =   apple; 
 Value [Value.IndexOf（replacefrom）] = replaceTo; 

现在字典将使用新项目进行更新，因为它是一个参考输入的

hi
i have a dictionary which contain the key as a string and value as the list
so how to get the value od particular key
and i want to replace certatin string from that value which is as a list.

解决方案

If you mean you have this:

Dictionary<string, List<string>> myDict = ...

then its relatively easy:

List<string> values = myDict["my key"];
values[2] = "new value string";

Or

myDict["my Key"][2] = "new value string";

Try this

Dictionary<string, List<string>> dict = new Dictionary<string, List<string>>();
            dict.Add("one", new string[] { "aaa", "bb", "nnn", "dd" }.ToList());
            dict.Add("two", new string[] { "d", "bb", "cc", "uuu" }.ToList());
            dict.Add("three", new string[] { "affaa", "bb", "cc", "gggdd" }.ToList());
            dict.Add("four", new string[] { "adfdaa", "xxbb", "ccg", "dd" }.ToList());

            string key = "one";
           List<string> Value =  dict[key];
           string replacefrom = "aaa";
           string replaceTo = "apple";
           Value[Value.IndexOf(replacefrom)] = replaceTo;

now the dictionary will be updated with the new item, since it is a reference Type

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