C＃更改字典中的值 [英] C# Change value in dictionary

问题描述

大家好， 

Hi everyone, 

我想知道是否有人可以帮我解决一段时间困扰我的问题。

I was wondering if someone could help me with an issue that has been bugging me for a while.

我有一本只有4个项目的字典。其中3个围绕着它们{{}}，并且需要更改这些项目。

I have a dictionary with only 4 items in it. 3 of which have {{}} surrounding them, and these items need to be changed.

我遇到的问题是我不确定如何在一个时间内更改多个值foreach声明。

the issue I have is that I am not sure how to change multiple values at one time in a foreach statement.

我可以更改一个值，但我不确定如何重写一个文件的多个更改。

I can change one value but I am not sure how to re-write multiple changes to a file.

这里是我的代码： -

here is my code:-

public static void Diction1（）

        {

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP;字典<字符串，字符串> diction = new Dictionary< string，string>（）;

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; diction.Add（"{{name}}"，"{{dan}}"）;

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; diction.Add（"{{work}}"，"{{software}}"）;

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; diction.Add（" {{car}}"，" {{honda}}"）;

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; diction.Add（"channel"，"2"）;



  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; string text = string.Join（Environment.NewLine，diction.Select（d => d.Key +"，" + d.Value））;

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; File.WriteAllText（@"C：\EDchannel2 \EDchannelTemplate.txt"，text）; //写入模板文件。



  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; string readalltext = File.ReadAllText（@" C：\ EDchannel2 \EDchannelTemplate.txt"）;



  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; foreach（KeyValuePair< string，string> diction in diction）

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; {

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; string result = readalltext.Replace（" {{dan}}"，" monkey"）;
$


  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; string outputFile = @" C：\ EDchannel2 \EDchannel1.txt";

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; File.WriteAllText（outputFile，result）; //将结果写入文件。

  &NBSP; &NBSP; &NBSP; &NBSP; &NBSP; }¥b $ b  &NBSP; &NBSP; &NBSP; }

public static void Diction1()
        {
            Dictionary<string, string> diction = new Dictionary<string, string>();
            diction.Add("{{name}}", "{{dan}}");
            diction.Add("{{work}}", "{{software}}");
            diction.Add("{{car}}", "{{honda}}");
            diction.Add("channel", "2");

            string text = string.Join(Environment.NewLine, diction.Select(d => d.Key + "," + d.Value));
            File.WriteAllText(@"C:\EDchannel2\EDchannelTemplate.txt", text);// Writes to a template file.

            string readalltext = File.ReadAllText(@"C:\EDchannel2\EDchannelTemplate.txt");

            foreach (KeyValuePair<string, string> pair in diction)
            {
                string result = readalltext.Replace("{{dan}}", "monkey");

                string outputFile = @"C:\EDchannel2\EDchannel1.txt";
                File.WriteAllText(outputFile, result); //Writes results to a file.
            }
        }

如果有人有任何想法，请提供帮助。

If anyone has any ideas, please help.

谢谢。

问候

Dan

推荐答案

您好，

 全部取决于对词典类的更改和输出文件编码。

 All depends on changes to the Dictionary Class and the output file coding.

如果没有任何变化，那么您可以将 ReadAllLines（）方法转换为 String [] 数组。

If nothing changes then you can method ReadAllLines() into String[] array.

然后执行搜索/替换内存，以便您可以将新数据写入

Then do a search/replace in memory so you can write the new data to the

输出文件。 如果您想使用词典类进行搜索/替换，那么

output file.  If you want to search/replace using the Dictionary Class then

继续使用 ForEach 和 KeyValuePair 。在循环内部我们
IF 评估

keep using the ForEach with KeyValuePair . Inside the loop us IF to evaluate

密钥结果 True 然后更改
键的值。请记住，

the Key results to True then change the Value for that Key. Remember, you

无法从词典类添加/删除键，但可以更改
值 s

can not add/remove Keys from Dictionary Class but can change Values while

ForEach 循环执行。

 

 希望这会有所帮助：）

 Hope this helps :)

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