Question

我有一种方法可以编辑文本文件中的单词并在命令提示符下显示。现在我试图创建一个方法来编辑文本文件中的单词并将其写入新文件。我还想提一下，我不能使用File或Regex类，因为我不允许将它用于我的作业。这是我的StreamReader代码：

public void EditorialControl(string fileName, string word, string replacement)
{            
    List<string> list = new List<string>();
    using (StreamReader reader = new StreamReader(directory + fileName))
    {
        string line;
        while ((line = reader.ReadLine()) != null)
        {                    
            line = line.Replace(word, replacement);
            list.Add(line);
            Console.WriteLine(line);
        }
        reader.Close();
    }      
}

这是我目前为止StreamWriter的代码：

public void EditorialResponse(string fileName, string word, string replacement, string saveFileName)
{
    using (StreamWriter writer = new StreamWriter(directory + saveFileName, true))
    {
        {
            string input = directory + fileName;
            string line = input.Replace(word, replacement);
            writer.Write(line);                     
        }
        writer.Close();
    }
}

我可以添加什么来使StreamWriter打开文件，编辑单词并将其写入新文件，或者可能使用StreamReader方法在StreamWriter中进行这些更改？谢谢

Answer 1

下面...

public void EditorialResponse(string fileName, string word, string replacement, string saveFileName)
{
    StreamReader reader = new StreamReader(directory + fileName);
    string input = reader.ReadToEnd();

    using (StreamWriter writer = new StreamWriter(directory + saveFileName, true))
    {
        {
            string output = input.Replace(word, replacement);
            writer.Write(output);                     
        }
        writer.Close();
    }
}

Answer 2

public IList<string> GetEditedContent(string fileName, string word, string replacement)
{            
    List<string> list = new List<string>();
    using (StreamReader reader = new StreamReader(directory + fileName))
    {
        string line;
        while ((line = reader.ReadLine()) != null)
        {                    
            line = line.Replace(word, replacement);
            list.Add(line);
            Console.WriteLine(line);
        }
        reader.Close();
    }      
    return list;
}

    // Example how write list to a file. 
 using (System.IO.StreamWriter file = new System.IO.StreamWriter(@"C:\Users\Public\TestFolder\WriteLines2.txt"))
    {
        foreach (string listItem in list)
        {
            file.WriteLine(line);

        }
    }

关于StreamWriter

中C# Programming Guide的示例

How to: Write to a Text File (C# Programming Guide)

Answer 3

你可以拥有这个简单的代码，它应该编辑你的“filename.txt”并添加新文本。

using (System.IO.StreamWriter file = new System.IO.StreamWriter(@"C:\TestFolder\filename.txt", true))
{
file.WriteLine("text to edit / append ...");
}

如何使用StreamWriter在c＃中编辑文本文件？

3 个答案: