在文本文件中的特定位置添加新行. [英] Add a new line at a specific position in a text file.

问题描述

我正在尝试在文件中添加特定的文本行.特别是在两个边界之间.

I am trying to add a specific line of text in a file. Specifically between two boundaries.

如果我想在 item1 的边界之间添加一条线会是什么样子的示例:

An example of what it would look like if I wanted to add a line in between the boundaries of item1:

[item1]
2550 coins 995 200000 7
2550 coins 995 200000 7
2550 coins 995 200000 7
2550 coins 995 200000 7
2550 coins 995 200000 7
//Add a line here in between the specific boundaries
[/item1]
[item2]
2550 coins 995 200000 7
2550 coins 995 200000 7
2550 coins 995 200000 8
2550 coins 995 200000 7
2550 coins 995 200000 7
[/item2]
[item3]
2550 coins 995 200000 7
2550 coins 995 200000 7
2550 coins 995 200000 7
2550 coins 995 200000 7
2550 coins 995 200000 7
[/item3]

这是我迄今为止尝试过的，但它远非正确.它一直说该文件正在被读者使用，因此作者无法对其进行编辑，当我让它工作时，它清除了整个文档.

This is what I have tried so far, however Its nowhere near correct. It keeps saying that the file is being used by the reader so it cant be edited by the writer, when I did get it to work it cleared the entire document.

public void createEntry(String npcName)
{
    String line;
    String fileName = "Drops.de";
    StreamWriter streamWriter = new StreamWriter(fileName);
    StreamReader streamReader = new StreamReader(fileName);
    line = streamReader.ReadLine();
    if (line == ("[" + npcName + "]"))
    {
        streamReader.ReadLine();
        streamWriter.WriteLine("Test");
    }
}

我也想知道如何在文档末尾写行.

I would also like to know how to write lines at the end of the document.

推荐答案

这将添加您想要的行.(确保你有 using System.IO; 和 using System.Linq; 添加)

This will add the line where you want it. (Make sure you have using System.IO; and using System.Linq; added)

public void CreateEntry(string npcName) //npcName = "item1"
{
    var fileName = "test.txt";
    var endTag = String.Format("[/{0}]", npcName);
    var lineToAdd = "//Add a line here in between the specific boundaries";

    var txtLines = File.ReadAllLines(fileName).ToList();   //Fill a list with the lines from the txt file.
    txtLines.Insert(txtLines.IndexOf(endTag), lineToAdd);  //Insert the line you want to add last under the tag 'item1'.
    File.WriteAllLines(fileName, txtLines);                //Add the lines including the new one.
}

这篇关于在文本文件中的特定位置添加新行.的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！