问题描述
我在文件夹中有多个文本文件.我需要删除文本文件中每行的第 8 个字符处的字符.文本文件有 100+ 多行
I have multiple text files in folder. I need to delete character at the 8th character of each line in the text files. Text files have 100+ multiple rows
我将如何执行此操作?
原始文件示例:
123456789012345....
abcdefghijklmno....
新文件:
12345679012345
abcdefgijklmno
阅读这篇文章很有帮助:
Reading this article is helpful:
注意:文本行的长度可以是可变的(不确定是否重要 - 一行可以有 20 个字符,下一行可能有 30 个字符,等等.所有文本文件都在文件夹中:C:TestFolder
Note: Length of text lines can be variable (not sure if it matters- one row can have 20 characters, next line may have 30 characters, etc.All text files are in folder: C:TestFolder
推荐答案
您可以使用 File.ReadAllLines()
和 string.Substring()
方法如下:
You can use File.ReadAllLines()
and string.Substring()
methods as follwing:
string path = @"C:TestFolder";
string charToInsert = " ";
string[] allFiles = Directory.GetFiles(path, "*.txt", SearchOption.TopDirectoryOnly); //Directory.EnumerateFiles
foreach (string file in allFiles)
{
var sb = new StringBuilder();
string[] lines = File.ReadAllLines(file); //input file
foreach (string line in lines)
{
sb.AppendLine(line.Length > 8 ? line.Substring(0, 7) + line.Substring(8) : line);
}
File.WriteAllText(file, sb.ToString()); //overwrite modified content
}
line.Substring(0, 7)
表示前 7 个字符(字符 #0 到 #6,长度为 7).line.Substring(8)
表示从第 9 个字符到结尾(char #8 到结尾).line.Substring(0, 7)
means first 7 characters (char #0 to #6 with length of 7).line.Substring(8)
means from 9'th character to end (char #8 to end).
请注意,字符位置是零索引的!
Note that char positions are zero-indexed!
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