資深工讀生清心記事

[C#] 刪除文字檔中的某一行

4 6 月, 2016 by com88_lcs74

本文的sample code來自 http://stackoverflow.com/questions/1245243/delete-specific-line-from-a-text-file

如果你要刪除特定內容的某一行,sample code如下

string line = null;
string line_to_delete = "the line i want to delete";
using (StreamReader reader = new StreamReader("C:\\input")) {
using (StreamWriter writer = new StreamWriter("C:\\output")) {
while ((line = reader.ReadLine()) != null) {
if (String.Compare(line, line_to_delete) == 0)
continue;
writer.WriteLine(line);
}
}
}

如果你是要刪除某特定行數的內容,sample code如下

string line = null;
int line_number = 0;
int line_to_delete = 12;
using (StreamReader reader = new StreamReader("C:\\input")) {
using (StreamWriter writer = new StreamWriter("C:\\output")) {
while ((line = reader.ReadLine()) != null) {
line_number++;
if (line_number == line_to_delete)
continue;
writer.WriteLine(line);
}
}
}