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我想在我的.txt文件中删除 - 行,但是重写不正确。带有文本的行被替换,有时会重复。 如何在重写之前清除打开的.txt文件?如何在写入之前清除.txt?
FileStream fileStream = new FileStream(textBox3.Text,FileMode.OpenOrCreate,
FileAccess.ReadWrite, FileShare.None);
string line = null;
int line_number = 0;
int line_to_delete = 12;
using (StreamReader reader = new StreamReader(fileStream))
{
using (StreamWriter writer = new StreamWriter(fileStream))
{
while ((line = reader.ReadLine()) != null)
{
line_number++;
if (line_number == line_to_delete)
continue;
writer.WriteLine(line);
}
}
}
在我使用下面的代码的一部分,一切正常,但我想读取和写入同一个文件。
using (StreamReader reader = new StreamReader(@"C:\Users\user\Desktop\my.txt"))
using (StreamWriter writer = new StreamWriter(@"C:\Users\user\Desktop\my2.txt"))