我想读取文本文件到它的第一个空行，然后删除我刚读过的那些行。 [英] I want to read a text file up to the first empty line in it and then delete those lines I have just read.

问题描述

我想读取文本文件，直到其中的第一个空行，然后在文本框中显示它，然后想要删除直到我刚从文本文件中读取的空行的行数。 br />


请帮我解决我的问题。

这是我的代码。使用此代码，我只能一次读取单行文本，然后删除该单行。但我想同时阅读多行文本，直到文本文件中的空行，然后删除这些行。



我是什么尝试过：

I want to read a text file up to the first empty line in it, then show it in a textbox and then want to delete the number of lines up to the empty line that I have just read from the text file.

Please help me to solve my problem.
Here is my code. Using this code I am only able to read the single line of text at a time and then delete that single line. But I want to read the multiple lines of text at the same time up to the empty line in my text file and then delete those lines.

What I have tried:

string line = null;

                try
                {
                    StreamReader sr = new StreamReader(fileNameAndPath);
                    line = sr.ReadLine();
                    Clipboard.SetText(line);
                    textBox1.Text = line;
                    sr.Close();

                    if (line == null || line == "")
                    {
                        //To remove the empty line from the text file
                        var file = new List<string>(File.ReadAllLines(fileNameAndPath));
                        file.RemoveAt(0);
                        File.WriteAllLines(fileNameAndPath, file.ToArray());
                    }
                }
                catch
                {
                    MessageBox.Show("Text file is empty");
                }

推荐答案

Quote：

使用这段代码我只能一次读取单行文本，然后删除那一行。

Using this code I am only able to read the single line of text at a time and then delete that single line.

这很好，因为这正是这段代码的假设要做。

您的代码需要完全重写。



首先，阅读所有文件行到列表：

And it is well because this is exactly what this code is supposed to do.
Your code need a complete rewrite.

First, read all lines of file to a list:

var file = new List<string>(File.ReadAllLines(fileNameAndPath));

然后扫描每一行，直到找到一个空行。

一旦你知道了这个位置，删除你想要的东西删除。

then scan each line until you find an empty one.
once you know the position, delete what you want to remove.

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