在某个文本后从listbox1中提取文本？ [英] Extract text from listbox1 after a certain text ?

问题描述

Hello everyone,
This below is a code that extracts everything from listBox1 after "sometext" in textBox1.text, and it works well.

private void extract()
        {
            string s = string.Join(Environment.NewLine, listBox1.SelectedItems.OfType<object>().Select(i => Regex.Match(i.ToString(), @"sametext?(.*?)(?=#|$)").Groups[1].Value));
            textBox1.Text = (s.ToString());
        }

"sometext" is not always the same.


I would like to replace "sametext" with textBox2.text

textBox2.Text = different text

I tried:

我尝试过：

What I have tried:

private void extract()
        {
            string s = string.Join(Environment.NewLine, listBox1.SelectedItems.OfType<object>().Select(i => Regex.Match(i.ToString(), "@"+ textBox2.Text + "?(.*?)(?=#|$)").Groups[1].Value));
            textBox1.Text = (s.ToString());
        }

But it does not work.

Please help me.

Thank you.

推荐答案

））。Groups [1] .Value））;
textBox1.Text =（s.ToString（））;
}

sometext并不总是相同。


我会喜欢用textBox2.text替换sametext

textBox2.Text =不同的文字

我试过：

)").Groups[1].Value)); textBox1.Text = (s.ToString()); } "sometext" is not always the same. I would like to replace "sametext" with textBox2.text textBox2.Text = different text I tried:

我尝试过：

What I have tried:

private void extract()
        {
            string s = string.Join(Environment.NewLine, listBox1.SelectedItems.OfType<object>().Select(i => Regex.Match(i.ToString(), "@"+ textBox2.Text + "?(.*?)(?=#|

））。组[1] .Value））;
textBox1.Text =（s.ToString （））;
}

但它不起作用。

请帮助我。

谢谢。

)").Groups[1].Value)); textBox1.Text = (s.ToString()); } But it does not work. Please help me. Thank you.

将你的模式放在一个单独的字符串中（在匹配中使用它之前），显示它，并观察为什么它不是什么你期待。



当你没有证据时，你正在做出很多关于哪些TextBox包含什么等的假设。

Put your "pattern" in a separate string (before using it in "Match"), display it, and observe "why" it is not what you expect.

You're making a lot of assumptions about which TextBox contains what, etc. when you have no "proof".

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