询问:将多个新行替换为单个新行或br [英] Ask: Replace multiple new line into single new line or br

问题描述

你好..

我的替换字符有问题.

如果我有一个文本框，并且我用许多新行将其写入文本框.

结果是我希望将许多新行替换为一两个新行，例如facebook中的注释.

请您的协助和您的意见.

谢谢
Ade

hello..

i have problem with replace character.

if i have one textbox, and i write into textbox with many new line.

and the results I wanted a lot of new lines replaced with one or two new lines such as comments in the facebook.

please your assistance and your opinions.

Thank you
Ade

推荐答案

使用数组

String.Join(System.Environment.NewLine, text.Split(System.Environment.NewLine.ToCharArray(), StringSplitOptions.RemoveEmptyEntries))

或正则表达式

or regular expression

System.Text.RegularExpressions.Regex.Replace(System.text, "[\\r\\n]+", System.Environment.NewLine, System.Text.RegularExpressions.RegexOptions.Multiline)

或最后循环

or loop at last

while (txt.Contains(System.Environment.NewLine + System.Environment.NewLine)) {
	txt = txt.Replace(System.Environment.NewLine + System.Environment.NewLine, System.Environment.NewLine);
}

获得Regex的帮助.下面的代码为我工作:

Take help of Regex. Below code worked for me:

textBox1.Text = Regex.Replace(textBox1.Text, "[\r\n]+", "\r\n");

希望这也对您有用.

Hope this works for you as well.

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