c# 在文本框中用换行符替换“\n”文本

Question

I have some text (for example "o\nour first place, and this\n\n13") and I want that for each "\n" string founded into the text this must be replaced with newline...

output for the example will be:

o our first place, and this

13 How can I make? textbox is multiline

the code is

string text_str = txtbox.Text;
text_str .Replace("(?<!\r)\n", "\r\n");
txtbox.Clear();
txtbox.Text = text_str;

Answer 1

I think you're looking for something like this:

string text_str = txtbox.Text;
text_str = text_str.Replace("\\n", "\r\n");
txtbox.Clear();
txtbox.Text = text_str;

Although that's a really round about way of doing things. This will accomplish the same thing:

txtbox.Text = txtbox.Text.Replace("\\n", "\r\n");

Answer 2

Here you are:

string text_str = "o\nour first place, and this\n\n13";
text_str = text_str.Replace("\n", "\r\n");

Hope this help.

Answer 3

这应该工作：

txtbox.Text = txtbox.Text.Replace("\\n", Environment.NewLine);

Answer 4

Note very sure what the OP needed, but in case someone else comes here looking for what I was:

blah.Text = Regex.Replace(origString, "(?<!\\r)\\n", "\\r\\n")