Ask: Replace multiple new line into single new line or br

Question

4.00/5 (5 votes)

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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

Posted 14-Jun-11 17:43pm

Ade.Ruyani.Z

Updated 14-Jun-11 18:02pm

Prerak Patel

v3

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Comments

Sergey Alexandrovich Kryukov 14-Jun-11 23:53pm

Remove ASP.NET tag, it is irrelevant.
--SA

Sergey Alexandrovich Kryukov 14-Jun-11 23:55pm

How can this be a problem? What did you try?
--SA

Ade Ruyani 15-Jun-11 0:48am

i'l try this code from Prerak Patel :
litText.Text = System.Text.RegularExpressions.Regex.Replace(Text1.Text, "[\\r\\n]+", "<br /><br />", System.Text.RegularExpressions.RegexOptions.Multiline);

this works if i press a lot of button enter,but this isn't works if i press button enter once then displays new line twice. i want if i press once or two button enter, fixed display once or two new line. except three times or more than two.

2 solutions

Solution 2

Take help of Regex. Below code worked for me:

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

Hope this works for you as well.

Posted 14-Jun-11 18:42pm

RakeshMeena

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Prerak Patel · Accepted Answer · 2011-06-14T18:00:00

Solution 1

Using array

C#

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

or regular expression

C#

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

or loop at last

C#

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

Posted 14-Jun-11 18:00pm

Prerak Patel

Updated 14-Jun-11 18:02pm

v2

Comments

Ade Ruyani 15-Jun-11 1:02am

i'l try your code :

litText.Text = System.Text.RegularExpressions.Regex.Replace(Text1.Text, "[\\r\\n]+", "<br /><br />", System.Text.RegularExpressions.RegexOptions.Multiline); this works if i press a lot of button enter,but this isn't works if i press button enter once then displays new line twice. i want if i press once or two button enter, fixed display once or two new line. except three times or more than two.

please your assistance and solutions.

Thansk before.