Error in using regex (verifying the code for regex)

Question

I have this piece of code

string myText = new TextRange(mainWindow.richtextbox2.Document.ContentStart,  
                      mainWindow.richtextbox2.Document.ContentEnd).Text;

//replace two or more consecutive spaces with a single space, and
//replace  two or more consecutive newlines with a single newline.
var str = Regex.Replace(myText, @"( |\r?\n)\1+", "$1", RegexOptions.Multiline);
mainWindow.Dispatcher.Invoke(new Action(() =>
                     mainWindow.richtextbox2.Document.Blocks.Add(new Paragraph(new 
                      Run("Hello")))));

This is already working but the spacing still remains in between text sent. how can I fix it or update my richtextbox? I am trying to eliminate the spacing in displaying a text to a richtextbox as shown

enter image description here

I want to show :

Hello
Hello
Hello

without the multiple newline or spacing.

Mihai Hantea · Accepted Answer · 2014-02-28T09:18:17.663

2

Document is not of type string.

EDIT

string myText = new TextRange(richtextbox2.Document.ContentStart, richtextbox2.Document.ContentEnd).Text;

//replace two or more consecutive spaces with a single space, and
//replace  two or more consecutive newlines with a single newline.
var str = Regex.Replace(myText, @"( |\r?\n)\1+", "$1", RegexOptions.Multiline);

edited Feb 28 '14 at 09:18

answered Feb 28 '14 at 08:52

Mihai Hantea

1,741
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16

so what object should I use? I know that .Text is not available in wpf c# – iaskyou Feb 28 '14 at 08:53
2

To get the Text in WPF see here: http://stackoverflow.com/questions/957441/richtextbox-wpf-does-not-have-string-property-text – Marco Feb 28 '14 at 08:54
yeah it is working but it did not remove the spacing in the richtextbox. hehe. How could I remove i? – iaskyou Feb 28 '14 at 09:00
1

You need to update the richtextbox with the new value. – Mihai Hantea Feb 28 '14 at 09:00
you want to show like this "hellohellohello" or the space before hello? – Mihai Hantea Feb 28 '14 at 09:12
mainWindow.Dispatcher.Invoke(new Action(() => mainWindow.richtextbox2.Document.Blocks.Add(new Paragraph(new Run("Hello"))))); where should I put this? before or after? – iaskyou Feb 28 '14 at 09:28
I updated my code in the question. Please check if that is right. Thanks – iaskyou Feb 28 '14 at 09:30
You should put another question for this and what are you trying to do. – Mihai Hantea Feb 28 '14 at 09:36
Hello is being displayed in every click and I have clicked 3 times. Not synchronously. – iaskyou Feb 28 '14 at 09:36
ah okay2. thanks by the way. I'll post another question – iaskyou Feb 28 '14 at 09:38

Error in using regex (verifying the code for regex)

1 Answers1