How to display string with maximum of 200 characters & trim the last few charaters till whitespace

Question

Possible Duplicate:
Truncate string on whole words in .Net C#

I have to display brief description of the news let us say maximum of 200 characters & trim the last few characters till white-space, I am not sure how i can trip this kind on string

Sample text

sample news description of news sample news description of news sample news description of news sample news description of news sample news description of news sample news description of news sample news description of news.

OUTPUT with code below

sample news description of news sample news description of news sample news description of news sample news description of news sample news description of news sample news description of news sample n

    if (sDesc.Length > 200)
    {
        sDesc = sDesc.Substring(0, 200);
       // sDesc = sDesc + "...";
    }

how can i trim last few characters so that it doesn't show part of word. I hope you have understood what i am trying to say.

Desired OUTPUT

sample news description of news sample news description of news sample news description of news sample news description of news sample news description of news sample news description of news sample

There is already a good answer to this question. See http://stackoverflow.com/a/1614090/445650 — Kevin Sjöberg, Oct 09 '12 at 12:56

score 9 · Accepted Answer · edited Oct 09 '12 at 13:01

9

You should find the index of the space right before the 200 index. So search for all occurrences and then pick the index of the one the closest to 200. Then use this index to do a Substring and you should be good to go

string myString = inputString.Substring(0, 200);

int index = myString.LastIndexOf(' ');

string outputString = myString.Substring(0, index);

edited Oct 09 '12 at 13:01

Furqan Safdar

16,260
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93

answered Oct 09 '12 at 12:57

middelpat

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2

the first line will throw an exception is the inputString is shorter than 200 chars – KinSlayerUY Apr 04 '16 at 19:58

score 3 · Answer 2 · answered Oct 09 '12 at 13:04

3

if (sDesc.Length > 200)
{
    var str = sDesc.Substring(0, 200);
    var result = str.Substring(0, str.LastIndexOf(' '));
}

answered Oct 09 '12 at 13:04

Furqan Safdar

16,260
13
59
93

score 1 · Answer 3 · answered Oct 09 '12 at 15:55

This will be quicker as the accepted answer as it does one less stringcopy by not first cutting off at 200, but using the start and count parameters of LastIndexOf

            var lio = inputString.LastIndexOf(' ', 0, 200));
            if (lio==-1) lio = 200;
            var newString = inputString.Remove(lio);

score 0 · Answer 4 · answered Oct 09 '12 at 13:05

0

You can find the space after 200 and take substring till first space after index 200.

int i = 200;
for(i=200; i < sDesc.Length; i++)
{
      if(input[i] == ' ')
         break;
}

string res = sDesc.Substring(0, i);

answered Oct 09 '12 at 13:05

Adil

146,340
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How to display string with maximum of 200 characters & trim the last few charaters till whitespace

4 Answers4