Replacing part of sentence

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Suppose i have a sentence

my name is james and i am 19 years old.

how can i replace after "and" part til full stop(.) with full stop(.)

the expected output should be something like that.

my name is james.

thank you in advance

Posted 17-Apr-15 19:50pm

Asad_Iqbal

Updated 17-Apr-15 19:53pm

v2

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OriginalGriff · Accepted Answer · 2015-04-17T20:11:00

Solution 1

Use a Regex:

C#

public static Regex regex = new Regex(
      @"\sand\s.+\.",
    RegexOptions.IgnoreCase
    | RegexOptions.Multiline
    | RegexOptions.CultureInvariant
    | RegexOptions.IgnorePatternWhitespace
    | RegexOptions.Compiled
    );


string result = regex.Replace(inputText,".");

Posted 17-Apr-15 20:11pm

OriginalGriff

Updated 17-Apr-15 20:12pm

v2

Comments

Asad_Iqbal 18-Apr-15 2:31am

suppose instead of "and" i have list of words i.e. "بلکہ ","مگر ","یعنی "," کیونکہ", "لیکن ","گویا ","یعنی", "چنانچہ"
and instead of full stop(.) i have these "۔", "؟" how regular expression will work than??

your code works perfectly for english but i want to replace it with them

OriginalGriff 18-Apr-15 4:10am

So look at how regexes work: you can use groups and alternatives:
(\sand\s|\sthen\s).+\.
Replace "and" and "then" with your list and give it a try.

Get a copy of Expresso
http://www.ultrapico.com/Expresso.htm
It's free; it examines, generates, and tests Regular expressions.

Asad_Iqbal 18-Apr-15 4:32am

Thanksssss alot my 5 for this.. it worked i was stuck there from a very long time :)

OriginalGriff 18-Apr-15 4:45am

You're welcome!

Suvendu Shekhar Giri · Accepted Answer · 2015-04-17T20:17:00

Solution 2

You can use Substring() to do that

C#

string sentence = "my name is james and i am 19 years old.";
string result = sentence.Substring(0, sentence.IndexOf(" and "))+".";

Hope, it helps :)

Update:
I just realized, it's better to use regular expression to handle these kind of requirements as shown by @OriginalGriff.

Posted 17-Apr-15 20:17pm

Suvendu Shekhar Giri

Updated 17-Apr-15 21:11pm

v3

Comments

Asad_Iqbal 18-Apr-15 2:33am

Index and length must refer to a location within the string.
Parameter name: length

i am getting this probelm Suvendu....

Suvendu Shekhar Giri 18-Apr-15 2:41am

Check the updated solution. It was mistake at my end. Sorry !

Asad_Iqbal 18-Apr-15 2:53am

the updated solution gives an output "and i am 19 years old."

Suvendu Shekhar Giri 18-Apr-15 3:12am

Oh :( updated the solution to have the exact result. But it uses some static appending so I believe you can try finding a solution using regular expressions.

Asad_Iqbal 18-Apr-15 4:11am

i agree with u too because this code works fine but ignore all sentences after this particular sentence