How can I cut any string when he het last specific string?

Question

1.00/5 (1 vote)

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I have a string like

C#

string str=" Motin AS fahami.menu.Asgar AS ASRAF"

I always want to get the string befire last occurring AS. This AS is always consider as single AS. This 'AS' will not consider the portion ASRAF where first two word also indicate AS.

The out will be same as 'Motin AS fahami.menu.Asgar'.

if the code is like that

C#

string str=" Motin AS fahami.menu.ASIM AS SUVASISH"

then the out put will : Motin AS fahami.menu.ASIM

can anyone provide me the code for that?

Posted 21-May-14 23:58pm

sachi Dash

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5 solutions

Solution 5

string str=" Motin AS fahami.menu.Asgar AS ASRAF"
var lst=str.Split(" ",str).ToList();
lst.RemoveAt(lst.Count()-1);
lst.RemoveAt(lst.Count()-2);

string substring=string.Join(" ",lst)

Posted 22-May-14 3:01am

Phanindra Baddula

Comments

CHill60 22-May-14 9:07am

This doesn't even compile! Nor would it work if it did.

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Thanks7872 · Accepted Answer · 2014-05-22T00:06:00

Solution 1

See this:

C#

string str=" Motin AS fahami.menu.ASIM AS SUVASISH";
string str2;
int i = str.LastIndexOf(" AS ");
str2 = str.Substring(0, i);

Posted 22-May-14 0:06am

Thanks7872

Sprint89 · Accepted Answer · 2014-05-22T00:26:00

A fairly clunky way would be:

C#

string delimiter = " AS ";  //note the spaces either side
string str = "Motin AS fahami.menu.ASIM AS anything that doesn't contain the delimiter";
string[] elements = System.Text.RegularExpressions.Regex.Split(str, delimiter);
string result = elements[0] + delimiter + elements[1];

Ziee-M · Accepted Answer · 2014-05-22T00:10:00

Hi, if i did understood right your need,
Then here is what you need:

C#

string str=" Motin AS fahami.menu.ASIM AS SUVASISH"

if(str.Contains(" AS ")) //if you use indexOf in a string without being sure the string conatins your search string, an exception will be thrown
{               
                //gett the index of the last occurance
                int idexOfLastOccurance = str.LastIndexOf(" AS ");
                //Remove all the text starting from the index      
                str = str.Remove(idexOfLastOccurance);
}

Bh@gyesh · Accepted Answer · 2014-05-22T00:11:00

Solution 3

Hi,

use str.substring(str.LastIndexOf('AS')+1)

Regards,
Bh@gyesh

Posted 22-May-14 0:11am

Bh@gyesh

Comments

Sprint89 22-May-14 6:24am

I tried that on "Motin AS fahami.menu.ASIM AS SUVASISH" and got "SISH"