how to remove last strings in textbox in C#

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Hi how to remove last strings in textbox.

if my search criteria is like .net and asp.net and and and and....
then i want to remove last strings(i.e last and's only).
so how to remove last strings in textbox

Posted 27-May-11 0:16am

Member 7932936

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yesotaso 29-May-11 5:21am

Please confirm the required output. What do you mean by "last stringS(i.e last and'S"?
".net and asp.net and and and" would be modified to ".net and asp.net and and" or ".net and asp.net"

Member 7932936 30-May-11 0:55am

no.i want to remove last "and"

3 solutions

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Ashishmau · Answer 1 · 2011-05-27T00:19:00

Solution 1

Use Substring

search on net

C#

string s = ".net and asp.net";
string output = s.Replace("and", "");

Posted 27-May-11 0:19am

Ashishmau

Updated 27-May-11 0:26am

v2

Comments

Member 7932936 27-May-11 6:22am

yes.i used substring but it works only to remove one "and" only.i want to remove many "and"'s in my string.then how to remove many "and"'s

Ashishmau 27-May-11 6:25am

So,in that case, u can use replace method. see my improved answer

Tarun.K.S 27-May-11 6:40am

OP wants to remove the last string's, you are removing all of them.

Ashishmau 27-May-11 6:43am

First of all, Read his comment carefully before downvoting..

Tarun.K.S 27-May-11 6:53am

And I would like you to read his original question.

Ashishmau 27-May-11 7:12am

u Should ask OP for more details (by seeing his comment and question) rather than assuming and downvoting

Tarun.K.S 27-May-11 7:15am

Both his question and comments are clashing. I will vote a four for the confusion OP has caused.

Member 7932936 27-May-11 6:57am

string output=s.replace("and","");
I used this but it does not working.
it replace only last two characters in my last string.
that is it replaces only 'nd' as ""

Ashishmau 27-May-11 7:09am

First Thing, u modify ur question(give more details) as it creates lots of confusion here.

Member 7932936 27-May-11 7:48am

if(TextBox1.Text.EndsWith("and"))
{
// this removes only last "and" only.But I want to remove total last"and"'s
TextBox1.Text = TextBox1.Text.Substring(0,TextBox1.Text.Length - 3);
// if i use this shows error like index out of range exception
TextBox1.Text.Replace("and", " ");

//TextBox1.Text.TrimEnd();

TextBox1.Text.Trim();

}
//}

Liju Sankar · Answer 2 · 2011-05-27T00:59:00

Solution 2

Hi,
Please try String.TrimEnd

C#

string s = @".net and asp.net and" ;
string output = s.TrimEnd("and");

Posted 27-May-11 0:59am

Liju Sankar

Comments

Tarun.K.S 27-May-11 7:17am

I think it should be string output = s.TrimEnd(new char[]{'a','n','d'});

Member 7932936 27-May-11 8:04am

it is also showing error like index was out of bound arrey exception

Member 7932936 30-May-11 1:13am

string output = s.TrimEnd("and");
This removes only last "and".But I Want to Remove all last "and".
That means if my string ends with and and and and and and .....then i want to remove all last "and".How can remove ????

Kim Togo · Answer 3 · 2011-05-28T21:10:00

Solution 3

Use regular expression string: and$

C#

string query = Regex.Replace(".net and asp.net and", @"and$", string.Empty, RegexOptions.IgnoreCase | RegexOptions.Singleline);

Output will be:

".net and asp.net "

Or replace regular expression string to \w+$, this will find the last word in a string.

Posted 28-May-11 21:10pm

Kim Togo

Updated 28-May-11 21:13pm

v2