How do I remove only part of a string in c#

Question

1.80/5 (2 votes)

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I have tried a lot of ways to get rid off a part of a string, for example lets take string s = "ABCDEFG*HI" and I wanted to remove the * symbol ONLY.

I have seen a lot of examples in StackOverflow in doing such thing but the solution they provided only supports removing the selected index of a CHAR and forward...

C#

string s = "ABDCEFG*HI";
s = s.Remove( s.LastIndexOf('*') );
//The output was supposed to be ABCDEFGHI without the * symbol, but in reality, it turns out to be ABCDEFG

I also tried using s.IndexOf instead of s.LastIndexOf, but still no difference...
Any help would be much appreciated, thank you

Posted 7-Jul-14 8:21am

User 8481904

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Comments

Sergey Alexandrovich Kryukov 7-Jul-14 15:19pm

What's wrong with just reading original MDSN help page in System.String? It will tell you everything.
—SA

2 solutions

Solution 2

C#

string RemoveCharacter(string source, char c)
  {
      return source.Replace(c.ToString(),"");
  }

For example to remove all the character '*' in "ABCDEFGH*IJK*LMN*PQRST*UVWXYZ**"

C#

string s="ABCDEFGH*IJK*LMN*PQRST*UVWXYZ**";
s=RemoveCharacter(s,'*');

Posted 7-Jul-14 9:40am

Yang Kok Wah

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Leo Chapiro · Accepted Answer · 2014-07-07T08:24:00

Solution 1

Try this:

C#

string s = "ABDCEFG*HI";
s = s.Replace("*HI", "HI");

Surely you can use Remove as well, take a look: http://msdn.microsoft.com/de-de/library/d8d7z2kk%28v=vs.110%29.aspx[^]

C#

public string Remove(
    int startIndex,
    int count
)

In your case it would be something like this (not tested):

C#

string s = "ABDCEFG*HI";
int nIndex = s.LastIndexOf('*');
if (nIndex > 0)
   s = s.Remove( nIndex, nIndex+1 );

Posted 7-Jul-14 8:24am

Leo Chapiro

Updated 7-Jul-14 8:35am

v3

Comments

[no name] 7-Jul-14 14:31pm

I tried your first code and it works like a charm, thanks :)

Leo Chapiro 7-Jul-14 14:35pm

You are welcome! :)