String method to remove a char sequence from a string

Question

If I have:

string st1 = "this.is.a.string.type";
string st2 = "string";

Is there any built-in String method to remove st2 from st1 if the exact sequence of chars exists in st1? So I want to end up with "this.is.a..type".

Jon Skeet · Accepted Answer · 2011-02-22 13:47:37Z

5

The simplest would be:

st1 = st1.Replace(st2, "");

but that isn't necessarily very efficient.

edited Feb 22, 2011 at 13:47

Jon Skeet

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answered Feb 22, 2011 at 13:47

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Bala R · Accepted Answer · 2011-02-22 13:47:53Z

4

string st3 = st1.Replace(st2, string.Empty);

answered Feb 22, 2011 at 13:47

Bala R

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1 Comment

EightyOne Unite Over a year ago

+1 for string.empty. I know there's no difference but it still makes me squirm when I see "".

Øyvind Bråthen · Accepted Answer · 2011-02-22 13:46:57Z

0

This will work out for you

string st3 = st1.Replace(st2,"");

This will remove all instances of st2 from st1, and return the result

answered Feb 22, 2011 at 13:46

Øyvind Bråthen

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2 Comments

Jon Skeet Over a year ago

Only if the OP uses the return value. As a statement on its own (as shown), it's just eating CPU.

Øyvind Bråthen Over a year ago

@Jon - I fixed it before I saw your comment, but that is of course absolutely correct (as usual).

Anders Zommarin · Accepted Answer · 2011-02-22 13:47:13Z

0

What about:

st1.Replace(st2, "")

it will replace all occurrences though.

answered Feb 22, 2011 at 13:47

Anders Zommarin

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