string replacement in C#

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.NET3.5

Hi,
my string containing "\\\\" and I want to replace it with "\\".
eg: The Original string is "domainName\\\\myname" and resulted string should be "domainName\\myname".

I have tried string.Replace("\\\\", "\\") but this is not working.

How can I find expected resulted string?.

Thanks.

Posted 11-Jun-12 1:42am

ashriv

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5 solutions

Solution 5

hi ashriv
the original string = "domainName\\\\myname" itself is equivalent to "domainName\\myname" so i don't think you need to apply replace method to get the desired output. the explanation Sandeep has given is absolutely correct.

Posted 14-Jun-12 3:01am

NaveenNeo

Solution 4

hi
it should work

C#

string s = "\\\\";
string t = s.Replace("\\\\", "\\");

Posted 11-Jun-12 2:15am

bhaskarareddy

Updated 11-Jun-12 2:35am

v2

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Rahul Rajat Singh · Accepted Answer · 2012-06-11T01:56:00

Try this code:

C#

string s = "\\\\";

string t = s.Replace("\\\\", "\\");

This is working fine. Perhaps, you were not considering the fact that strigns are immutable and thus getting the problem. the string.replace will replace the string and return new string. it will not update the existing string.

Hope it helps and work for you. let me know if my understanding in not correct. i will try to refine my answer.

RahulVerma116 · Accepted Answer · 2012-06-11T01:57:00

Solution 2

VB

Dim str As String = "domainName\\\\myname"
     str = str.Replace("\\\\", "\\")

check this.

Posted 11-Jun-12 1:57am

RahulVerma116

Updated 14-Jun-12 3:14am

v2

Sandeep Mewara · Accepted Answer · 2012-06-11T02:00:00

Try using escape sequence ('\')(back slash):

C#

stringOriginal.replace("\\\\\\\\","\\\\");  //if string contains 4 backslashes in actual this will replace with 2

Details here: MSDN: Escape Sequences[^]

But, I believe actual issue would be that you are worried that your string is showing as 'domainName\\\\myname' -> thinking this is wrong you want to correct it. But, this is perfectly fine. You don't need to do any change. '\' needs a escape sequence and CLR automatically applies it at the time of computation. While applying the value it will be 'domainName\\myname' only.
If you want to avoid confusion, define string with @ character.
Like:

C#

string mypath = @"domainName\\myname";