Replace Path in Text File C#

SIVA

Hi,

I am trying to replace path in given text file. I am using regular expression for that.

filePath = txtFilePath.Text;
oldPath = txtOld.Text;
newPath = txtNew.Text;

string output = File.ReadAllText(filePath);
output = Regex.Replace(output, oldValue, newValue, RegexOptions.IgnoreCase);
File.WriteAllText(filePath, output);

I have tried oldPath.Replace(@"\\", @"\") also but now use.
It throwing an exception like unrecognised escape sequence. Please let me know the solutions.

4 Replies

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Upendra Pratap Shahi11y ago
your code seems to extra escape sequence, try to remove this.
SIVA11y ago
Please understand the problem and reply for the question. I have tried all the links, which specified. I am taking the path from textboxes. how can i add @ for that string. still after replacing getting // double slashes.

Raja T11y ago

Hi Siva,

Try this code

You can either use a double backslash each time

string foo = "D:\\Projects\\Some\\Kind\\Of\\Pathproblem\\wuhoo.xml";

or use the @ symbol

string foo = @"D:\Projects\Some\Kind\Of\Pathproblem\wuhoo.xml";

Refer below url

http://stackoverflow.com/questions/1302864/unrecognized-escape-sequence-for-path-string-containing-backslashes

Abrar Ahmad Ansari11y ago
http://stackoverflow.com/questions/16019812/why-is-the-regex-match-throwing-an-exception

http://stackoverflow.com/questions/22657517/regex-generate-exceptionwith-unescaped-string