To answer the original question, to match filepaths with.xls or .xlsx as a file extension, use the following regex"When you have a problem that needs regular expressions, now you have TWO problems" -- Jamie Zawinski Jan Jansz Nov 13 17 at 15:19. The following Regular Expression is used for validating the selected file in ASP.Net FileUpload control using its extension. The Regular Expression can be modified to be used for multiple File extensions by simply adding and removing the extensions. I have a regular expression used to check if the path contains file with extension .js or .css.REGEX DEMO. Why regexing the world? Use the native C methods Matching the file name extension is not trivial for all possible situations. Scott proposes a very simple, but elegant solution to recognize a file name with extension based on regular expression. I have a program that uses C regular expressions to do file renaming. You define the search, the replacement, and the file name, and it outputs the new file name.The problem Ive run in to is in writing a regular expression to truncate a file name with the extension preserved. in my above code I am trying to parse an asp source file and a tag name to a function where the above regular expression can be used to extract the line of tag. for an example, if I mention the tagTextBox, this line should return all the lines with .
Im doing this in C. its urgent. Regex . In the regular expression of C, the dot character (.) Is a special character. It represents one or more characters.Console.WriteLine("File Name " match.