The following works in vb.net, and basically only allows characters on a standard US Keyboard. Any other character pasted gets deleted. I use the following regular expression code:
"[^A-Za-z0-9\[\{\}\]`~!@#$%\^&*\(\)_\-+=\\/:;'""<>,\.|? ]", "")
However when I try to use it in C# it won't work, I used '\' as a escape sequence. C# seems a bit different when it comes to escape sequences? Any help would be appreciated.
Prefix the string with @. That's it. From there you can use the regex string from VB as is (including doubling up on the " character).
// Note: exact same string you're using, only with a @ verbatim prefix.
string regex = @"[^A-Za-z0-9\[\{\}\]`~!@#$%\^&*\(\)_\-+=\\/:;'""<>,\.|? ]";
string crazy = "hĀečlĤlŁoźtƢhǣeǮrȡe";
Console.WriteLine(Regex.Replace(crazy, regex, ""));
Output:
hellothere
Prefix your string with "@" and prefix quotes within the string with "\".
I.e. this string
abc\def"hij
in C# would be encoded as
@"abc\def\"hij"
You need to escape your " character. Do this by putting a \ before your " character.
"[^A-Za-z0-9[{}]`~!@#$%\^&*()_-+=\/:;'""<>,.|? ]"
should become
"[^A-Za-z0-9[{}]`~!@#$%\^&*()_-+=\/:;'\"\"<>,.|? ]"
If you use the @prefix before this, it will treat the backslash literally instead of an escape character and you wont get the desired result.
@ onto the string literal, the regex should work as it is. Specifically, the double-quote is already escaped with another double-quote.Escape your characters:
"[^A-Za-z0-9[{}]`~!@#$%\^&*()_-+=\\/:;'\"<>,.|? ]"
A good tool for regular expression design and testing (free) is: http://www.radsoftware.com.au/regexdesigner/
"").You need to escape you regex for use in C#
[^A-Za-z0-9\[\{\}\]`~!@#$%\^&*\(\)_\-+=\\/:;'\"<>,\.|? ]
Try this one!
