如何使用1个路径制作多个文件？

Question

How to make a variable in a path in c#? For like creating a user register/login/stats.

string UserName = "";

string path = @"c:\File\File\" + UserName + ".text";

I know this doesn't work, maybe does anybody know how to do it else, I search around and never found a solution to get a path like this.

I hope somebody will solve it!

Answer 1

您可以使用/（斜杠）代替\\（反斜杠），也可以转义反斜杠，并在其后添加另一个反斜杠：

string path = "c:\\File\\File\\"+ Username + ".text";

Answer 2

That way is absolutly OK for simple concating strings. There are other ways like

string.Format function

or the

StringBuilder class

This is all absolutly OK but if you will be absolutly sure that you create a vaild Path use

Path.Combine

Answer 3

The only reason that doesn't work is because of the escape characters. Any of the following will work;

string path = "c:\\File\\File\\"+ Username + ".txt"; // escape first slash, second appears in string
string path = @"c:\File\File\"+ Username + ".text"; // take literal string, escape sequences included
string path = "c:/File/File/"+ Username + ".text"; //forward slash is not an escape

Answer 4

You can easily get an array of invalid file name characters

char[] invalidPathChars = Path.GetInvalidPathChars();

foreach (char ch in invalidPathChars)
{
   Username = Username.Replace(ch.ToString(), "");
}