麻烦在C＃

Question

请帮忙环境变量，我有一个错误：

File.Copy(@"%USERPROFILE%\AppData\Local\Google\Chrome\UserData\Default\Bookmarks", @"%userprofile%\Music\Bookmarks", true); 

C＃看不到这条道路:C

Answer 1

使用Windows变量之前，您应该使用Environment.ExpandEnvironmentVariables：

var path1 = @"%USERPROFILE%\AppData\Local\Google\Chrome\UserData\Default\Bookmarks"; 
var filePath1 = Environment.ExpandEnvironmentVariables(path1); 

var path2 = @"%userprofile%\Music\Bookmarks"; 
var filePath2 = Environment.ExpandEnvironmentVariables(path2); 

File.Copy(filePath1, filePath2, true);