Server. mappath (PATH)
The
MappathMethod maps the specified relative or virtual path to the corresponding physical directory on the server.
Parameters (msdn: MS-help: // Ms. msdnqtr.2003feb. 2052/iisref/htm/ref_vbom_seromatrix .htm)
Usage:
1. server. mappath ("/") Application ProgramThe location of the root directory is C:/inetpub/wwwroot/
2. server. mappath ("./") indicates the current directory of the page
Note: It is equivalent to the physical file path on the page where server. mappath ("") is returned.
3. server. mappath ("../") indicates the directory at the upper level.
4. server. mappath ("~ /") Indicates the directory of the current application. If it is the root directory, it is the root directory. If it is a virtual directory, it is the location of the virtual directory, such as: C: /inetpub/wwwroot/example/
Note: It is equivalent to server. mappath ("~ ").
I don't know if it is correct. I'm studying ......
In addition, the following statements are equivalent:
String filename = server. mappath ("./") + @ "/Web. config ";
String filename = server. mappath ("./") + "/Web. config ";
String filename = server. mappath ("") + @ "/Web. config"
Example 1: Modify the attribute value of a node in Web. config
