Question

I have :

string Combine = Path.Combine("shree\\", "file1.txt");
string Combine1 = Path.Combine("shree", "file1.txt");

Both gives same result :

shree\file1.txt

What actually happen behind Path.Combine?Which is the best coding practice to do this.please clear my vision.Thanks.

Answer 1

If the first path (shree or shree\\) does not end with a valid separator character (e.g. DirectorySeparatorChar) it is appended to the path before concatenation.

So

string path1 = "shree";
string path2 = "file1.txt";
string combined = Path.Combine(path1, path2);

will result in “shree\file1.txt”, while

string path1 = "shree\\";

already contains a valid separator character, so the Combine method will not add another one.

Here you typed two slashes in the string variable (path1). The first one just acts as an escape character for the second one. This is the same as using a verbatim string literal.

string path1 = @"shree\";

More information on the Combine method can be found on MSDN:

http://msdn.microsoft.com/en-us/library/fyy7a5kt.aspx