Append Date and Time to the XML file name in C#

String pathname = "D:\Misc\BookRequest" + datetime.now.ToString("yyyy-MM-dd HH:mm tt") + ".xml"

XmlWriterSettings settings = new XmlWriterSettings();
using(XmlWriter xmlwriter = XmlWriter.Create(pathname,settings)

Path is not valid. Pls check the attachment.

Even i tried with pathname = @"D:\Misc\Book..." then the path is set as "D:\\Misc\\Book.."
It's putting extra "\" !!
Error.jpg

Hi cimscims;

The string pathname posted by @esskayb2d has some errors. The compile is interpreting the \M and \B in the pathname as control characters. To correcting the issue placing @ before the first double quote as shown in the statement below.

String pathname = @"D:\Misc\BookRequest" + datetime.now.ToString("yyyy-MM-dd HH:mm tt") + ".xml";

Hi FernandoSoto,

I tried using "@" before the statement. As i said earlier it's puttin extra "\" like D:\\Misc\\BookRequest...

Looking at strings in the Watch, or Locals Windows of the debugger or hovering over a string veritable will always escape the character \ by placing another \ in front of the first one. In other words if you have the following line of code:

 String path = @"D:\Misc\BookRequest";

Will be seen in all the three methods of viewing it as I stated above as the following:

"D:\\Misc\\BookRequest"

Having \\ in place of \. In a C# string the character following \ has a special meaning for example \n is a new line character \t is a tab character. In order for the compiler to know that \ is a forward slash with no special meaning you need to escape the \ by placing another \ next to it. Therefore that is not an issue and should not be causing a problem.

The following two lines in a C# code are the same.

String path = "D:\\Misc\\BookRequest";
String path = @"D:\Misc\BookRequest";

Extra "\" is not an issue for my problem.

it works fine when i do
String pathname = @"D:\Misc\BookRequest.xml";

It doesn't work when i try to append the Date and Time to the filename
String pathname = @"D:\Misc\BookRequest" + datetime.now.ToString("yyyy-MM-dd HH:mm tt") + ".xml";

Hi FernandoSoto,

Sorry we both posted our comments at the same time.

You are correct that the below statements are the same. That's what i tried to say in my earlier post.

String path = "D:\\Misc\\BookRequest";
String path = @"D:\Misc\BookRequest";

Yes it would cause a problem the way you posted it. C# code is case-sensitive datetime and now needs to be as shown in the code snippet below.

String pathname = @"D:\Misc\BookRequest" + DateTime.Now.ToString("yyyy-MM-dd HH:mm tt") + ".xml";

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Still getting the error. Please see attached.
Error.jpg

This works
String pathname = @"D:\Misc\BookRequest" + DateTime.Now.ToString("yyyy-MM-dd") + ".xml";

If the time is appended then it says given path's format is not supported..

Thanks FernandoSoto..that worked.

Not a problem cimscims, glad to help.