Question

I don’t know what is wrong with the following string:

"Report(" + System.DateTime.Now.ToString("dd-MMM-yyyy") + "  to  " + System.DateTime.Now.AddMonths(-1).ToString("dd-MMM-yyyy") +  ")"

I can’t get the concatenated string. I am getting Report(29-Dec-2009. That’s all and
the rest gets left out from the string.

What is the reason?

Answer 1

Try this:

string filename = 
    String.Format(
        "Report({0:dd-MMM-yyyy} to {1:dd-MMM-yyyy})",
         System.DateTime.Now, System.DateTime.Now.AddMonths(-1));

EDIT: Since in your download box you got your filename broken in first whitespace, you could to try ONE of these:

filename = HttpUtility.UrlEncode(filename); // OR
filename = """" + filename + """";

Seems some browsers doesn’t handles whitespaces very nicely: Filenames with spaces are truncated upon download. Please check it you can to download other filenames with whitespace in other sites.