How do I use Debug.Writeline in a razor file?

问题

I'm trying to use Debug.Writeline in a razor web page and I keep getting invalid arguments messages.

@System.Diagnostics.Debug.WriteLine("asdf");

returns

CS1502: The best overloaded method match for 'System.Web.WebPages.WebPageExecutingBase.Write(System.Web.WebPages.HelperResult)' has some invalid arguments

回答1:

Debug.WriteLine does not return a value so it can't be written out using @. Try:

@{System.Diagnostics.Debug.WriteLine("asdf");}

来源：https://stackoverflow.com/questions/21638874/how-do-i-use-debug-writeline-in-a-razor-file