2008年9月16日 · User kokos answered the wonderful Hidden Features of C# question by mentioning the using keyword. Can you elaborate on that? What are the uses of using?

A using statement can be exited either when the end of the using statement is reached or if an exception is thrown and control leaves the statement block before the end of the statement.

2013年7月30日 · Use using if you want all the resources that the context controls to be disposed at the end of the block. When you use using, the compiler automatically creates a try/finally block and calls dispose in the finally block.

The using syntax has an advantage when used within templates. If you need the type abstraction, but also need to keep template parameter to be possible to be specified in future. You should write something like this.

The problem with putting using namespace in the header files of your classes is that it forces anyone who wants to use your classes (by including your header files) to also be 'using' (i.e. seeing everything in) those other namespaces. However, you may feel free to put a using statement in your (private) *.cpp files.

There seem to be different views on using 'using' with respect to the std namespace. Some say use ' using namespace std', other say don't but rather prefix std functions that are to be used with '...

2010年6月20日 · Is this possible using a using statement C# SQL? private static void CreateCommand(string queryString, string connectionString) { using (SqlConnection connection = new SqlConnection( ...

2013年3月14日 · How to generate a .pem CA certificate and client certificate from a PFX file using OpenSSL.

2010年7月21日 · When you iterate through dictionaries using the for .. in .. -syntax, it always iterates over the keys (the values are accessible using dictionary[key]). To iterate over key-value pairs, use the following:

2017年4月5日 · I want to install a Windows service using a Windows command prompt (not the Visual Studio command prompt). How do I do this?