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问题 I have a card reader ( no memory stick is inserted ). When i insert into my compter it shows an empty drive in My Computer... Is it possible to know whether a drive is having a media ( sorry i am not sure how to call it ) or not... 回答1: I find the suggestion of MSalters to use IOCTL_STORAGE_CHECK_VERIFY very good. There are a small trick in the usage of IOCTL_STORAGE_CHECK_VERIFY . Before the usage of IOCTL code in the function DeviceIoControl one need to open the corresponding device with

问题 I'm trying to call the OpenThemeData (see msdn OpenThemeData) function but I couldn't determine what are the acceptable Class names to be passed in by the pszClassList parameter. HTHEME OpenThemeData( HWND hwnd, LPCWSTR pszClassList ); Could anybody tell me what are the acceptable class names that I can pass into that parameter? Thanks! 回答1: You can look in "AeroStyle.xml" as a previous poster noted, which gives an exact list for Vista/Aero. However, if you want to play safe (and you probably

问题 As I read http://msdn.microsoft.com/en-us/library/ms165394.aspx: For VB: Inside the Snippet element, add the References element and all of the required child elements that add a reference to the project when the snippet is inserted. For C# Visual C# code snippets to do not support the References section, so a reference to System.Windows.Forms.dll must be added to the project manually What fundamental reason prevents C# to support References like VB ? Update: I saw this posted http:/

问题 I'm trying to program in a performance counter into my C# application that launches another process and checks the processor usage of that launched process. As I understand it, the performance counter class requires me to assign a category name , a counter name, and a process name. I can get the process name easily enough, but is there a list of some sort on the internet that has all possible category and counter names I can assign? I tried scouring MSDN for something like this, but I didn't

问题 I know that this isn't exactly programming question, but it is tightly related - How the hell do I set MSDN to display everything in English? I'm Czech, and every KB or documentation article it automatically translates it to Czech with their translator, which result just in gibberish, and switching it to English requires couple of searching and clicks. 回答1: Very legitimate question, I think. You need to modify the url like explained here. In your case change cz-cz to en-us. Or better, let it

问题 I'm looking for a plugin or way to simply go from any namespace, type, method, property, etc in my .Net code to the MSDN page that covers it via a context menu item or hyperlink-like mechanism. Does anyone know of anything that will do that? The "Go to Definition" option when you right click almost covers this, but it doesn't quite work well enough - no support for namespaces and you often end up at an ugly metadata page. I'm still on vs2005, so if vs2008 is better at this I'd like to know

问题 Very new to POCO, find some google links but found many different stories. Some connected with Entity framework, lazy loading etc. Some says its a pure .det class. Atleast MSDN. LINK FOR DEFINE POCO FROM MSDN: msdn.microsoft.com/en-us/library/dd456872.aspx I trust MSDN(a simple defination), and assume that it is a pure .NET Class. Now let me come to the point. IF it is pure .net class with only properties inside it than it is equilateral to "MODEL" in MVC. example. [Required(ErrorMessage =

问题 I have found that on Windows 7 64 bit, on a machine with a domain name, GetUserNameEx( 3, .... ) which should get the extended name format DisplayName (==3), into a buffer, works fine. However, it does not work on Windows 7 32 bit, vm that is on a workgroup, rather than on a domain, it returns ERROR_NONE_MAPPED. How do you read the person's friendly name "Fred Smith", for example, in a way that works on Windows? GetUserNameEx is manifestly broken. Actually, not broken, I'm told, just not

问题 I found a topic on MSDN that talks that yes, this is possible. I did a test that seems to break this statement: using System; namespace Test { class Program { static void Main(string[] args) { Foo f = new Foo("1"); Console.WriteLine(f.Bar); // prints 1 f.Test("2"); Console.WriteLine(f.Bar);// successfully prints 2 } } class Foo { public Foo(string b) { this.Bar = b; } public string Bar { get; private set; } public void Test(string b) { // this would be impossible for readonly field! // next

问题 I found a topic on MSDN that talks that yes, this is possible. I did a test that seems to break this statement: using System; namespace Test { class Program { static void Main(string[] args) { Foo f = new Foo("1"); Console.WriteLine(f.Bar); // prints 1 f.Test("2"); Console.WriteLine(f.Bar);// successfully prints 2 } } class Foo { public Foo(string b) { this.Bar = b; } public string Bar { get; private set; } public void Test(string b) { // this would be impossible for readonly field! // next