.net-4.0

问题 For whatever reason, IBM uses https (without requiring credentials) for their RSS feeds. I'm trying to consume https://www.ibm.com/developerworks/mydeveloperworks/blogs/roller-ui/rendering/feed/gradybooch/entries/rss?lang=en with a .NET 4 SyndicationFeed. I can open this feed in a browser and it loads just fine. Here's the code: using (XmlReader xml = XmlReader.Create("https://www.ibm.com/developerworks/mydeveloperworks/blogs/roller-ui/rendering/feed/gradybooch/entries/rss?lang=en")) { var

问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 3 years ago . I am wiorking on a web application when i click on to fetch data from database i get the following error: ExecuteReader requires an open and available Connection. The connection's current state is closed. ExecuteReader requires an open and available Connection. The connection's current state is closed. I declare

问题 XAML: <ListBox x:Name="MyTitleBox" ItemsSource="{Binding}"/> <ListBox x:Name="MyInfoBox" ItemsSource="{Binding}"/> In C#: MyTitleBox.ItemsSource = new List<string>(new string[] {"ID:", "Info:", "More Info:"}); MyInfoBox.ItemsSource = new ObservableCollection<string>(MyMainInfo.ToString().Split(',').ToList<string>()); I currently have 2 list boxes next to each other because I need to handle their ItemsSource programmatically. I know there must be a better way to merge the two. Essentially the

问题 I develop an application that has to run on Windows XP (so the .Net Framework has to be 4.0). I need to reference Async BCL packages in order to use async/await in some of my projects. I have correctly referenced the following packages to the targeted projects as mentioned by ThomasArdal in his answer (Async Targeting Pack without Visual Studio 2012 on BuildServer): Microsoft.BCL Microsoft.BCL.Async Microsoft.BCL.Build Unfortunately the build fails when it is run from TeamCity on my CI server

问题 Is is possible to perform CPU Sampling in VS2010 via the Attach To Process option? When I do use that option it seems to always default to Memory Profiling. I can't launch CPU Sampling with the wizard because the ridiculous security software on our work PCs don't allow the DLL injection it uses. 回答1: If you select Analyze\Profiler\New Performance Session , the Performance Explorer will open with a new performance session. In the properties of this item, you can specify the type of profiling

问题 In my view model, I have a IMessageService, which is initialized in the constructor: private IMessageService messageService; public MyViewModel() { messageService = ServiceLocator.Default.ResolveType<IMessageService>(); } Its Show method works, but ShowError, ShowInformation and ShowWarning (anything in need of a resource, here the icons) crash with a MissingManifestException pointing towards Catel.Properties.Resources.resources manifest. Is the error on my side (wrongly installed Catel) or

问题 When I attempt to open my Windows Forms application (I'll call it MyApplication.exe ) on a machine other than my dev machine, a dialog window pops up saying: MyApplication has stopped working Windows can check online for a solution to the problem Check online for a solution and close the program Close the program Details Problem signature: Problem Event Name: CLR20r3 Problem Signature 01: myapplication Problem Signature 02: 1.2.0.0 Problem Signature 03: 51c34395 Problem Signature 04: mscorlib

问题 I'm new to web development. Wanted to try my hand at ASP.NET + JuiceUI. Starting from the basic web site project template in visual studio, I wanted to try and get the JuiceUI Datepicker control in a web page. I followed the instructions and installed JuiceUI into my project with nuget. But when I tried to get a juice Datepicker into my page it simply does not work: Default.aspx <asp:Content runat="server" ID="FeaturedContent" ContentPlaceHolderID="FeaturedContent"> <section class="featured">

问题 I recently had a problem concerning serialization of private members of a class. here The problem was that i tried to serialize private members using XMLSerializer , i also tried the SoapFormatter which couldn't serialize them either. The only reason i wanted to serialize in one of those two formats was that i wanted to be able to check serialized values. After that, i tried the BinaryFormatter which could serialize private members without any problems. Why is the BinaryFormatter serializing

问题 How I can simulate Derived Table with linq? Consider this Code: SELECT * FROM (SELECT * FROM Mytbl) AS tmp WHERE tmp.ID=1 How I can write this with Linq ? thanks EDIT 1: How to convert this to linq?: select convert( decimal(10,1), ROUND(A.c2*100,8)), convert( decimal(10,1), ROUND(A.c3*100,8)) from ( SELECT ( SELECT CONVERT(INT, COUNT(ID)) FROM tbl WHERE (col06 >= @param_Min and col06 <= @param_Max ) ) / ( SELECT CONVERT(INT, COUNT(ID)) FROM tbl WHERE (col06 >= 10 ) ) as c2 ( SELECT CONVERT