.net-4.0

问题 Today one of my colleague showed me this trick in visual studio. He types prop and hits tab twice This makes the visual studio automatically expands that to a property. No doubt, its a very cool feature. But what is this trick called as ? And is there any trick the same way i can type in method so that the IDE generates a method stub for me? Thanks. 回答1: The tricks you are referencing are called "code snippets" and are really useful for faster code writing. A complete list of default code

问题 I am having a problem with code that worked fine in .NET 2.0 but is giving this error under .Net 4. Build (web): Inheritance security rules violated while overriding member: 'Controls.RelatedPosts.RenderControl(System.Web.UI.HtmlTextWriter)'. Security accessibility of the overriding method must match the security accessibility of the method being overriden. This is in DotNetBlogEngine. There were several other security demands in the code that .NET 4.0 doesn't seem to like. I followed some of

问题 I have a table Item (ItemId int PK, Title vc, Description vc) I created a testing view called ItemView: SELECT * FROM Item. I added this view to my model, removed all the keys but the real key, added a 1-1 association, and mapped it, but I get 2 errors: The table/view 'dbo.ItemView' does not have a primary key defined. The key has been inferred and the definition was created as a read-only table/view. Error 3021: Problem in mapping fragments starting at line xxxx: Each of the following

问题 I have a table Item (ItemId int PK, Title vc, Description vc) I created a testing view called ItemView: SELECT * FROM Item. I added this view to my model, removed all the keys but the real key, added a 1-1 association, and mapped it, but I get 2 errors: The table/view 'dbo.ItemView' does not have a primary key defined. The key has been inferred and the definition was created as a read-only table/view. Error 3021: Problem in mapping fragments starting at line xxxx: Each of the following

问题 I have a number of test classes and methods that copy a particular directory like so: [TestClass, DeploymentItem("LanguageData", "LanguageData")] public class OcrTests { [TestMethod] public void Can_Capture_Field() { // some code that expects the LanguageData directory to be in the test results Out directory } // etc } [TestClass] public class OcrBuilderTests { [TestMethod, DeploymentItem("LanguageData", "LanguageData")] public void Can_Build_Specific_Ocr_Engine_Implementation() { // some

问题 I have a list of int that's stored in the DB in the form of a string with commas in between (4345,324,24,2424,64567,33...). This string could become quite large and contain 2-3 thousand numbers. It's stored in the DB and used quite frequently. I'm thinking that instead of reading it from the DB every time it's needed, it'd be better to store it in the session after it's loaded the first time. How much memory would a list of 1,000 int require? Does the memory size also depend on the int itself

问题 I realize .NET 4.0 is in Beta, but I'm hoping someone has a resolution for this. I'm trying to create a memory mapped file from a DLL: FileStream file = File.OpenRead("C:\mydll.dll"); using (MemoryMappedFile mappedFile = MemoryMappedFile.CreateFromFile(file, "PEIMAGE", 1024 * 1024, MemoryMappedFileAccess.ReadExecute)) { using (MemoryMappedViewStream viewStream = mappedFile.CreateViewStream()) { // read from the view stream } } Unfortunately, no matter what I do, I always get an

问题 I recently asked a developer to write a library using the new multithreading capabilities of .NET 4.0. He's done a great job, but I'm concerned that the Task logic is repeated throughout the code and not nicely encapsulated. I'm also concerned that this creates a problem when it comes to testing. Normally, I test by creating a seam in the code by creating an interface and a stub/mock object to run my tests against. I suppose this is possible using this way of doing things. It just seems that

问题 In a C# program I am importing a large text file (300mb) into a MySQL database via the MySqlBulkLoader function of the MySql .Net Connector. The import takes quite a long time and results in almost 100% disk usage on the Windows 2003 Server it is running on. In an attempt to speed up the import the program nows splits the big file into smaller chunks. Would it be possible to read the small file chunk (8mb) into memory (ie array) and then pass it to the MySQLBulkLoader as a file? The bulk

问题 This test is failing : var hashCode = new { CustomerId = 3354, ServiceId = 3, CmsThematicId = (int?)605, StartDate = (DateTime?)new DateTime(2013, 1, 5), EndDate = (DateTime?)new DateTime(2013, 1, 6) }.GetHashCode(); var hashCode2 = new { CustomerId = 1210, ServiceId = 3, CmsThematicId = (int?)591, StartDate = (DateTime?)new DateTime(2013, 3, 31), EndDate = (DateTime?)new DateTime(2013, 4, 1) }.GetHashCode(); Assert.AreNotEqual(hashCode, hashCode2); Can you tell me why ? 回答1: It's kinda