paging

问题 I would like to return the total number of records in the database so I can set up pagination. How do I return the total number of records in the DB when using the following paging method in SQL Server 2008? ALTER PROCEDURE [dbo].[Nop_LoadAllOptimized] ( @PageSize int = 20, @PageNumber int = 1, @WarehouseCombinationID int = 1, @CategoryId int = 58, @OrderBy int = 0, @TotalRecords int = null OUTPUT ) AS BEGIN WITH Paging AS ( SELECT rn = (ROW_NUMBER() OVER ( ORDER BY CASE WHEN @OrderBy = 0 AND

问题 When using -Xmx flag, what happens if the argument given exceed physical memory? Also is there any way to explicitly make JVM to use a specific amount of memory using paging? 回答1: See for yourself: JVM fails in getting enough memory for the heap and exits. I don't think there is a way to make JVM use a specific amount of memory for paging, but you can use: -XX:+|-UseLargePages --for large page support and -XXLargePageSizeInBytes=<n> --for specifying how large your large pages can be. Look at

问题 When using -Xmx flag, what happens if the argument given exceed physical memory? Also is there any way to explicitly make JVM to use a specific amount of memory using paging? 回答1: See for yourself: JVM fails in getting enough memory for the heap and exits. I don't think there is a way to make JVM use a specific amount of memory for paging, but you can use: -XX:+|-UseLargePages --for large page support and -XXLargePageSizeInBytes=<n> --for specifying how large your large pages can be. Look at

问题 I'm trying to achieve pagination of the posts i get from a RSS-feed using the System.ServiceModel.Syndication . However I cant figure out how to do this and what the best way to do it is. As of now i use a Listview to present the data that is fetched by this in my code-behind: // Link to the RSS-feed. string rssUri = "feed.xml"; var doc = System.Xml.Linq.XDocument.Load(rssUri); // Using LINQ to loop out all posts containing the information i want. var rssFeed = from el in doc.Elements("rss")

问题 Does a program always use logical address in a continuous manner? Is it possible that a program does not use 0-200 logical addresses and instead use random addresses? I am asking this because while I was reading about memory management in Operating system concepts by Galvin, the author mentioned that the page table stores an entry for each page no matter whether the page is valid or invalid. If the pages were used continuously then we would not need to store all entries. 回答1: The validate

问题 I have a table with more the fifty records in it. I want to display them in pages of five records per page. My current approach uses jquery datatables, as shown below. $(document).ready(function () { var length = $('#data-datatable tbody tr').length; $('#data-datatable').dataTable({ "bFilter": false, "bLengthChange": false, "iTotalDisplayRecords" : 5, "iTotalRecords": length }); }); This shows all fifty records in one page! How can I get the display I want please? 回答1: My assumptions with

问题 This question was asked to one of seniors in a programming interview. According to me, because the sizes of memory accessed by softwares are increasing, the memory may soon be exhausted. So in this case if we used swapping, it would be inefficient. So we would go for virtual memory because it maps the memory in the disk to the main memory. But if we can have very huge memory then would virtual memory be of use? And please tell if the above answer needs some modifications. 回答1: Virtual memory

问题 I'm using datalist in my application and i'm binding datalist with lisq to sql dim db=new linqdatacontext(); var products=from p in db.products select p; datalist.datasource=products; datalist.databind(); now how can i do paging in my datalist? 回答1: Use keywords Take and Skip var products=from p in db.products select p Skip NUMER_TO_START Take NUMBER_TO_TAKE Very simple, consider there are 1000 rows of results in p, and Skip 50 means you are not going take results #1-#50, and it will give you

问题 Lets say I have a domain model with a class called Blog that has a property called BlogEntries (that contains objects of type BlogEntry). If I have a database model with two tables "Blog" and "BlogEntry", it's not impossible that I have 1000 blog entries for a blog. If I were to show the blog on a web site, I would only want to display maybe 20 blog entries at a time, so I would have to use some sort of paging. I obviously don't want 1000 records to be fetched from the DB all the time. How

问题 I'm very new Kendo UI Grid,so please excuse me if it's dumb question. I'm trying to implement basic Kendo UI Grid in asp.net with paging functionality. But I'm getting error in kendo.web.min.js. Unhandled exception at line 13, column 15140 in http://localhost:63987/Scripts/kendo/2014.1.318/kendo.web.min.js 0x800a01b6 - Microsoft JScript runtime error: Object doesn't support property or method 'slice'. This is line n._pristineData=e.slice(0) , here 'e' is object with 'Count' and 'Data'