dynamic

问题 I am a total newbie in the ipad app development. I am interested in creating an application where i have a popover showing a tableview with list of items. Then i select an item and the view drills to another tableview consisting of another list of items and a navigate back button as well. the level to which i would be drilling down is dynamic. Please guide me with appropriate resources to help me solve the problem. 回答1: I did it before and it works well! Just assign this function to your

问题 I'm reading the book 'C# in Depth, 2nd Edition' of Jon Skeet. He said that we can call extension methods with dynamic arguments using two workarounds, just as dynamic size = 5; var numbers = Enumerable.Range(10, 10); var error = numbers.Take(size); var workaround1 = numbers.Take((int) size); var workaround2 = Enumerable.Take(numbers, size); Then he said "Both approaches will work if you want to call the extension method with the dynamic value as the implicit this value". I don't know how to

问题 How to create dynamic incrementing variable using "for" loop in C#? like this: track_1, track_2, track_3, track_4. so on. 回答1: You can't create dynamically-named variables. All you can do - it to create some collection or array, and operate with it. I think the best class for you is generic List<>: List<String> listWithDynamic = new List<String>(); for (int i = 1; i < limit; i +=1) { listWithDynamic.Add(string.Format("track_{0}", i)); ... } 回答2: Assuming you want strings: for (int i = 1; i <

问题 How to create dynamic incrementing variable using "for" loop in C#? like this: track_1, track_2, track_3, track_4. so on. 回答1: You can't create dynamically-named variables. All you can do - it to create some collection or array, and operate with it. I think the best class for you is generic List<>: List<String> listWithDynamic = new List<String>(); for (int i = 1; i < limit; i +=1) { listWithDynamic.Add(string.Format("track_{0}", i)); ... } 回答2: Assuming you want strings: for (int i = 1; i <

问题 I have 15 stored procedures that return data from a common table and then join that table with a specific table to retrieve inventory. Example: Common: tblCommon Specific: tblSpecific Is there way I can pass the name "tblSpecific" into a single stored procedure as a variable, like the following? SELECT .... FROM tblCommon c INNER JOIN @TABLE s on c.primaryKey = s.foreignKey 回答1: The way you do this is with dynamically generated SQL which is run through the sp_executesql() stored procedure. In

问题 I have a listview in which there should be different divider height between different rows. So, how can we set the divider height dynamically? Suppose, I have 10 rows and there should be a divider height of 5 between first 2 rows and then there should be a divider height of 1 between next 5 rows and so on. Can someone let me know the way of doing this? 回答1: One way would be to make the dividers rows. Set them as not enabled in your isEnabled adapter method. I do that for section headers, but

问题 I have a listview in which there should be different divider height between different rows. So, how can we set the divider height dynamically? Suppose, I have 10 rows and there should be a divider height of 5 between first 2 rows and then there should be a divider height of 1 between next 5 rows and so on. Can someone let me know the way of doing this? 回答1: One way would be to make the dividers rows. Set them as not enabled in your isEnabled adapter method. I do that for section headers, but

问题 I'm trying to create a table with a name based on the current year and month( 2011-09 ), but MySQL doesn't seem to like this. SET @yyyy_mm=Year(NOW())+'-'+Month(NOW()); CREATE TABLE `survey`.`@yyyy_mm` LIKE `survey`.`interim`; SHOW TABLES IN `survey`; +-----------+ | interim | +-----------+ | @yyyy_mm | +-----------+ If I do CREATE TABLE; without the ticks around @yyyy_mm , I get a generic syntax error. @yyyy_mm resolves to 2020 . 回答1: You should be able to do something like this: SET @yyyy

问题 I'm using linq to entities(EF). I have a constructor which takes 4 string parameters. Depending on what parameter is not null I have to build the linq query. I can do with if else statements but i also has other constructor with 10 parameters in that case there will be many combinations to check. Example: Constructor(p1,p2,p3,p4) { var prod= from p in ctxt.products.expand("items\details") where p.x==p1 && p.xx==p2 && p.xxx==p3 && p.xxxx==p4 select p; } In the above where clause there should

问题 I currently have both static and dynamic compression configured. The static compression is working, however the dynamic compression, when checked through YSlow and Fiddler, is not working. In my applicationHost.config, I have the following settings: <urlCompression doStaticCompression="true" doDynamicCompression="true" dynamicCompressionBeforeCache="true" /> <httpCompression directory="%SystemDrive%\inetpub\temp\IIS Temporary Compressed Files" maxDiskSpaceUsage="100" minFileSizeForComp="256">