linqpad

问题 Here is the code snippet from my LinqPad: public class Elephant{ public int Size; public Elephant() { Size = 1; } } public struct Ant{ public int Size; } private T[] Transform2AnotherType<T>(Elephant[] elephantList) where T:new() { dynamic tArray = new T[elephantList.Length]; for (int i = 0; i < elephantList.Length; i++) { tArray[i] = new T(); tArray[i].Size = 100; //tArray[i].Dump(); } return tArray; } void Main() { var elephantList = new Elephant[2]; var elephant1 = new Elephant(); var

问题 I have already watched this solution but still, my question is same. I am unable to convert my MySQL query to LINQ . I am using LinqPad for it. I have created a connection. Executed my query and got the result. But the lambda section is empty. SELECT * FROM ( SELECT @row := @row +1 AS rownum, zdjh,sjsj ,xhqd FROM ( SELECT @row :=0) r, `tj_xhqd` ORDER BY sjsj ) ranked WHERE rownum % 24= 0 AND zdjh = '002999001180' AND sjsj>='2018-02-24 08:38:11' I want to convert this to LINQ . The model name

问题 I just asked another question here and the answer was spot on. But that addressed what was essentially a syntax problem. Now I need help with an actual resolution. This is the same code from the previou question (fixed up and with stuff added). XElement FILE1 = XElement.Load (@"..\FILE1.XML"); XElement FILE2 = XElement.Load (@"..\FILE2.XML"); var orders = from file1 in FILE1.Descendants("Players").Elements("Player") select new { name=new { clientID=ulm.Element("ClientID").Value, firstName

问题 When I create C# Programs in LinqPad, I would like to see the warnings from the compiler. It already shows error messages. How can I see the warnings? 回答1: LINQPAD is not a full blown IDE to support everything.. it's an ergonomic C#/VB scratchpad that instantly executes any C#/VB expression, statement block or program.. so simply this feature is not supported as of now. 来源： https://stackoverflow.com/questions/4951069/how-can-i-see-warnings-in-linqpad

问题 When I create C# Programs in LinqPad, I would like to see the warnings from the compiler. It already shows error messages. How can I see the warnings? 回答1: LINQPAD is not a full blown IDE to support everything.. it's an ergonomic C#/VB scratchpad that instantly executes any C#/VB expression, statement block or program.. so simply this feature is not supported as of now. 来源： https://stackoverflow.com/questions/4951069/how-can-i-see-warnings-in-linqpad

问题 This question already has answers here : How do I use the LINQPad Dump() extension method in Visual Studio? [closed] (4 answers) Closed 5 years ago . Given (new [] {"a", "b"}).Dump() , LinqPad provides some very useful print results. It seems that this extension method is a short hand for Console.WriteLine . Question > how to implement this dump for myself? 回答1: This thread might be of use to you. Is there a library that provides a formatted Dump( ) function like LinqPad? 回答2: With a lot of

问题 I am executing the "same" query using LINQ to SQL and in LINQPad, however the result set comes out slightly differently. The code is var conn = new SqliteConnection ( "DbLinqProvider=Sqlite;" + "Data Source=/home/larsenma/database.golden" ); Models.Main db = new Models.Main (conn); var runSum = from rr in db.Runrecords group rr by rr.RunID into rg select new { LaneCount = rg.Count(), } LINQPad properly calculates the "LaneCount" while with LINQ to SQL I get 1s for each record. With LINQ to

问题 Last update After alot of testing, I realised that if i ran the same query over the same dataset (in this case a Northwind) table on SQL 2000 and SQL 2005, I get two different results. On SQL 2000, i get the error that's in the question. On SQL 2005, it succeeds. So I've concluded that the query generated by linqpad doesn't work on sql 2000. To reproduce this, run: OrderDetails .GroupBy(x=>x.ProductID) .Select(x=>new {product_id = x.Key, max_quantity = x.OrderByDescending(y=>y.UnitPrice)

问题 Linqpad's souped-up Console.WriteLine is awesome. However, how can I do a standard Console.WriteLine of an object? 回答1: Debug.WriteLine will also do the trick. 回答2: Huh, obvious now - put in an explicit ToString Console.WriteLine(x.ToString()); 回答3: You can also add these methods to your "MyExtensions" file in the "My Queries" pane. This way you can use .DumpToString instead of .Dump. Maybe they should be renamed DumpDebug ... // Write custom extension methods here. They will be available to

问题 Can LinqPad query from a loose mdf file? How would it happen? (Joe Albahari, are you out there?) 回答1: Yes. Choose Linq to SQL. Then there's Attach Database File. 来源： https://stackoverflow.com/questions/4824005/can-linqpad-connect-to-an-mdf-file