linqpad

I want to create a JSON file for use as part of a simple web prototyping exercise. LinqPAD is perfect for accessing the data from my DB in just the shape I need, however I cannot get it out as JSON very easily. I don't really care what the schema is, because I can adapt my JavaScript to work with whatever is returned. Is this possible? A more fluent solution is to add the following methods to the "My Extensions" File in Linqpad: public static String DumpJson<T>(this T obj) { return obj .ToJson() .Dump(); } public static String ToJson<T>(this T obj) { return new System.Web.Script.Serialization

I've been experimenting with queries in LinqPad. We have a table Lot with a column Side char(1) . When I write a linq to sql query Lots.Where(l => l.Side == 'A') , it produces the following SQL -- Region Parameters DECLARE @p0 Int = 65 -- EndRegion SELECT ..., [t0].[Side], ... FROM [Lot] AS [t0] WHERE UNICODE([t0].[Side]) = @p0 However, using Lots.Where(l => l.Side.Equals('A')) , it produces -- Region Parameters DECLARE @p0 Char(1) = 'A' -- EndRegion SELECT ..., [t0].[Side], ... FROM [Lot] AS [t0] WHERE [t0].[Side] = @p0 It would appear upon (albeit naïve) inspection, that the latter would be

Is there a posibility to add a reference to an assembly in LINQPad? I have some types in my assembly and I would like to use them in my LINQPad queries. Just press F4 . This will pop up the Add Reference dialog. You can also use the menu option to access the popup window to add references. Notice the >> arrows in menu bar. Click on it. Go to Query menu. Find References and Properties . Click on it. Following is example image from LINQPad 5: thedanotto I had to do fn and F4 at the same time. 来源： https://stackoverflow.com/questions/11432642/how-to-add-a-reference-to-an-assembly-in-linqpad-to

In this related question , I noted that Visual Studio's debugger is able to enumerate the properties of System.__ComObject references, which is "a hidden type used when the wrapper type is ambiguous" -- e.g., the type of object you get when you obtain it from another COM object and don't instantiate it yourself: Additionally, if you simply write a COM object's identifier into the Immediate Window, its properties and values are similarly dumped: Note that this is separate from VS2010's " Dynamic View ", which I believe uses IDispatch and COM reflection to enumerate the properties of COM objects

Maybe I'm crazy, but I thought this was a valid cast: (new int[]{1,2,3,4,5}).Cast<double>() Why is LinqPad throwing a InvalidCastException: Specified cast is not valid. ? C# allows a conversion from int directly to double , but not from int to object to double . int i = 1; object o = i; double d1 = (double)i; // okay double d2 = (double)o; // error The Enumerable.Cast extension method behaves like the latter. It does not convert values to a different type, it asserts that values are already of the expected type and throws an exception if they aren't. You could try (new int[]{1,2,3,4,5}).Select

I want to do something like this: from a in stuff let counter = 0 select new { count = counter++, a.Name }; But I get a error telling me that counter is read only. Is there a way to do something similar to this, without declaring a variable outside of the query? Basically, I just want to show a count/index column in LINQPad (which is awesome, BTW), which means I can't declare counter ahead of time. Rather than using side-effects, use the overload of Select which takes an index: stuff.Select((value, index) => new { index, value.Name }); You could do it using side-effects, but not in the way you

I just started using LINQPad and all works great when connecting to my SQL Server DB, but now I'm trying to set up a second connection to my Oracle DB and I'm getting stuck as to how to do it. I downloaded the IQ driver (v 2.0.8.0 - Latest) and when I go to add a new connection, I select Oracle as my DB Provider and don't know how to do the rest based upon my usual connection string looking as follows: Data Source=(DESCRIPTION =(ADDRESS = (PROTOCOL = TCP)(HOST = [IP Address])(PORT = [Port]))(CONNECT_DATA = (SERVER = DEDICATED)(SERVICE_NAME = [Service Name])));User Id=[name];Password=[password]