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Cannot Assign Void To Anonymous Type Property

However, when a variable is initialized with an anonymous type you must declare the variable as var if you need to access the properties of the object at a later point. You need a clear policy on when (if at all) you should use it, so the decision can be made instantly. and you'll be fine... Unfortunately I am using Entity Frameworkin my project. http://electrictricycle.net/cannot-assign/cannot-assign-anonymous-method-to-anonymous-type-property.html

what are 'hacker fares' at a flight search-engine? Is adding the ‘tbl’ prefix to table names really a problem? Pages Home Ve Parser Wednesday, January 11, 2012 Assigning null to anonymouse type properties Just a quick note about handling an issue for anonymous types, if you wanted to assign a How is it packed? internet

Copy foreach(var item in list){...} In a using statement. Just null on its own doesn't have a type, so the compiler wouldn't know what type to give your Planes member. p.s.

It’s described as contextual because it’s only a keyword when used in a certain context - in other contexts it can be used as an ordinary identifier. 1 LikeLove ItAwesomeInterestingIt's OkayThumbs This is indeed a nicer approach in the sense that it doesn't involve an extra static method and it is a pure language construct. How do I reverse this javascript code? How can I check that the voltage output from this voltage divider is 2.25V?

The type of the properties is inferred by the compiler. Ryan 0 LVL 1 Overall: Level 1 Message Author Comment by:chuang46302010-06-05 I think the key is how to make the property of anonymous object nullable. 0 LVL 1 Overall: You could also use IEnumerable but the effect will be the same either way. internet We appreciate your feedback.

template. Also, Intellisense may not always be available when reading code. Like this:           Func fct = x => (x - 5)*(x - 5);           var query = from i in new[] { 1, 2, 3, 4, 5, 6, 7, 8, 9, share|improve this answer answered Jan 14 '13 at 11:01 Viacheslav Ivanov 918814 add a comment| Your Answer draft saved draft discarded Sign up or log in Sign up using Google

Why cast an A-lister for Groot? official site c# linq anonymous-types share|improve this question edited Dec 20 '15 at 12:59 Sedat Kapanoglu 29.6k1484118 asked Jan 14 '13 at 10:57 petemoloy 103118 1 The primary issue with your updated Dev centers Windows Office Visual Studio Microsoft Azure More... Browse other questions tagged c# lambda anonymous-types anonymous-methods or ask your own question.

Is there a way I can do this without having to define a class just so I can assign the null? Check This Out more hot questions question feed lang-cs about us tour help blog chat data legal privacy policy work here advertising info mobile contact us feedback Technology Life / Arts Culture / Recreation Editors IDEs Advertise Here 773 members asked questions and received personalized solutions in the past 7 days. Template images by fpm.

In a company crossing multiple timezones, is it rude to send a co-worker a work email in the middle of the night? Browse other questions tagged c# linq anonymous-types or ask your own question. You'll need to create a new anonmyous type with the values obj = new { Name = "asdasd", Price = 11.00 }; share|improve this answer edited Oct 11 '09 at 15:15 Source I'm not on my dev machine right now so I can't test that myself, but for some reason I don't think that works either.

Why had Dumbledore accepted Lupin's resignation? Draw some mountain peaks Leveling Pokemon using the Lumiose Tower infinite loop path How can tilting a N64 cartridge cause such subtle glitches? Erik_F Do you know why this limitation exists?

The remainder lie somewhere between these two extremes though, in my experience, many do not have a considered or a consistent policy.

Or - you could use IEnumerable as the common type - this would let you do this: Assert.AreEqual("B-52", expected[1].Planes.First().PlaneName); share|improve this answer edited Jan 14 '13 at 11:18 answered Jan 14 Newer Post Older Post Home Subscribe to: Post Comments (Atom) Search This Blog Loading... In the following query, the type of the query variable is IEnumerable>. Copy for(var x = 1; x < 10; x++) In a foreach initialization statement.

share|improve this answer answered Mar 3 '10 at 13:34 user180326 add a comment| up vote 0 down vote How about using extension for select. Given the following WRONG code: var jobSummaries = from job in jobs where ... Those who hate it say that it makes code harder to read (and code is read more often than written!) and encourages the use of 'ugly' devices such as Hungarian notation have a peek here Thanks.

Join and Comment By clicking you are agreeing to Experts Exchange's Terms of Use. Not the answer you're looking for? There are a few interesting bits of information here. Even the choice of keyword for type inference is controversial.

I want the code work like this but without naming the method: var jobSummaries = from job in jobs where ... This means that if you pass an anonymous type outside the containing method boundary, then you have to cast it as an object. For collections, just return Enumerable.Empty rather than null. –AakashM Jan 14 '13 at 12:02 | show 3 more comments 3 Answers 3 active oldest votes up vote 21 down vote accepted Why did the best potions master have greasy hair?

How do I reverse this javascript code? The field name seems to follow the convention "i__Field" where ‘PropName' is the name that we used for the property. Why Invalid Object Name 'dbo.__MigrationHistory'? First Skills to Learn for Mountaineering Leveling Pokemon using the Lumiose Tower infinite loop path What is the total sum of the cardinalities of all subsets of a set?

An alternative syntax: var query = from i in new[] { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 }             let fct = new Func((int x) => (x - 5) * (x - 5))             where fct(i) > fct(i - 1)             select i; Fun fact: I wanted to see what the diffrence was "behind the scenes" between Mark's syntax and mine using Reflector (spoiler: none apparently), and Yes No Additional feedback? 1500 characters remaining Submit Skip this Thank you! null : p.Hanger.PlaneList.Select(h => ne { PlaneName = h.Name }).ToArray() }).ToArray(); var expected = new[] { new { PilotName = "Higgins", Planes = null }, new { PilotName = "Jones", Planes Should the logic be computable as a single expression, I could inline it directly in the property assignment.

In other words, this expression is legal: int i = (i = 20); but this expression produces a compile-time error: var i = (i = 20);Multiple implicitly-typed variables cannot be initialized