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Cannot Assign Null To Anonymous Type Property

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 Does The Amazing Lightspeed Horse work, RAW? Tim - Monday, October 8, 2007 6:56:51 AM >> Hi, >> Any chance of seeing something like this for VB? >> Regards >> Jeremy That is the one more disadvantage why In a company crossing multiple timezones, is it rude to send a co-worker a work email in the middle of the night? http://electrictricycle.net/cannot-assign/cannot-assign-anonymous-method-to-anonymous-type-property.html

Keep up the great work.--------------------------------------------------Portugal Mortgage BrokerReplyDeleteAdd commentLoad more... So how do you get null typed as array of an anonymous type? That is an amazing trick to use it with LINQ. It works exactly like C# one.

You are casting to a nullable type when the value assigned to YearsAtCompany will never be null. YearsAtCompany = (int)(c.Element("YearsAtCompany") ?? 0) -Andy Andrew Robinson - Thursday, September 20, 2007 11:54:06 AM Earlier this week I started adding the ?? We could check whether message was null, and return an alternate value using the code below: Because the "message" variable above wasn't null, the "result"variableis assigned the original "hello world" message It is key to remember that all of those factors (number, names, types, order of properties) determine the anonymous type.  This is important, because while these two instances share the same

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 Note also that this version is not needed, (dirRecord[3] == null) ? Proudly powered by WordPress. I am definitelly all about writing more clear code and with the ??

The weak implementation IIF, does not work properly in some cases. Now, we can look at our results: 1: foreach (var group in byUserAndDay) 2: { 3: // the group’s Key is an instance of our anonymous type 4: Console.WriteLine("{0} on {1:MM/dd/yyyy} The content you requested has been removed. http://stackoverflow.com/questions/4774265/set-anonymous-type-to-null I have included the TSQL script, XAML and C# cod...

Bas Geertsema You could just define a variable for the function. Why had Dumbledore accepted Lupin's resignation? It's a very useful opertor nonetheless, and it's good to make a refresher for those who missed it ! C# Copy var anonArray = new[] { new { name = "apple", diam = 4 }, new { name = "grape", diam = 1 }}; RemarksAnonymous types are class types that

Covered by US Patent. https://www.experts-exchange.com/questions/26238572/How-to-handle-NULL-value-in-LINQ.html Blog Archive ▼ 2012 (14) ► December (2) ► November (3) ► August (1) ► April (1) ► March (4) ► February (1) ▼ January (2) Using third party web services Thus, if we have the following anonymous type instance: 1: var point = new { X = 13, Y = 42 }; We can get the properties as you’d expect: 1: Restart/Shutdown the Laptop 2.

In that case , what is the problem with (int)e.Element("YearsAtCompany") ?? 0 Mehfuz - Friday, September 21, 2007 4:07:45 AM thanks for the post. this contact form If the value provided on theleft side of the expressionisn't null, then it returns the original value. This bit me not long ago; I was hoping for anonymous types as a syntax feature to win the day but it didn't work. :) 6/27/2012 3:28 AM | Jon Davis The type name is generated by the compiler and is not available at the source code level.

It is an ending to lots of problems you will face in managing your web application scripts and style she... However, there is a way to get a null reference in a variable of anonymous type. Godspeed! :) View my complete profile Labels ADO.NET Ajax Ajax Control Toolkit AngularJS AnimationExtender ASP.NET ASP.NET Membership ASP.NET MVC AutocompleteExtender Automapper BindingSource Blog Customization Bootstrap Bootstrap DatePicker Bootstrap Typeahead.js C# Castle http://electrictricycle.net/cannot-assign/cannot-assign-void-to-anonymous-type-property.html This will make my code so much more cleaner, thanks!

operator support. This piece of code cannot compile (even R# doesn't detect any error) : using System; using System.Linq; class Program {    static void Main(string[] args) {       var query = from i in new[] { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 }                   let fct = (int x) => (x - 5) * (x - 5)                   where fct(i) > fct(i - 1)                   select i;       foreach (var i in query) { Console.WriteLine(i); }    } } The C# compiler error, provoked by fct, posts - 164 , comments - 1412 , trackbacks - 0 My Links Home Contact Login News Welcome to my blog!

The C# spec states that anonymous types are only guaranteed to unify within a single compilation. –Eric Lippert Jan 23 '11 at 17:06 Yes, that's what I meant.

send more please. This can be achieved by ... Mun - Friday, September 21, 2007 7:08:44 PM Personally, I don't use ?? My code example is somewhat a hack for intellisense inside Visual Studio.

The 10'000 year skyscraper Storage of a material that passes through non-living matter How can I check that the voltage output from this voltage divider is 2.25V? Al Pascual - Thursday, September 20, 2007 3:08:59 PM Holy Cow, That's a pretty cool shortcut, now more extra typing for checking null. This provides a nice, terse way to check whether a value is null, and if so return an alternate value. Check This Out I knew about this technique before, it's just that I didn't know how official it was. +1 for it. –Jordao Jan 23 '11 at 17:12 @Jordao: See section

How to deal with a coworker that writes software to give him job security instead of solving problems? C# Copy var productQuery = from prod in products select new { prod.Color, prod.Price }; foreach (var v in productQuery) { Console.WriteLine("Color={0}, Price={1}", v.Color, v.Price); } Typically, when you use an So you can't use ?? Bookmark the permalink.

Thanks, Scott ScottGu - Tuesday, September 25, 2007 7:35:41 AM Hi Scott, Its very nice post, but I will like to point it out that mistakenly your are leaking few imoprtant The compiler provides a name for each anonymous type, although your application cannot access it. You can use products ?? Trying to replace the lambda by an anonymous method didn't help, the same error kept popping.

Thanks for the great trick. 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 That is why I just did: YearsAtCompany = (int?) c.Element("YearsAtCompany") ?? 0 Which I think is simpler. You’ll be auto redirected in 1 second.

After mulling over a bit I found the following workaround: using System; using System.Linq; class Program {    static void Main(string[] args) {       var query = from i in new[] { 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 }                   let fct = Function((int x) => (x - 5) * (x - 5))                   where fct(i) > fct(i - 1)                   select i;       foreach (var i in query) { Console.WriteLine(i); }    }    static Func Function(Func f) {       return f;    } } I am not sure it is the