Question

The following code for a co-worker throws the following error when he tries to compile it using VS 2008:

Error:

A new expression requires () or [] after type

Code:

MyClass Structure:

public class MyClass {     public MyClass() {}      public string Property1 { get; set; }     public string Property2 { get; set; } } 

Sample Source Code:

List<MyClass> x = new List<MyClass>();  x.Add(new MyClass  {     Property1 = 'MyValue',     Property2 = 'Another Value' }); 

It ‘works on my machine’, but not his. Any idea why?

UPDATE
He is targeting the 3.5 .NET framework
He is using the System.Collections.Generics namespace
The MyClass object does have a constructor

UPDATE 1:
@Funky81 – Your example and my example were able to compile on my PC.

Update 2:
Included schema of MyClass in sample

UPDATE 3:
@DK – I had my co-worker add the following configuration section to his application:

<system.codedom>         <compilers>             <compiler language='c#;cs;csharp' extension='.cs' warningLevel='4' type='Microsoft.CSharp.CSharpCodeProvider, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'>                 <providerOption name='CompilerVersion' value='v3.5'/>                 <providerOption name='WarnAsError' value='false'/>             </compiler>             <compiler language='vb;vbs;visualbasic;vbscript' extension='.vb' warningLevel='4' type='Microsoft.VisualBasic.VBCodeProvider, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'>                 <providerOption name='CompilerVersion' value='v3.5'/>                 <providerOption name='OptionInfer' value='true'/>                 <providerOption name='WarnAsError' value='false'/>             </compiler>         </compilers>     </system.codedom> 

And he received the following compilation error: Unrecognized element ‘providerOption’.

Answer 1

Here’s what seems to be the only similar, but not exactly the same, error available in VS.2008:

Compiler Error CS1526 : A new expression requires (), [], or {} after type

Note those {} in error message, which are part of c# 3.0 syntax. This is not related to framework version, but to the version of the language.

My bet is that somehow a different version of compiler was used.

Added: this looks like a likely issue with ASP.Net. Place to check is in .config file(s), element

configuration\system.codedom\compilers\compiler @language='c#...' 

there should be

<providerOption name='CompilerVersion' value='v3.5'/>