CODEWITHSUNDEEP
c#msbuild
Jonesome Reinstate Monica
Jonesome Reinstate Monica

Reputation: 6934

Null-conditional Operators fail to compile in MSBUILD

We have VS 2015 update 2, and find that the following syntax compiles fine within VS, but fails when using MSBUILD to compile:

As described here: https://msdn.microsoft.com/en-us/library/dn986595.aspx

This syntax fails:

int? length = customers?.Length;

The system having this problem has VS 2015 update 2, and .NET 4.6.1 installed. We only have the issue when building from MSBUILD (which is what the build system uses...). Here is the console output showing how we run msbuild:

Executing external process: C:\WINDOWS\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
Parameters: C:\develop\<our app>\msbuild_project.xml /p:DefineConstants="Compiled_for_Windows_Service_Case_12345" /m
Output from C:\WINDOWS\Microsoft.NET\Framework\v4.0.30319\MSBuild.exe
Microsoft (R) Build Engine version 4.6.1038.0
[Microsoft .NET Framework, version 4.0.30319.42000]
Copyright (C) Microsoft Corporation. All rights reserved.

Upvotes: 0

Views: 2460

Answers (1)

Jacob
Jacob

Reputation: 746

You need to use a later version of MSBuild.exe. For an example, see:

How to build .NET 4.6 Framework app without Visual Studio installed?

C:\Program Files (x86)\MSBuild\14.0\Bin\MsBuild.exe MySolution.sln

Upvotes: 1

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