Azure build task - build only one project from all solution - azure

Question

i have an issue with azure task in ci/cd,
each release have an tests task that run before code deployed, and each time all solution build and it's take time.
i want that only specific project that related to the release will build and not all the solution.
how can i fix it?

Answer 1

According to your SO tags, it seems that you're using C#.
To build one specific project that targets .net framework in build task:
You should use MSBuild task instead of Visual Studio Build task.
To build one specific project that targets .net core/standard in build task:
You should use Dotnet build with this kind of input:
Also if you're using Dotnet test in release task, it will automatically build the projects to test unless you add the --no-build switch. So you also need to make sure you're specifying specific project to test instead of using **/*.csproj.

Answer 2

trigger:
branches:
include:
- master
pool:
name: Azure Pipelines
vmImage: 'windows-2019'
demands:
- msbuild
- visualstudio
variables:
BuildConfiguration: "Release"
platform: any cpu
BuildPlatform: any cpu
name: 1.$(build.buildid)
stages:
- stage: Build
jobs:
- job: Build
steps:
- task: NuGetToolInstaller#0
displayName: 'Use NuGet 4.4.1'
inputs:
versionSpec: 4.4.1
- task: NuGetCommand#2
displayName: 'NuGet restore'
inputs:
restoreSolution: 'path to sln file/xxxxxxx.sln'
vstsFeed: 'xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx'
- task: VSBuild#1
displayName: 'Build solution'
inputs:
solution: 'path to sln file/xxxxxxx.sln'
platform: '$(BuildPlatform)'
configuration: '$(BuildConfiguration)'
clean: true
Also, check-in Pipeline at the initial step if the respective sln file is selected