Update azure-pipelines.yml for Azure Pipelines

azure-pipelines.yml

@@ -4,7 +4,9 @@
 # https://docs.microsoft.com/azure/devops/pipelines/apps/windows/dot-net
 
 trigger:
-- master
+  branches:
+    include:
+      - refs/tags/*
 
 pool:
   vmImage: 'windows-latest'
@@ -18,6 +20,16 @@ variables:
  
 
 steps:
+- powershell: | 
+    $tags = git tag --sort=-creatordate
+    $tag = $tags[0]
+
+#update build number
+- bash: |
+    echo "##vso[build.updatebuildnumber]Release $(tag)"
+    condition: eq(variables['release.enabled'], 'true')
+    name: SetReleaseBuildName
+
 - task: NuGetToolInstaller@1
 
 - task: NuGetCommand@2