Add url to warning/error tasks and objects

[sanderobdeijn]

I'm making a .props file that reads some properties in a .csproj and then sets other properties and loads some nugetpackages.
I want to add errors or warnings when the properties are empty. So I added a warning tag that looks for a empty property.

Also I would like to add a link to a support page in visual studio. Can an url be added to this attribute.

The 1 code becomes an url in visualstudio but now points to a MDN page.
If I add a HelpKeyword attribute with an url the link in visual studio changes but not to the value of the help keyword.

How does this tag work? Can I set this tag to a specific url in visual studio?

Here is my code:

<Project InitialTargets="ValidateProjectParameters">
    <Target Name="ValidateProjectParameters">
        <Warning Text="The property TestProperty is empty in the projectfile"
                 Condition="'$(TestProperty)' == ''"
                 Code="1"
                 HelpKeyword="http://google.com">
    </Target>
</Project>

[livarcocc]

This might be a better question to dotnet/project-system. I am not sure how VS leverages warnings coming from msbuild.

@davkean any idea?

[sanderobdeijn]

In #3858 I was asked to open a separate issue.
What is the helpkeyword used for? If I do an dotnet build it also isn't returned in the output

[davkean]

HelpKeyword has a different meaning; it means the keyword that we use to look up a help topic in help. If MSBuild added a concept of HelpLink (which is what we call it in the error list), then we can plumb it through in the project system.

[jmezach]

This would be a really useful feature to have in order to document your own set of context specific warnings. Any plans to add this?

[davkean]

I don't believe this is scheduled, but I'm sure that MSBuild will welcome the contribution. After that I can schedule some time on the VS side to make sure this all plumbed through.

[davkean]

This has been merged in: #5488.