删除程序集：AssemblyInfo.cs中的零件

Question

I'm using Rosyln to manipulate the AssemblyInfo.cs as part of a tool I'm making and I'm having trouble figuring out the right way to remove this line from a file:

[assembly: DeploymentLocation("\\\\someserver\\folder")]

I can also have this:

[assembly: DeploymentLocation("\\\\someserver\\folder"), DeploymentLocation("\\\\someotherserver\\folder")]

What I want to do is find those lines, remove them, and recreate them. Recreating them is fine, but removing them is the problem.

I can find those DeploymentLocation pieces like this:

var attr = syntaxRoot.DescendantNodes().OfType<AttributeSyntax>().Where(a => a.Name.ToString() == "DeploymentLocation");

And then I do something like this:

if (attr?.Any() == true)
{
    // remove existing attributes...
    syntaxRoot = syntaxRoot.RemoveNodes(attr, SyntaxRemoveOptions.KeepNoTrivia);
}

But this ends up leaving this in my file:

[assembly: ]

Which is, obviously, not what I want. How do I find the [assembly: ] bit and remove that along with the DeploymentLocation attribute? And obviously I don't want to remove all [assembly: ] lines as there's a bunch of lines that are boilerplate stuff that needs to stay.

The assembly bit doesn't seem to be considered a Parent (the Parent ) of my tags in attr are the whole document. So what do I need to do to walk back to the assembly piece? What is that bit even called?

Answer 1

Ok, I figured this out. You need to select the AttributeListSyntax , which is basically the set of square brackets [] that contains an AttributeSyntax node matching what I want. Then I can remove that whole thing which would include the AttributeTargetSyntax (the assembly: part) which is a sibling to the AttributeSyntax

var attr = syntaxRoot.DescendantNodes().OfType<AttributeListSyntax>()
    .Where(a => a.DescendantNodes().OfType<AttributeSyntax>()
    .Any(s => s.Name.ToString() == "DeploymentLocation"));