How to achieve the effect of ilspycmd programmatically?

[Smartisa]

How should I call ICSharpCode.Decompiler to achieve the effect of this statement?
./ilspycmd.exe ./target.dll -p -o ./targetProject

[siegfriedpammer]

This is how ilspycmd does it:

ILSpy/ICSharpCode.ILSpyCmd/IlspyCmdProgram.cs

Lines 277 to 288 in 42668e8

	ProjectId DecompileAsProject(string assemblyFileName, string projectFileName)
	{
	var module = new PEFile(assemblyFileName);
	var resolver = new UniversalAssemblyResolver(assemblyFileName, false, module.Metadata.DetectTargetFrameworkId());
	foreach (var path in ReferencePaths)
	{
	resolver.AddSearchDirectory(path);
	}
	var decompiler = new WholeProjectDecompiler(GetSettings(module), resolver, resolver, TryLoadPDB(module));
	using (var projectFileWriter = new StreamWriter(File.OpenWrite(projectFileName)))
	return decompiler.DecompileProject(module, Path.GetDirectoryName(projectFileName), projectFileWriter);
	}