Code Analysis ReferenceAnalyzersRCS1267On this pageRCS1267: Use string interpolation instead of 'string.Concat'PropertiesPropertyValueDefault SeverityInfoMinimum language version-ExamplesExample #1diagnostic.csvar s = string.Concat("Id: ", id, ", Value: ", value);fix.csvar s = $"Id: {id}, Value: {value}";Applies toExtension for VS 2022Extension for VS CodeExtension for Open VSXPackage Roslynator.Analyzers