On this page of ReSharper options, you can specify files and code regions containing automatically generated code. For these items, ReSharper runs only those code inspections that check code for compiler errors and warnings. Some file masks and regions, which are typically used for generated code, for example *.designer.cs are included in this list by default, but you can change the default settings if necessary.
You can use the following wildcards in file masks:
?to match one character
*to match one or more characters
**to match files and folders recursively