Select a folder with EditorUtility.OpenFolderPanel, then get references to all the files therein. How?
Maybe you need this?
foreach (Object o in Selection.GetFiltered(typeof (Object), SelectionMode.DeepAssets))
Actually I’m searching for a another problem which similar to your question, How to get all assets in a path string. But I just find this one.
foreach (var m in AssetDatabase.GetAllAssetPaths()) {
var objs = AssetDatabase.LoadAllAssetsAtPath(m);
}
Intrestingly GetAllAssetPaths is not documented in reference.