I added three images to a file called Resource1.resx. I also added one string just for test purposes. I\'m getting this error on either the GetString or the GetObject(image
I also had the same problem. adding "DefaultNameSpace." ("BusinessLogic" is the default namespace in my case) before resourcefileName in following line resolved my problem
public static ResourceManager rm = new ResourceManager(string.Concat("BusinessLogic." , Constants.Common.ResourceFileName), Assembly.GetExecutingAssembly());