using System.Collections;
using System.Globalization;
using System.Resources;

...

ResourceSet resourceSet = MyResourceClass.ResourceManager.GetResourceSet(CultureInfo.CurrentUICulture, true, true);
foreach (DictionaryEntry entry in resourceSet)
{
    string resourceKey = entry.Key.ToString();
    object resource = entry.Value;
}

var assembly = Assembly.GetExecutingAssembly();

foreach (var resourceName in assembly.GetManifestResourceNames())
    System.Console.WriteLine(resourceName);

foreach (var resourceName in assembly.GetManifestResourceNames())
{
    using(var stream = assembly.GetManifestResourceStream(resourceName))
    {
        // Do something with stream
    }
}

ResXResourceReader rsxr = new ResXResourceReader("your resource file path");

// Iterate through the resources and display the contents to the console.
foreach (DictionaryEntry d in rsxr)
{
    Console.WriteLine(d.Key.ToString() + ":t" + d.Value.ToString());
}

// Create a ResXResourceReader for the file items.resx.
  ResXResourceReader rsxr = new ResXResourceReader("items.resx");

  // Create an IDictionaryEnumerator to iterate through the resources.
  IDictionaryEnumerator id = rsxr.GetEnumerator();

  // Iterate through the resources and display the contents to the console.
  foreach (DictionaryEntry d in rsxr)
  {
Console.WriteLine(d.Key.ToString() + ":t" + d.Value.ToString());
  }

 //Close the reader.
 rsxr.Close();

Type resourceType = Type.GetType("AssemblyName.Resource1");
PropertyInfo[] resourceProps = resourceType.GetProperties(
    BindingFlags.NonPublic |
    BindingFlags.Static |
    BindingFlags.GetProperty);

foreach (PropertyInfo info in resourceProps)
{
    string name = info.Name;
    object value = info.GetValue(null, null);  // object can be an image, a string whatever
    // do something with name and value
}

XDocument
        .Load(resxFileName)
        .Descendants()
        .Where(_ => _.Name == "data")
        .Select(_ => $"{ _.Attributes().First(a => a.Name == "name").Value} - {_.Value}");

ResourceSet resourceSet =
Resources.ResourceManager.GetResourceSet(CultureInfo.CurrentUICulture, true, true);
foreach (var entry in resourceSet.OfType<DictionaryEntry>().Select((item, i) => new { Index = i, Key = item.Key, Value = item.Value }))
{
    Console.WriteLine(@"[{0}] {1}", entry.Index, entry.Key);
}