diff --git a/csharp/Lib/Utils/EnumerableUtils.cs b/csharp/Lib/Utils/EnumerableUtils.cs
index af9cc1998..609258c37 100644
--- a/csharp/Lib/Utils/EnumerableUtils.cs
+++ b/csharp/Lib/Utils/EnumerableUtils.cs
@@ -68,7 +68,23 @@ public static class EnumerableUtils
     // }
 
 
+    public static Queue<T> ToQueue<T>(this IEnumerable<T> ts)
+    {
+        var q = new Queue<T>();
+        foreach (var t in ts)
+            q.Enqueue(t);
 
+        return q;
+    }
+    
+    public static Stack<T> ToStack<T>(this IEnumerable<T> ts)
+    {
+        var s = new Stack<T>();
+        foreach (var t in ts)
+            s.Push(t);
+
+        return s;
+    }
 
     public static async IAsyncEnumerable<R>
         SelectManyAsync<T, R>(this IEnumerable<T> ts, Func<T, Task<IEnumerable<R>>> func)