diff --git a/mpir.net/mpir.net-tests/HugeIntTests/Assignment.cs b/mpir.net/mpir.net-tests/HugeIntTests/Assignment.cs
index cbbc8bf1..11ed394e 100644
--- a/mpir.net/mpir.net-tests/HugeIntTests/Assignment.cs
+++ b/mpir.net/mpir.net-tests/HugeIntTests/Assignment.cs
@@ -36,6 +36,17 @@ namespace MPIR.Tests.HugeIntTests
             }
         }
 
+        [TestMethod]
+        public void IntAssignRational()
+        {
+            using (var a = new HugeRational("222509832503450298345029835740293845720/7"))
+            using (var b = new HugeInt())
+            {
+                b.SetTo(a);
+                Assert.AreEqual("31787118929064328335004262248613406531", b.ToString());
+            }
+        }
+
         [TestMethod]
         public void IntSwap()
         {
diff --git a/mpir.net/mpir.net/HugeInt.h b/mpir.net/mpir.net/HugeInt.h
index 8a0ff824..5e794573 100644
--- a/mpir.net/mpir.net/HugeInt.h
+++ b/mpir.net/mpir.net/HugeInt.h
@@ -48,6 +48,7 @@ using namespace System::Runtime::InteropServices;
 namespace MPIR
 {
     ref class MpirRandom;
+    ref class RationalExpression;
     ref class MPTYPE;
     ref class MPEXPR(Divide);
     ref class MPEXPR(DivideUi);
@@ -1622,6 +1623,13 @@ namespace MPIR
             /// For bases 37 to 62, upper-case letter represent the usual 10..35 while lower-case letter represent 36..61.</param>
             void SetTo(String^ value, int base);
 
+            /// <summary>
+            /// Sets the value of the integer object.  Any fractional portion is truncated.
+            /// <para>Do not change the value of an object while it is contained in a hash table, because that changes its hash code.
+            /// </para></summary>
+            /// <param name="value">new value for the object</param>
+            void SetTo(RationalExpression^ value);
+
             /// <summary>
             /// Swaps the values of two integers.
             /// <para>This operation is a pointer swap and doesn't affect allocated memory.
diff --git a/mpir.net/mpir.net/HugeRational.cpp b/mpir.net/mpir.net/HugeRational.cpp
index 03140a4b..f8c9b9b4 100644
--- a/mpir.net/mpir.net/HugeRational.cpp
+++ b/mpir.net/mpir.net/HugeRational.cpp
@@ -387,4 +387,14 @@ namespace MPIR
     }
 
     #pragma endregion
+
+    #pragma region methods in other classes with rational parameters
+
+    void HugeInt::SetTo(MPEXPR_NAME^ value)
+    {
+        IN_CONTEXT(value);
+        mpz_set_q(_value, CTXT(0));
+    }
+
+    #pragma endregion
 };
\ No newline at end of file