1 files changed, 32 insertions, 0 deletions

diff --git a/src/WixToolset.Core.Native/Msm/IMsmStrings.cs b/src/WixToolset.Core.Native/Msm/IMsmStrings.cs
new file mode 100644
index 00000000..41063bfa
--- /dev/null
+++ b/src/WixToolset.Core.Native/Msm/IMsmStrings.cs
@@ -0,0 +1,32 @@
+// Copyright (c) .NET Foundation and contributors. All rights reserved. Licensed under the Microsoft Reciprocal License. See LICENSE.TXT file in the project root for full license information.
+
+namespace WixToolset.Core.Native.Msm
+{
+    using System;
+    using System.Runtime.InteropServices;
+
+    /// <summary>
+    /// A collection of strings.
+    /// </summary>
+    [ComImport, Guid("0ADDA827-2C26-11D2-AD65-00A0C9AF11A6")]
+    public interface IMsmStrings
+    {
+        /// <summary>
+        /// Gets the string at the specified index.
+        /// </summary>
+        /// <param name="index">The one-based index of the string to get.</param>
+        string this[int index]
+        {
+            get;
+        }
+
+        /// <summary>
+        /// Gets the count of strings in this collection.
+        /// </summary>
+        /// <value>The count of strings in this collection.</value>
+        int Count
+        {
+            get;
+        }
+    }
+}