1 files changed, 22 insertions, 0 deletions

diff --git a/src/WixToolset.Data/EmptyRule.cs b/src/WixToolset.Data/EmptyRule.cs
new file mode 100644
index 00000000..0170e457
--- /dev/null
+++ b/src/WixToolset.Data/EmptyRule.cs
@@ -0,0 +1,22 @@
+// 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.Data
+{
+    public enum EmptyRule
+    {
+        /// <summary>
+        /// The trimmed value cannot be empty.
+        /// </summary>
+        MustHaveNonWhitespaceCharacters,
+
+        /// <summary>
+        /// The trimmed value can be empty, but the value itself cannot be empty.
+        /// </summary>
+        CanBeWhitespaceOnly,
+
+        /// <summary>
+        /// The value can be empty.
+        /// </summary>
+        CanBeEmpty
+    }
+}