1 files changed, 25 insertions, 0 deletions

diff --git a/src/WixToolset.Data.WindowsInstaller/Common.cs b/src/WixToolset.Data.WindowsInstaller/Common.cs
new file mode 100644
index 00000000..a1e1e607
--- /dev/null
+++ b/src/WixToolset.Data.WindowsInstaller/Common.cs
@@ -0,0 +1,25 @@
+// 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
+{
+    using System;
+    using System.Text.RegularExpressions;
+
+    internal static class Common
+    {
+        private static readonly Regex LegalIdentifierCharacters = new Regex(@"^[_A-Za-z][0-9A-Za-z_\.]*$", RegexOptions.Compiled);
+
+        public static bool IsIdentifier(string value)
+        {
+            if (!String.IsNullOrEmpty(value))
+            {
+                if (LegalIdentifierCharacters.IsMatch(value))
+                {
+                    return true;
+                }
+            }
+
+            return false;
+        }
+    }
+}