1 files changed, 55 insertions, 0 deletions

diff --git a/src/dtf/WixToolset.Dtf.WindowsInstaller/CustomActionAttribute.cs b/src/dtf/WixToolset.Dtf.WindowsInstaller/CustomActionAttribute.cs
new file mode 100644
index 00000000..d9bdb71b
--- /dev/null
+++ b/src/dtf/WixToolset.Dtf.WindowsInstaller/CustomActionAttribute.cs
@@ -0,0 +1,55 @@
+// 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.Dtf.WindowsInstaller
+{
+    using System;
+    using System.Reflection;
+
+    /// <summary>
+    /// Marks a method as a custom action entry point.
+    /// </summary>
+    /// <remarks><p>
+    /// A custom action method must be defined as public and static,
+    /// take a single <see cref="Session"/> object as a parameter,
+    /// and return an <see cref="ActionResult"/> enumeration value.
+    /// </p></remarks>
+    [Serializable, AttributeUsage(AttributeTargets.Method)]
+    public sealed class CustomActionAttribute : Attribute
+    {
+        /// <summary>
+        /// Name of the custom action entrypoint, or null if the same as the method name.
+        /// </summary>
+        private string name;
+
+        /// <summary>
+        /// Marks a method as a custom action entry point.
+        /// </summary>
+        public CustomActionAttribute()
+            : this(null)
+        {
+        }
+
+        /// <summary>
+        /// Marks a method as a custom action entry point.
+        /// </summary>
+        /// <param name="name">Name of the function to be exported,
+        /// defaults to the name of this method</param>
+        public CustomActionAttribute(string name)
+        {
+            this.name = name;
+        }
+
+        /// <summary>
+        /// Gets or sets the name of the custom action entrypoint. A null
+        /// value defaults to the name of the method.
+        /// </summary>
+        /// <value>name of the custom action entrypoint, or null if none was specified</value>
+        public string Name
+        {
+            get
+            {
+                return this.name;
+            }
+        }
+    }
+}