From cf72623dbc9b7714ce3dccbd14d5839bad80912e Mon Sep 17 00:00:00 2001
From: Michael Becker <alcexhim@gmail.com>
Date: Sun, 5 Jan 2025 17:07:38 -0500
Subject: [PATCH] add DuplicateKeyException

---
 .../Collections/DuplicateKeyException.cs      | 24 +++++++++++++++++++
 1 file changed, 24 insertions(+)
 create mode 100644 framework-dotnet/src/lib/MBS.Core/Collections/DuplicateKeyException.cs

diff --git a/framework-dotnet/src/lib/MBS.Core/Collections/DuplicateKeyException.cs b/framework-dotnet/src/lib/MBS.Core/Collections/DuplicateKeyException.cs
new file mode 100644
index 0000000..7b2ab6b
--- /dev/null
+++ b/framework-dotnet/src/lib/MBS.Core/Collections/DuplicateKeyException.cs
@@ -0,0 +1,24 @@
+using System;
+
+namespace MBS.Core.Collections;
+
+
+/// <summary>
+/// The exception thrown when an item with the same key has already been added.
+/// </summary>
+public class DuplicateKeyException : ArgumentException
+{
+
+	public DuplicateKeyException() : base("An item with the same key has already been added.")
+	{
+	}
+	public DuplicateKeyException(Exception? innerException) : base("An item with the same key has already been added.", innerException)
+	{
+	}
+
+	public DuplicateKeyException(string? message) : base(message) { }
+	public DuplicateKeyException(string? message, Exception? innerException) : base(message, innerException) { }
+	public DuplicateKeyException(string? message, string? paramName) : base(message, paramName) { }
+	public DuplicateKeyException(string? message, string? paramName, Exception? innerException) : base(message, paramName, innerException) { }
+
+}