1 files changed, 25 insertions, 0 deletions
diff --git a/Timeline/Services/UsernameConfictException.cs b/Timeline/Services/UsernameConfictException.cs
new file mode 100644
index 00000000..fde1eda6
--- /dev/null
+++ b/Timeline/Services/UsernameConfictException.cs
@@ -0,0 +1,25 @@
+using System;
+using Timeline.Helpers;
+
+namespace Timeline.Services
+{
+    /// <summary>
+    /// Thrown when the user already exists.
+    /// </summary>
+    [Serializable]
+    public class UsernameConfictException : Exception
+    {
+        public UsernameConfictException() : base(Resources.Services.Exception.UsernameConfictException) { }
+        public UsernameConfictException(string username) : base(Log.Format(Resources.Services.Exception.UsernameConfictException, ("Username", username))) { Username = username; }
+        public UsernameConfictException(string username, string message) : base(message) { Username = username; }
+        public UsernameConfictException(string message, Exception inner) : base(message, inner) { }
+        protected UsernameConfictException(
+          System.Runtime.Serialization.SerializationInfo info,
+          System.Runtime.Serialization.StreamingContext context) : base(info, context) { }
+
+        /// <summary>
+        /// The username that already exists.
+        /// </summary>
+        public string? Username { get; set; }
+    }
+}