添加对 Core 的直接引用

RhythmBaseCore/Exceptions/ExpressionException.cs

@@ -0,0 +1,23 @@
+namespace RhythmBase.Exceptions
+{
+	/// <summary>
+	/// Represents errors that occur during expression evaluation in the RhythmBase application.
+	/// </summary>
+	public class ExpressionException : RhythmBaseException
+	{
+		/// <summary>
+		/// Initializes a new instance of the <see cref="ExpressionException"/> class.
+		/// </summary>
+		public ExpressionException()
+		{
+		}
+
+		/// <summary>
+		/// Initializes a new instance of the <see cref="ExpressionException"/> class with a specified error message.
+		/// </summary>
+		/// <param name="message">The message that describes the error.</param>
+		public ExpressionException(string message) : base(message)
+		{
+		}
+	}
+}