磁导航1.0内部交管和信号交互

StandardScene.Signal/Model/SignalSelectAttribute.cs

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+using System;
+
+namespace StandardScene.Signal.Model
+{
+    /// <summary>
+    /// 迷毂数据中心把该字符串字段渲染成下拉。反射列定义时读取。
+    /// </summary>
+    [AttributeUsage(AttributeTargets.Property)]
+    public sealed class SignalSelectAttribute : Attribute
+    {
+        public SignalSelectAttribute(params string[] options)
+        {
+            Options = options ?? Array.Empty<string>();
+        }
+
+        public string[] Options { get; }
+    }
+}