添加项目文件。

口罩泄露定制款/Data/IDGenerator.cs

@@ -0,0 +1,31 @@
+using System.IO;
+
+namespace 口罩泄露定制款
+{
+    public class IDGenerator
+    {
+        private static int currentID;
+        private static readonly object lockObject = new object();
+        private const string prefix = "ID-";
+        private const string filePath = "currentID.txt";
+
+        static IDGenerator()
+        {
+            if (File.Exists(filePath))
+            {
+                var idString = File.ReadAllText(filePath);
+                int.TryParse(idString, out currentID);
+            }
+        }
+
+        public static string GenerateID()
+        {
+            lock (lockObject)
+            {
+                currentID++;
+                File.WriteAllText(filePath, currentID.ToString());
+                return $"{prefix}{currentID:D5}"; // 生成形如 "ID-00001" 的编号
+            }
+        }
+    }
+}