添加项目文件。

WPFWCSDemo/Utilities/DataCheck.cs

@@ -0,0 +1,16 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace WPFWCSDemo.Utilities
+{
+    public class DataCheck
+    {
+        public static string IsBarcodeIllegal(string barcode)
+        {
+            return "条码格式错误！";
+        }
+    }
+}