转移.net core 3.1，为.NET 5做准备

Infrastructure/Filter.cs

@@ -1,9 +1,25 @@
 namespace Infrastructure
 {
+   
     public class Filter
     {
         public string Key { get; set; }
         public string Value { get; set; }
         public string Contrast { get; set; }
+        
+        public string Text { get; set; }
     }
+
+    public class FilterGroup 
+    {
+        /// <summary>
+        /// or /and
+        /// </summary>
+        public string Operation { get; set; }
+        public Filter[] Filters { get; set; }
+        public FilterGroup[] Children { get; set; }
+    }
+    
+    
+    
 }