提交.Net6版本

Yi.Framework.Net5/Yi.Framework.Model/ModelFactory/DbContextExtend.cs

@@ -0,0 +1,23 @@
+using Microsoft.EntityFrameworkCore;
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace Yi.Framework.Model.ModelFactory
+{
+    public static class DbContextExtend
+    { 
+        public static DbContext ToWriteOrRead(this DbContext dbContext, string conn)
+        {
+            if (dbContext is DataContext)
+            {
+
+                var context= (DataContext)dbContext; // context 是 EFCoreContext 实例；
+
+                return context.ToWriteOrRead(conn);
+            }
+            else
+                throw new Exception();
+        }
+    }
+}