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iMES.WebApi/Helper/ControHelp.cs

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+using Newtonsoft.Json;
+using Newtonsoft.Json.Converters;
+using iMES.Bi.API;
+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Threading.Tasks;
+
+namespace iMES.Bi
+{
+    public class ControHelp
+    {
+        public static string CovJson(Msg_Result Model)
+        {
+            IsoDateTimeConverter timeConverter = new IsoDateTimeConverter();
+            timeConverter.DateTimeFormat = "yyyy-MM-dd HH:mm:ss";
+            string Result = JsonConvert.SerializeObject(Model, Formatting.Indented, timeConverter).Replace("null", "\"\"");
+            return Result;
+        }
+    }
+    public class NPOIMemoryStream : MemoryStream
+    {
+        /// <summary>
+        /// 获取流是否关闭
+        /// </summary>
+        public bool IsColse
+        {
+            get;
+            private set;
+        }
+
+        public NPOIMemoryStream(bool colse = false)
+        {
+            IsColse = colse;
+        }
+
+        public override void Close()
+        {
+            if (IsColse)
+            {
+                base.Close();
+            }
+
+        }
+    }
+}