From 7addc23a6f744addbb66b8910df3ab3f9b19100e Mon Sep 17 00:00:00 2001
From: sunkaixuan <610262374@qq.com>
Date: Thu, 14 Jul 2022 13:15:38 +0800
Subject: [PATCH] Adding constraints

---
 Src/Asp.Net/SqlSugar/Utilities/UtilMethods.cs | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/Src/Asp.Net/SqlSugar/Utilities/UtilMethods.cs b/Src/Asp.Net/SqlSugar/Utilities/UtilMethods.cs
index 4c6567a63..8ff8b35f1 100644
--- a/Src/Asp.Net/SqlSugar/Utilities/UtilMethods.cs
+++ b/Src/Asp.Net/SqlSugar/Utilities/UtilMethods.cs
@@ -823,7 +823,10 @@ namespace SqlSugar
         public static void CheckArray<T>(T[] insertObjs) where T : class, new()
         {
 
-            if (insertObjs != null && insertObjs.Length == 1 && insertObjs.FirstOrDefault().GetType().FullName.Contains("System.Collections.Generic.List`"))
+            if (insertObjs != null 
+                && insertObjs.Length == 1
+                && insertObjs.FirstOrDefault()!=null
+                && insertObjs.FirstOrDefault().GetType().FullName.Contains("System.Collections.Generic.List`"))
             {
                 Check.ExceptionEasy("Insertable(T []) is an array and your argument is a List", "二次封装引起的进错重载,当前方法是 Insertable(T []) 参数是一个数组，而你的参数是一个List");
             }