From 0f5116d0d6bbf9200c73eb373f55c84d293a739a Mon Sep 17 00:00:00 2001
From: 2881099 <2881099@qq.com>
Date: Fri, 16 Sep 2022 16:13:49 +0800
Subject: [PATCH] =?UTF-8?q?-=20=E4=BC=98=E5=8C=96=20=E8=A1=A8=E8=BE=BE?=
 =?UTF-8?q?=E5=BC=8F=E6=A0=91=E8=A7=A3=E6=9E=90=E4=B8=BA=20NULL=20?=
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---
 FreeSql/Internal/CommonExpression.cs | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/FreeSql/Internal/CommonExpression.cs b/FreeSql/Internal/CommonExpression.cs
index 073aa1a1..50c67be3 100644
--- a/FreeSql/Internal/CommonExpression.cs
+++ b/FreeSql/Internal/CommonExpression.cs
@@ -1724,6 +1724,7 @@ namespace FreeSql.Internal
                             }
                             while (expStack.Any())
                             {
+                                if (firstValue == null) throw new Exception(CoreStrings.Cannot_Be_NULL_Name(exp));
                                 var expStackItem = expStack.Pop() as MemberExpression;
                                 if (expStackItem.Member.MemberType == MemberTypes.Property)
                                     firstValue = ((PropertyInfo)expStackItem.Member).GetValue(firstValue, null);
@@ -2077,6 +2078,7 @@ namespace FreeSql.Internal
                     }
                     while (expStack.Any())
                     {
+                        if (firstValue == null) throw new Exception(CoreStrings.Cannot_Be_NULL_Name(exp));
                         var expStackItem = expStack.Pop() as MemberExpression;
                         if (expStackItem.Member.MemberType == MemberTypes.Property)
                             firstValue = ((PropertyInfo)expStackItem.Member).GetValue(firstValue, null);