From e661d2103d1c0c7b94a81bd8c548a7622fef2d60 Mon Sep 17 00:00:00 2001
From: sunkaixuan <610262374@qq.com>
Date: Sun, 12 Jun 2022 15:24:14 +0800
Subject: [PATCH] Optimize error message

---
 Src/Asp.Net/SqlSugar/Realization/MySql/MySqlProvider.cs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Src/Asp.Net/SqlSugar/Realization/MySql/MySqlProvider.cs b/Src/Asp.Net/SqlSugar/Realization/MySql/MySqlProvider.cs
index da41e6930..024a787b6 100644
--- a/Src/Asp.Net/SqlSugar/Realization/MySql/MySqlProvider.cs
+++ b/Src/Asp.Net/SqlSugar/Realization/MySql/MySqlProvider.cs
@@ -20,6 +20,7 @@ namespace SqlSugar
                     try
                     {
                         var mySqlConnectionString = base.Context.CurrentConnectionConfig.ConnectionString;
+                        Check.ExceptionEasy(mySqlConnectionString == null, "ConnectionString is not null", "连接字符串ConnectionString不能为Null");
                         if (!mySqlConnectionString.ToLower().Contains("charset")&& !mySqlConnectionString.ToLower().Contains("character"))
                         {
                             mySqlConnectionString = mySqlConnectionString.Trim().TrimEnd(';') + ";charset=utf8;";