From 83e60ad446983589e47ba65e65174c9473fa584e Mon Sep 17 00:00:00 2001
From: sunkaixuan <610262374@qq.com>
Date: Wed, 24 May 2017 13:43:08 +0800
Subject: [PATCH] -

---
 OrmTest/UnitTest/Insert.cs                          | 4 ++++
 SqlSugar/Realization/SqlServer/SqlServerProvider.cs | 4 +++-
 2 files changed, 7 insertions(+), 1 deletion(-)

diff --git a/OrmTest/UnitTest/Insert.cs b/OrmTest/UnitTest/Insert.cs
index f082fc9af..b85e73018 100644
--- a/OrmTest/UnitTest/Insert.cs
+++ b/OrmTest/UnitTest/Insert.cs
@@ -35,6 +35,7 @@ namespace OrmTest.UnitTest
            }, t1.Key, t1.Value, "Insert t1 error"
            );
 
+
             //Insert reutrn Command Count
             var t2 = db.Insertable(insertObj).ExecuteCommand();
 
@@ -114,6 +115,9 @@ INSERT INTO [Student]
                 insertObjs.Add(new Student() { Name = "name" + i });
             }
             var s9 = db.Insertable(insertObjs.ToArray()).InsertColumns(it => new { it.Name }).With(SqlWith.UpdLock).ToSql();
+
+            insertObj.Name = null;
+            var t10 = db.Insertable(insertObj).ExecuteCommand();
         }
 
         public SqlSugarClient GetInstance()
diff --git a/SqlSugar/Realization/SqlServer/SqlServerProvider.cs b/SqlSugar/Realization/SqlServer/SqlServerProvider.cs
index 08063ce34..b880fdd2e 100644
--- a/SqlSugar/Realization/SqlServer/SqlServerProvider.cs
+++ b/SqlSugar/Realization/SqlServer/SqlServerProvider.cs
@@ -1,4 +1,5 @@
-using System.Collections.Generic;
+using System;
+using System.Collections.Generic;
 using System.Data;
 using System.Data.SqlClient;
 using System.Linq;
@@ -79,6 +80,7 @@ namespace SqlSugar
             int i = 0;
             foreach (var par in pars)
             {
+                if (par.Value == null) par.Value = DBNull.Value;
                 var p = new SqlParameter();
                 p.ParameterName = par.ParameterName;
                 p.UdtTypeName = par.UdtTypeName;