diff --git a/AccessStudy.Core/OdbcUtil.cs b/AccessStudy.Core/OdbcUtil.cs
index c2752e9..d5c9f9a 100644
--- a/AccessStudy.Core/OdbcUtil.cs
+++ b/AccessStudy.Core/OdbcUtil.cs
@@ -5,19 +5,23 @@ using System.Data.Odbc;
 
 namespace AccessStudy.Core
 {
-    public class OdbcUtil:IDisposable
+    /// <summary>
+    /// 注意：参数用？代替，以顺序计数！
+    /// 如：select * from　tableA where id=? and age>?
+    /// </summary>
+    public class OdbcUtil : IDisposable
     {
         public OdbcConnection DbConnection { get; set; }
 
         public OdbcUtil()
         {
             var accessFile = $"{AppDomain.CurrentDomain.BaseDirectory}AccessDB\\Demo.accdb";
-            var connetString = $"Provider=Microsoft.ACE.OLEDB.12.0;Data Source={accessFile}";
+            var connetString = $@"Driver={{Microsoft Access Driver (*.mdb, *.accdb)}};Dbq={accessFile};";
             DbConnection = new OdbcConnection(connetString);
         }
 
         public OdbcUtil(string connetString)
-        { 
+        {
             DbConnection = new OdbcConnection(connetString);
         }
 
@@ -71,7 +75,7 @@ namespace AccessStudy.Core
 
                 adapter.Fill(dataSet);
             }
-            catch(Exception ex)
+            catch (Exception ex)
             {
                 Console.WriteLine(ex.Message);
             }
@@ -86,7 +90,7 @@ namespace AccessStudy.Core
         /// <summary>
         /// 获取DataSet
         /// </summary>
-        public DataSet GetDataSet(string sqlText, List<OdbcParameter> parameters=null)
+        public DataSet GetDataSet(string sqlText, List<OdbcParameter> parameters = null)
         {
             DataSet dataSet = new DataSet();
             try
@@ -99,11 +103,11 @@ namespace AccessStudy.Core
                     CommandText = sqlText,
                 };
 
-                if (parameters !=null)
-                { 
+                if (parameters != null)
+                {
                     command.Parameters.AddRange(parameters.ToArray());
                 }
-                
+
                 var adapter = new OdbcDataAdapter(command);
 
                 adapter.Fill(dataSet);
@@ -132,9 +136,9 @@ namespace AccessStudy.Core
         /// <summary>
         /// 获取DataTable
         /// </summary>
-        public DataTable GetDataTable(string sqlText, List<OdbcParameter> parameters=null)
+        public DataTable GetDataTable(string sqlText, List<OdbcParameter> parameters = null)
         {
-            DataSet dataSet = GetDataSet(sqlText,parameters);
+            DataSet dataSet = GetDataSet(sqlText, parameters);
             return dataSet.Tables[0];
         }
 
@@ -174,7 +178,7 @@ namespace AccessStudy.Core
         /// 获取DataReader
         /// 切记：用完之后主动关闭连接
         /// </summary>
-        public OdbcDataReader GetDataReader(string sqlText, List<OdbcParameter> parameters=null)
+        public OdbcDataReader GetDataReader(string sqlText, List<OdbcParameter> parameters = null)
         {
             OdbcDataReader dataReader = null;
             try
@@ -184,7 +188,7 @@ namespace AccessStudy.Core
                 {
                     Connection = DbConnection,
                     CommandType = CommandType.Text,
-                    CommandText =sqlText,
+                    CommandText = sqlText,
                 };
 
                 if (parameters != null)
@@ -211,7 +215,7 @@ namespace AccessStudy.Core
         /// 获取第一行第一列的值
         /// 不存在则为null
         /// </summary>
-        public object GetScalar(string sqlText, List<OdbcParameter> parameters=null)
+        public object GetScalar(string sqlText, List<OdbcParameter> parameters = null)
         {
             object result = null;
 
@@ -234,7 +238,7 @@ namespace AccessStudy.Core
             }
             catch (Exception ex)
             {
-               throw ex;
+                throw ex;
             }
             finally
             {
@@ -305,7 +309,7 @@ namespace AccessStudy.Core
 
         public void Dispose()
         {
-            if (DbConnection.State==ConnectionState.Open)
+            if (DbConnection.State == ConnectionState.Open)
             {
                 DbConnection.Close();
             }
diff --git a/AccessStudy.Core/StudentServer.cs b/AccessStudy.Core/StudentDal.cs
similarity index 80%
rename from AccessStudy.Core/StudentServer.cs
rename to AccessStudy.Core/StudentDal.cs
index 40a82ae..89a26e1 100644
--- a/AccessStudy.Core/StudentServer.cs
+++ b/AccessStudy.Core/StudentDal.cs
@@ -8,7 +8,7 @@ using System.Text;
 
 namespace AccessStudy.Core
 {
-    public class StudentServer
+    public class StudentDal
     {
         private OledbUtil dbUtil = new OledbUtil();
 
@@ -39,6 +39,21 @@ namespace AccessStudy.Core
             return DataTable2Model(dataTable).FirstOrDefault();
         }
 
+        /// <summary>
+        /// 按名称查询学生
+        /// </summary>
+        public Student Get(string studentName)
+        {
+            var querySql = "select * from Student where Name=@studentName";
+            var paras = new List<OleDbParameter>()
+            {
+                new OleDbParameter("studentName",studentName)
+            };
+            var dataTable = dbUtil.GetDataTable(querySql, paras);
+
+            return DataTable2Model(dataTable).FirstOrDefault();
+        }
+
         /// <summary>
         /// 添加学生
         /// </summary>
@@ -47,11 +62,10 @@ namespace AccessStudy.Core
             var querySql = "INSERT INTO `Student` (Name,Age,Address,School) VALUES(@Name,@Age,@Address,@School); ";
             var paras = new List<OleDbParameter>()
             {
-                new OleDbParameter("Id",student.Id),
-                new OleDbParameter("Name",student.Name),
-                new OleDbParameter("Age",student.Age),
-                new OleDbParameter("Address",student.Address),
-                new OleDbParameter("School",student.School),
+                new OleDbParameter("@Name",student.Name),
+                new OleDbParameter("@Age",student.Age),
+                new OleDbParameter("@Address",student.Address),
+                new OleDbParameter("@School",student.School),
             };
 
             var effectRow = dbUtil.ExecuteNonQuery(querySql, paras);
@@ -67,11 +81,11 @@ namespace AccessStudy.Core
             var querySql = "Update Student Set Name=@Name,Age=@Age,Address=@Address,School=@School where Id=@Id;";
             var paras = new List<OleDbParameter>()
             {
-                new OleDbParameter("Id",student.Id),
                 new OleDbParameter("Name",student.Name),
                 new OleDbParameter("Age",student.Age),
                 new OleDbParameter("Address",student.Address),
                 new OleDbParameter("School",student.School),
+                new OleDbParameter("Id",student.Id),
             };
 
             var effectRow = dbUtil.ExecuteNonQuery(querySql, paras);
@@ -98,7 +112,7 @@ namespace AccessStudy.Core
         /// <summary>
         /// DataTable转实体列表
         /// </summary>
-        public List<Student> DataTable2Model(DataTable dTable)
+        private List<Student> DataTable2Model(DataTable dTable)
         {
             List<Student> students = new List<Student>();
 
diff --git a/AccessStudy.CoreTest/OdbcUtilTest.cs b/AccessStudy.CoreTest/OdbcUtilTest.cs
index 0dbd266..77c4aa1 100644
--- a/AccessStudy.CoreTest/OdbcUtilTest.cs
+++ b/AccessStudy.CoreTest/OdbcUtilTest.cs
@@ -1,17 +1,121 @@
 using System;
 using System.Collections.Generic;
 using System.Text;
+using System.Data.Odbc;
 
 using Xunit;
+using Shouldly;
+
+using AccessStudy.Core;
 
 namespace AccessStudy.CoreTest
 {
-    public class OdbcUtilTest
+    public class OdbcUtilTest:IDisposable
     {
+        private readonly OdbcUtil _dbUtil;
+        public OdbcUtilTest()
+        {
+            _dbUtil = new OdbcUtil();
+        }
+
+        [Fact]
+        public void DbUtil_NotNull_Test()
+        {
+            Assert.NotNull(_dbUtil);
+        }
+
+        [Fact]
+        public void DbConnet_Test()
+        {
+            var con = _dbUtil.DbConnection;
+            Assert.NotNull(con);
+
+            Action action = () =>
+            {
+                con.Open();
+                con.Close();
+                con.Dispose();
+            };
+
+            Should.NotThrow(action);
+        }
+
+        [Fact]
+        public void DataSet_Test()
+        {
+            var ds = _dbUtil.GetDataSet("Student");
+
+            Assert.NotNull(ds);
+
+            Assert.NotNull(ds.Tables);
+
+            Assert.True(ds.Tables.Count > 0);
+        }
+
+        [Fact]
+        public void DataTable_Test()
+        {
+            var dt = _dbUtil.GetDataTable("Student");
+            Assert.NotNull(dt);
+        }
+
+        [Fact]
+        public void DataReader_Test()
+        {
+            Action action = () =>
+            {
+                var dataReader = _dbUtil.GetDataReader("Student");
+                while (dataReader.Read())
+                {
+                    break;
+                }
+
+                dataReader.Close();
+            };
+
+            Should.NotThrow(action);
+        }
+
+        /// <summary>
+        /// 参数使用不同
+        /// SQL语句中用？代表参数，按参数顺序传参
+        /// 参数名以不用@开头都可以
+        /// </summary>
+        [Fact]
+        public void Scalar_Test()
+        {
+            //
+
+            var sqlText = @"select count(*) as Total from Student where Age>? ;";
+            var paras = new List<OdbcParameter>()
+            {
+                new OdbcParameter("@Age",1),
+            };
+
+            var total = (int)_dbUtil.GetScalar(sqlText, paras);
+
+            Assert.True(total >= 0);
+        }
+
+
         [Fact]
-        public void Test()
-        { 
-                    
+        public void NonQuery_Test()
+        {
+            var sqlText = @"update Student Set Age=Age+1 where Age>? AND Name <>?;";
+            var paras = new List<OdbcParameter>()
+            {
+                new OdbcParameter("Age",1),
+                new OdbcParameter("Name","王高峰"),
+            };
+
+            var total = _dbUtil.ExecuteNonQuery(sqlText, paras);
+
+            Assert.True(total >= 0);
+        }
+
+        public void Dispose()
+        {
+             
         }
     }
 }
diff --git a/AccessStudy.CoreTest/OleDbUtilTest.cs b/AccessStudy.CoreTest/OleDbUtilTest.cs
index 16dbeb9..f4db8d1 100644
--- a/AccessStudy.CoreTest/OleDbUtilTest.cs
+++ b/AccessStudy.CoreTest/OleDbUtilTest.cs
@@ -13,7 +13,7 @@ using System.Data.OleDb;
 
 namespace AccessStudy.CoreTest
 {
-    public class OleDbUtilTest:IDisposable
+    public class OleDbUtilTest : IDisposable
     {
 
         private readonly OledbUtil _dbUtil;
@@ -34,13 +34,11 @@ namespace AccessStudy.CoreTest
             var con = _dbUtil.DbConnection;
             Assert.NotNull(con);
 
-            Action action = () => 
-            { 
+            Action action = () =>
+            {
                 con.Open();
                 con.Close();
                 con.Dispose();
-
-                //throw new Exception("特意抛出的异常！");
             };
 
             Should.NotThrow(action);
@@ -55,7 +53,7 @@ namespace AccessStudy.CoreTest
 
             Assert.NotNull(ds.Tables);
 
-            Assert.True(ds.Tables.Count>0);
+            Assert.True(ds.Tables.Count > 0);
         }
 
         [Fact]
@@ -68,7 +66,7 @@ namespace AccessStudy.CoreTest
         [Fact]
         public void DataReader_Test()
         {
-            Action action = () => 
+            Action action = () =>
             {
                 var dataReader = _dbUtil.GetDataReader("Student");
                 while (dataReader.Read())
@@ -97,7 +95,7 @@ namespace AccessStudy.CoreTest
             Assert.True(total >= 0);
         }
 
-        
+
         [Fact]
         public void NonQuery_Test()
         {
@@ -113,8 +111,6 @@ namespace AccessStudy.CoreTest
             Assert.True(total >= 0);
         }
 
-
-
         public void Dispose()
         {
         }
diff --git a/AccessStudy.CoreTest/StudentDalTest.cs b/AccessStudy.CoreTest/StudentDalTest.cs
new file mode 100644
index 0000000..b370c51
--- /dev/null
+++ b/AccessStudy.CoreTest/StudentDalTest.cs
@@ -0,0 +1,62 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+using System.Data.Odbc;
+
+using Xunit;
+using Shouldly;
+
+using AccessStudy.Core;
+
+namespace AccessStudy.CoreTest
+{
+    public class StudentDalTest:IDisposable
+    {
+        private readonly StudentDal _dal;
+        public StudentDalTest()
+        {
+            _dal = new StudentDal();
+        }
+
+        [Fact]
+        public void GetAll_Test()
+        {
+            var all = _dal.GetAll();
+
+            Assert.NotNull(all);
+        }
+
+        [Fact]
+        public void Add_Get_Update_Delete_Test()
+        {
+            var guidName = Guid.NewGuid().ToString().Replace("-","");
+            var student = new Student() 
+            { 
+                Id=0,
+                Name=guidName,
+                Age=22,
+                Address="",
+                School="Shcool",
+            };
+
+            var addResult = _dal.Add(student);
+            Assert.True(addResult);
+
+            var addStudent = _dal.Get(guidName);
+            Assert.True(addStudent.Name == student.Name && addStudent.Age == student.Age && addStudent.School == student.School);
+
+            addStudent.School = Guid.NewGuid().ToString();
+            var updateResult = _dal.Update(addStudent);
+            Assert.True(updateResult);
+
+            var delResult = _dal.Delete(addStudent.Id);
+
+            Assert.True(delResult);
+        }
+
+        public void Dispose()
+        {
+             
+        }
+    }
+}