diff --git a/TupleStudy/Student.cs b/TupleStudy/Student.cs
new file mode 100644
index 0000000..9c7ec80
--- /dev/null
+++ b/TupleStudy/Student.cs
@@ -0,0 +1,27 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace TupleStudy
+{
+ ///
+ /// 学生类
+ ///
+ public class Student
+ {
+ ///
+ /// 编号
+ ///
+ public int Id { get; set; }
+
+ ///
+ /// 姓名
+ ///
+ public string Name{ get; set; }
+
+ ///
+ /// 年龄
+ ///
+ public UInt16 Age { get; set; }
+ }
+}
diff --git a/TupleStudy/TupleStudy.cs b/TupleStudy/TupleStudy.cs
new file mode 100644
index 0000000..8427bdf
--- /dev/null
+++ b/TupleStudy/TupleStudy.cs
@@ -0,0 +1,117 @@
+using System;
+
+namespace TupleStudy
+{
+ ///
+ /// Tuple 学习
+ /// 元组是一种数据结构，具有特定数量和元素序列。
+ /// Tuple是C# 4.0时出的新特性，.Net Framework 4.0以上版本可用。
+ ///
+ public class TupleStudy
+ {
+ #region 创建元组
+ /*
+ 注意：仅支持1到7个元组元素，如果有8个元素或者更多，需要使用Tuple的嵌套和Rest属性去实现。
+ */
+
+ ///
+ /// 利用构造函数创建元组
+ /// 灵活，没有个数等限制
+ ///
+ public Tuple GetTuple_Constructor_One()
+ {
+ var tuple = new Tuple(1);
+
+ return tuple;
+ }
+
+ public Tuple GetTuple_Constructor_One(T tupleType)
+ {
+ var tuple = new Tuple(tupleType);
+
+ return tuple;
+ }
+
+ ///
+ /// 利用静态 Create方法创建元组
+ /// 最多支持八个元素
+ ///
+ public Tuple GetTuple_StaticMethod_Tow(T1 tupleValue1, T2 tupleValue2)
+ {
+ var tuple = Tuple.Create(tupleValue1,tupleValue2);
+
+ return tuple;
+ }
+
+ ///
+ /// 超过8项，使用嵌套
+ ///
+ public Tuple> GetTuple_Constructor_Nest()
+ {
+ var nestTuple = new Tuple(8, "嵌套Tuple");
+ var tuple = new Tuple>(1, 2, 3, 4, 5, 6, 7, nestTuple);
+
+
+ //此处不能使用Tuple.Create()方法
+ return tuple;
+ }
+ #endregion
+
+ #region 表示一组数据
+
+ ///
+ /// 返回一组数据
+ ///
+ public Tuple GetStudentTuple(int id=1,string name="wanggaofeng", uint age=18)
+ {
+ var tuple = Tuple.Create(id, name, age);
+ return tuple;
+ }
+ #endregion
+
+ #region 从方法返回多个值
+
+ ///
+ /// 方法返回多值
+ ///
+ public Tuple GetEgg()
+ {
+ var tuple = Tuple.Create(1, "白色金蛋", 2018001, new decimal(25.50));
+
+ return tuple;
+ }
+ #endregion
+
+ #region 用于单参数方法的多值传递
+ ///
+ /// 砸金蛋
+ /// 单参数方法的多值传递
+ ///
+ public bool SmashEgg(object egg)
+ {
+ var tuple = egg as Tuple;
+ if (tuple == null)
+ {
+ return false;
+ }
+
+ if (tuple.Item1 % 2 ==0)
+ {
+ return true;
+ }
+ else
+ {
+ return false;
+ }
+ }
+ #endregion
+
+ #region 缺点
+ // 访问元素的时候只能通过ItemX去访问，使用前需要明确元素顺序，属性名字没有实际意义，不方便记忆；
+
+ // 最多有八个元素，要想更多只能通过最后一个元素进行嵌套扩展；
+
+ // Tuple是一个引用类型，不像其它的简单类型一样是值类型，它在堆上分配空间，在CPU密集操作时可能有太多的创建和分配工作。
+ #endregion
+ }
+}
diff --git a/TupleStudy/TupleStudy.csproj b/TupleStudy/TupleStudy.csproj
new file mode 100644
index 0000000..9f5c4f4
--- /dev/null
+++ b/TupleStudy/TupleStudy.csproj
@@ -0,0 +1,7 @@
+
+
+
+ netstandard2.0
+
+
+
diff --git a/TupleStudy/ValueTupleStudy.cs b/TupleStudy/ValueTupleStudy.cs
new file mode 100644
index 0000000..8c5e5b1
--- /dev/null
+++ b/TupleStudy/ValueTupleStudy.cs
@@ -0,0 +1,19 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace TupleStudy
+{
+ ///
+ /// 值元组 学习
+ /// ValueTuple是C# 7.0的新特性之一，.Net Framework 4.7以上版本可用, 其它版本可以用 nuget 添加System.ValueTuple
+ /// 值元组也是一种数据结构，用于表示特定数量和元素序列，但是是和元组类不一样的，主要区别如下：
+ /// 值元组是结构，是值类型，不是类，而元组（Tuple）是类，引用类型；
+ /// 值元组元素是可变的，不是只读的，也就是说可以改变值元组中的元素值；
+ /// 值元组的数据成员是字段不是属性。
+ ///
+ public class ValueTupleStudy
+ {
+
+ }
+}
diff --git a/TupleStudyTest/Properties/AssemblyInfo.cs b/TupleStudyTest/Properties/AssemblyInfo.cs
new file mode 100644
index 0000000..9be1d88
--- /dev/null
+++ b/TupleStudyTest/Properties/AssemblyInfo.cs
@@ -0,0 +1,36 @@
+using System.Reflection;
+using System.Runtime.CompilerServices;
+using System.Runtime.InteropServices;
+
+// 有关程序集的一般信息由以下
+// 控制。更改这些特性值可修改
+// 与程序集关联的信息。
+[assembly: AssemblyTitle("TupleStudyTest")]
+[assembly: AssemblyDescription("")]
+[assembly: AssemblyConfiguration("")]
+[assembly: AssemblyCompany("")]
+[assembly: AssemblyProduct("TupleStudyTest")]
+[assembly: AssemblyCopyright("Copyright © 2018")]
+[assembly: AssemblyTrademark("")]
+[assembly: AssemblyCulture("")]
+
+// 将 ComVisible 设置为 false 会使此程序集中的类型
+//对 COM 组件不可见。如果需要从 COM 访问此程序集中的类型
+//请将此类型的 ComVisible 特性设置为 true。
+[assembly: ComVisible(false)]
+
+// 如果此项目向 COM 公开，则下列 GUID 用于类型库的 ID
+[assembly: Guid("d8cbdb9a-3eda-4a6b-bb13-e7765b63717e")]
+
+// 程序集的版本信息由下列四个值组成:
+//
+// 主版本
+// 次版本
+// 生成号
+// 修订号
+//
+// 可以指定所有值，也可以使用以下所示的 "*" 预置版本号和修订号
+//通过使用 "*"，如下所示:
+// [assembly: AssemblyVersion("1.0.*")]
+[assembly: AssemblyVersion("1.0.0.0")]
+[assembly: AssemblyFileVersion("1.0.0.0")]
diff --git a/TupleStudyTest/TupleStudyTest.cs b/TupleStudyTest/TupleStudyTest.cs
new file mode 100644
index 0000000..cc2e833
--- /dev/null
+++ b/TupleStudyTest/TupleStudyTest.cs
@@ -0,0 +1,104 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+using Xunit;
+using Xunit.Abstractions;
+using Xunit.Extensions;
+using Xunit.Sdk;
+
+using TupleStudy;
+
+namespace TupleStudyTest
+{
+ public class TupleStudyTest
+ {
+ private TupleStudy.TupleStudy tupleStudy;
+
+ public TupleStudyTest()
+ {
+ tupleStudy = new TupleStudy.TupleStudy();
+ }
+
+ [Fact]
+ public void GetTuple_Constructor_One_Test()
+ {
+ var tuple = tupleStudy.GetTuple_Constructor_One();
+ Assert.Equal(1, tuple.Item1);
+ }
+
+ [Fact]
+ public void GetTuple_Constructor_One_Test2()
+ {
+ var tuple = tupleStudy.GetTuple_Constructor_One(5);
+ Assert.Equal(5, tuple.Item1);
+
+ var tuple2 = tupleStudy.GetTuple_Constructor_One("wanggaofeng");
+ Assert.Equal("wanggaofeng", tuple2.Item1);
+
+ var student = new Student() { Id = 1, Name = "wanggaofeng", Age = 28 };
+
+ var studentTuple = tupleStudy.GetTuple_Constructor_One (student);
+ Assert.Equal(student, studentTuple.Item1);
+ }
+
+ [Fact]
+ public void GetTuple_StaticMethod_Tow_Test()
+ {
+ var tuple = tupleStudy.GetTuple_StaticMethod_Tow(5,"wanggaofeng");
+ Assert.Equal(5, tuple.Item1);
+ Assert.Equal("wanggaofeng", tuple.Item2);
+
+ var student = new Student() { Id = 1, Name = "wanggaofeng", Age = 28 };
+
+ var studentTuple = tupleStudy.GetTuple_StaticMethod_Tow("静态方法",student);
+ Assert.Equal("静态方法", studentTuple.Item1);
+ Assert.Equal(student, studentTuple.Item2);
+ }
+
+ [Fact]
+ public void GetTuple_Constructor_Nest_Test()
+ {
+ var tuple = tupleStudy.GetTuple_Constructor_Nest();
+
+ Assert.Equal(1, tuple.Item1);
+ Assert.Equal(2, tuple.Item2);
+ Assert.Equal(3, tuple.Item3);
+ Assert.Equal(4, tuple.Item4);
+ Assert.Equal(5, tuple.Item5);
+ Assert.Equal(6, tuple.Item6);
+ Assert.Equal(7, tuple.Item7);
+
+ Assert.Equal(8, tuple.Rest.Item1);
+ Assert.Equal("嵌套Tuple", tuple.Rest.Item2);
+ }
+
+ [Fact]
+ public void GetStudentTuple_Test()
+ {
+ var tuple = tupleStudy.GetStudentTuple(2,"王高峰",30);
+
+ Assert.Equal(2, tuple.Item1);
+ Assert.Equal("王高峰", tuple.Item2);
+ Assert.True(30==tuple.Item3);
+ }
+
+ [Fact]
+ public void SashEgg_Test()
+ {
+ var tuple1 = new Tuple("错误的参数",1, "白色金蛋", 2018001, new decimal(25.50));
+ var reslul1 = tupleStudy.SmashEgg(tuple1);
+ Assert.False(reslul1);
+
+ var tuple2 = new Tuple(1, "白色金蛋", 2018001, new decimal(25.50));
+ var reslul2 = tupleStudy.SmashEgg(tuple2);
+ Assert.False(reslul2);
+
+ var tuple3 = new Tuple(2, "白色金蛋", 2018001, new decimal(25.50));
+ var reslul3 = tupleStudy.SmashEgg(tuple3);
+ Assert.True(reslul3);
+ }
+ }
+}
diff --git a/TupleStudyTest/TupleStudyTest.csproj b/TupleStudyTest/TupleStudyTest.csproj
new file mode 100644
index 0000000..cb40066
--- /dev/null
+++ b/TupleStudyTest/TupleStudyTest.csproj
@@ -0,0 +1,88 @@
+
+
+
+
+
+
+ Debug
+ AnyCPU
+ {D8CBDB9A-3EDA-4A6B-BB13-E7765B63717E}
+ Library
+ Properties
+ TupleStudyTest
+ TupleStudyTest
+ v4.6.1
+ 512
+
+
+
+
+ true
+ full
+ false
+ bin\Debug\
+ DEBUG;TRACE
+ prompt
+ 4
+
+
+ pdbonly
+ true
+ bin\Release\
+ TRACE
+ prompt
+ 4
+
+
+
+
+
+
+
+
+
+
+
+ ..\packages\xunit.abstractions.2.0.1\lib\net35\xunit.abstractions.dll
+
+
+ ..\packages\xunit.assert.2.3.1\lib\netstandard1.1\xunit.assert.dll
+
+
+ ..\packages\xunit.extensibility.core.2.3.1\lib\netstandard1.1\xunit.core.dll
+
+
+ ..\packages\xunit.extensibility.execution.2.3.1\lib\net452\xunit.execution.desktop.dll
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+ {3bf11d95-1a17-444f-97a8-5536fcc8c015}
+ TupleStudy
+
+
+
+
+
+
+
+
+ 这台计算机上缺少此项目引用的 NuGet 程序包。使用“NuGet 程序包还原”可下载这些程序包。有关更多信息，请参见 http://go.microsoft.com/fwlink/?LinkID=322105。缺少的文件是 {0}。
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/TupleStudyTest/ValueTupleStudyTest.cs b/TupleStudyTest/ValueTupleStudyTest.cs
new file mode 100644
index 0000000..b635e3c
--- /dev/null
+++ b/TupleStudyTest/ValueTupleStudyTest.cs
@@ -0,0 +1,40 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+using Xunit;
+using Xunit.Abstractions;
+using Xunit.Extensions;
+using Xunit.Sdk;
+
+using TupleStudy;
+
+namespace TupleStudyTest
+{
+ public class ValueTupleStudyTest
+ {
+ private TupleStudy.ValueTupleStudy tupleStudy;
+
+ public ValueTupleStudyTest()
+ {
+ tupleStudy = new TupleStudy.ValueTupleStudy();
+ }
+
+ [Fact]
+ public void ValueTuple_Create_Constructor()
+ {
+ var emptyTuple = new ValueTuple();
+ Assert.IsType(emptyTuple);
+
+ }
+
+ [Fact]
+ public void Test()
+ {
+ ValueTuple aa = new ValueTuple();
+
+ }
+ }
+}
diff --git a/TupleStudyTest/packages.config b/TupleStudyTest/packages.config
new file mode 100644
index 0000000..1548b5e
--- /dev/null
+++ b/TupleStudyTest/packages.config
@@ -0,0 +1,11 @@
+
+
+
+
+
+
+
+
+
+
+
\ No newline at end of file
diff --git a/元组学习.sln b/元组学习.sln
new file mode 100644
index 0000000..616c273
--- /dev/null
+++ b/元组学习.sln
@@ -0,0 +1,31 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio 15
+VisualStudioVersion = 15.0.27428.2043
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "TupleStudy", "TupleStudy\TupleStudy.csproj", "{3BF11D95-1A17-444F-97A8-5536FCC8C015}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "TupleStudyTest", "TupleStudyTest\TupleStudyTest.csproj", "{D8CBDB9A-3EDA-4A6B-BB13-E7765B63717E}"
+EndProject
+Global
+ GlobalSection(SolutionConfigurationPlatforms) = preSolution
+ Debug|Any CPU = Debug|Any CPU
+ Release|Any CPU = Release|Any CPU
+ EndGlobalSection
+ GlobalSection(ProjectConfigurationPlatforms) = postSolution
+ {3BF11D95-1A17-444F-97A8-5536FCC8C015}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+ {3BF11D95-1A17-444F-97A8-5536FCC8C015}.Debug|Any CPU.Build.0 = Debug|Any CPU
+ {3BF11D95-1A17-444F-97A8-5536FCC8C015}.Release|Any CPU.ActiveCfg = Release|Any CPU
+ {3BF11D95-1A17-444F-97A8-5536FCC8C015}.Release|Any CPU.Build.0 = Release|Any CPU
+ {D8CBDB9A-3EDA-4A6B-BB13-E7765B63717E}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+ {D8CBDB9A-3EDA-4A6B-BB13-E7765B63717E}.Debug|Any CPU.Build.0 = Debug|Any CPU
+ {D8CBDB9A-3EDA-4A6B-BB13-E7765B63717E}.Release|Any CPU.ActiveCfg = Release|Any CPU
+ {D8CBDB9A-3EDA-4A6B-BB13-E7765B63717E}.Release|Any CPU.Build.0 = Release|Any CPU
+ EndGlobalSection
+ GlobalSection(SolutionProperties) = preSolution
+ HideSolutionNode = FALSE
+ EndGlobalSection
+ GlobalSection(ExtensibilityGlobals) = postSolution
+ SolutionGuid = {0F5943F5-6470-4B04-8D36-8138A25CEA55}
+ EndGlobalSection
+EndGlobal