.net 泛型简单应用

①Dictionaryと「自定義クラス」

C#.net:

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Linq;

using System.Text;

using System.Windows.Forms;

namespace WindowsFormsApplication1

{

public partial class Form1 : Form

{

Dictionary<Guid, MyClass> list = new Dictionary<Guid, MyClass>();

public Form1()

{

InitializeComponent();

}

private void Form1_Load(object sender, EventArgs e)

{

MyClass iniData = new MyClass();

iniData.F1 = "aaaaaa";

iniData.F2 = "1";

iniData.F3 = "2";

iniData.F4 = "3";

MyClass iniData2 = new MyClass();

iniData2.F1 = "bbbbbb";

iniData2.F2 = "11111";

iniData2.F3 = "22222";

iniData2.F4 = "33333";

list.Add(Guid.NewGuid(), iniData);

list.Add(Guid.NewGuid(), iniData2);

}

private void button1_Click(object sender, EventArgs e)

{

foreach (var item in list)

{

Console.WriteLine(item.Key.ToString());

Console.WriteLine(item.Value.F1);

Console.WriteLine(item.Value.F2);

Console.WriteLine(item.Value.F3);

Console.WriteLine(item.Value.F4);

}

//var aa = list.Where(p => p.Value.F4 == "33333").ToList() ;

//Console.WriteLine(aa);

}

}

public class MyClass

{

//public string F1;

//public string F2;

//public string F3;

//public string F4;

public string F1 { get; set; }//自動プロパティ

public string F2 { get; set; }

public string F3 { get; set; }

public string F4 { get; set; }

}

}

//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

VB.net:

Public Class Form16

Dim list As New Generic.Dictionary(Of Guid, MyClass)

Private Sub Form16_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load

Dim iniData As New MyClass()

iniData.F1 = "aaaaaa"

iniData.F2 = "1"

iniData.F3 = "2"

iniData.F4 = "3"

Dim iniData2 As New MyClass()

iniData2.F1 = "bbbbbb"

iniData2.F2 = "11111"

iniData2.F3 = "22222"

iniData2.F4 = "33333"

list.Add(Guid.NewGuid, iniData)

list.Add(Guid.NewGuid, iniData2)

End Sub

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click

For Each item As KeyValuePair(Of Guid, MyClass) In List

Console.WriteLine(item.Key.ToString)

Console.WriteLine(item.Value.F1)

Console.WriteLine(item.Value.F2)

Console.WriteLine(item.Value.F3)

Console.WriteLine(item.Value.F4)

Next

End Sub

End Class

' 自定义类

Public Class MyClass

' Public F1 As String

' Public F2 As String

' Public F3 As String

' Public F4 As String

Property F1 As String '自動プロパティ

Property F2 As String

Property F3 As String

Property F4 As String

End Class

' 输出结果

b6156160-790a-401e-800e-b7fab2aa36ca

aaaaaa

1

2

3

78d019f8-a866-42d6-8d35-fc8f8c11ef18

bbbbbb

11111

22222

33333

//////////////////////////////////////////////////////////////////////////////////////////////////////////////

②①Listと「自定義クラス」

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

using System.Windows.Forms;

namespace WFGeneric

{

public partial class Form1 : Form

{

public Form1()

{

InitializeComponent();

}

List<MyClass> myList = new List<MyClass>();

private void Form1_Load(object sender, EventArgs e)

{

MyClass myCls = new MyClass();

myCls.f1 = "カラム１";

myCls.f2 = "カラム２";

myCls.f3 = "カラム３";

myList.Add(myCls);

myCls = new MyClass();

myCls.f1 = "カラム４";

myCls.f2 = "カラム５";

myCls.f3 = "カラム６";

myList.Add(myCls);

}

private void button1_Click(object sender, EventArgs e)

{

List<MyClass> aa =myList.ToList<MyClass>().Where(p => p.f1 == "カラム１" || p.f1== "カラム４" 　).ToList() ;

foreach (var item in aa)

{

var bb = item.f1 + Environment.NewLine + item.f2 + Environment.NewLine + item.f3;

MessageBox.Show(bb);

}

}

}

public class MyClass

{

public string f1 { get; set; }

public string f2 { get; set; }

public string f3 { get; set; }

}

}