目录
一、分部类及其用途
二、实例
再发一个分部类的应用，巩固一下。
一、分部类及其用途
C#中的部分类也被称为分部类。
C#中的部分类是一种将类的定义分成多个部分，每个部分都位于自己的文件中，然后在编译时合并在一起的机制。
部分类的主要用途是将类的实现分散到多个文件中，从而使代码更易于管理和理解。这对于具有大量方法和属性的大型类特别有用，因为它可以使开发人员更轻松地导航和处理代码。
部分类还可用于将类的实现与它的接口或公共API分离。例如，您可以将类的公共方法定义在一个部分中，而将私有方法和实现细节定义在另一个部分中。这可以帮助使类的公共API更清晰和易于使用，同时隐藏实现细节。
二、实例
本实例主要使用分部类来分别记录学生的相关信息，然后在调用时，通过创建的分部类的对象分别为学生的相关属性赋值，并将赋予的值显示在对应的文本框中。
// 使用分部类记录学生信息
namespace _125
{
public partial class Form1 : Form
{
private GroupBox? groupBox1;
private TextBox? textBox8;
private TextBox? textBox7;
private TextBox? textBox6;
private TextBox? textBox5;
private TextBox? textBox4;
private TextBox? textBox3;
private TextBox? textBox2;
private TextBox? textBox1;
private Label? label8;
private Label? label7;
private Label? label6;
private Label? label5;
private Label? label4;
private Label? label3;
private Label? label2;
private Label? label1;
private Button? button1;
public Form1()
{
InitializeComponent();
StartPosition = FormStartPosition.CenterScreen;
Load += Form1_Load;
}
private void Form1_Load(object? sender, EventArgs e)
{
//
// label1
//
label1 = new Label
{
AutoSize = true,
Location = new Point(12, 24),
Name = "label1",
Size = new Size(68, 17),
TabIndex = 0,
Text = "学生编号："
};
//
// label2
//
label2 = new Label
{
AutoSize = true,
Location = new Point(12, 54),
Name = "label2",
Size = new Size(68, 17),
TabIndex = 1,
Text = "学生年龄："
};
//
// label3
//
label3 = new Label
{
AutoSize = true,
Location = new Point(12, 84),
Name = "label3",
Size = new Size(68, 17),
TabIndex = 2,
Text = "出生年月："
};
//
// label4
//
label4 = new Label
{
AutoSize = true,
Location = new Point(12, 114),
Name = "label4",
Size = new Size(68, 17),
TabIndex = 3,
Text = "班 级："
};
//
// label5
//
label5 = new Label
{
AutoSize = true,
Location = new Point(188, 24),
Name = "label5",
Size = new Size(68, 17),
TabIndex = 4,
Text = "学生姓名："
};
//
// label6
//
label6 = new Label
{
AutoSize = true,
Location = new Point(188, 54),
Name = "label6",
Size = new Size(68, 17),
TabIndex = 5,
Text = "学生性别："
};
//
// label7
//
label7 = new Label
{
AutoSize = true,
Location = new Point(188, 84),
Name = "label7",
Size = new Size(68, 17),
TabIndex = 6,
Text = "年 级："
};
//
// label8
//
label8 = new Label
{
AutoSize = true,
Location = new Point(188, 114),
Name = "label8",
Size = new Size(68, 17),
TabIndex = 7,
Text = "班 主 任："
};
//
// textBox1
//
textBox1 = new TextBox
{
Location = new Point(75, 18),
Name = "textBox1",
Size = new Size(100, 23),
TabIndex = 8
};
//
// textBox2
//
textBox2 = new TextBox
{
Location = new Point(75, 48),
Name = "textBox2",
Size = new Size(100, 23),
TabIndex = 9
};
//
// textBox3
//
textBox3 = new TextBox
{
Location = new Point(75, 78),
Name = "textBox3",
Size = new Size(100, 23),
TabIndex = 10
};
//
// textBox4
//
textBox4 = new TextBox
{
Location = new Point(75, 108),
Name = "textBox4",
Size = new Size(100, 23),
TabIndex = 11
};
//
// textBox5
//
textBox5 = new TextBox
{
Location = new Point(248, 18),
Name = "textBox5",
Size = new Size(100, 23),
TabIndex = 12
};
//
// textBox6
//
textBox6 = new TextBox
{
Location = new Point(248, 48),
Name = "textBox6",
Size = new Size(100, 23),
TabIndex = 13
};
//
// textBox7
//
textBox7 = new TextBox
{
Location = new Point(248, 78),
Name = "textBox7",
Size = new Size(100, 23),
TabIndex = 14
};
//
// textBox8
//
textBox8 = new TextBox
{
Location = new Point(248, 108),
Name = "textBox8",
Size = new Size(100, 23),
TabIndex = 15
};
//
// groupBox1
//
groupBox1 = new GroupBox
{
Location = new Point(12, 12),
Name = "groupBox1",
Size = new Size(365, 142),
TabIndex = 0,
TabStop = false,
Text = "学生信息"
};
groupBox1.Controls.Add(textBox8);
groupBox1.Controls.Add(textBox7);
groupBox1.Controls.Add(textBox6);
groupBox1.Controls.Add(textBox5);
groupBox1.Controls.Add(textBox4);
groupBox1.Controls.Add(textBox3);
groupBox1.Controls.Add(textBox2);
groupBox1.Controls.Add(textBox1);
groupBox1.Controls.Add(label8);
groupBox1.Controls.Add(label7);
groupBox1.Controls.Add(label6);
groupBox1.Controls.Add(label5);
groupBox1.Controls.Add(label4);
groupBox1.Controls.Add(label3);
groupBox1.Controls.Add(label2);
groupBox1.Controls.Add(label1);
groupBox1.SuspendLayout();
//
// button1
//
button1 = new Button
{
Location = new Point(302, 160),
Name = "button1",
Size = new Size(75, 23),
TabIndex = 16,
Text = "读取",
UseVisualStyleBackColor = true
};
button1.Click += Button1_Click;
//
// Form1
//
AutoScaleDimensions = new SizeF(7F, 17F);
AutoScaleMode = AutoScaleMode.Font;
ClientSize = new Size(389, 186);
Controls.Add(button1);
Controls.Add(groupBox1);
Name = "Form1";
Text = "使用分部类记录学生信息";
groupBox1.ResumeLayout(false);
groupBox1.PerformLayout();
LoadInfo();//加载学生信息
}
/// <summary>
/// 为分部类中的各个属性赋值
/// </summary>
static void LoadInfo()
{
CommInfo.ID = "0001";
CommInfo.Name = "刘同学";
CommInfo.Sex = false;
CommInfo.Age = 25;
CommInfo.Birthday = Convert.ToDateTime("1985-04-25");
CommInfo.Grade = 3;
CommInfo.Class = 5;
CommInfo.Director = "王老师";
}
/// <summary>
/// 通过访问分部类中的属性显示学生信息
/// </summary>
private void Button1_Click(object? sender, EventArgs e)
{
textBox1!.Text = CommInfo.ID!.ToString();
textBox2!.Text = CommInfo.Age!.ToString();
textBox3!.Text = CommInfo.Birthday!.ToString();
textBox4!.Text = CommInfo.Class!.ToString();
textBox5!.Text = CommInfo.Name!.ToString();
textBox6!.Text = CommInfo.Sex.ToString();
textBox7!.Text = CommInfo.Grade!.ToString();
textBox8!.Text = CommInfo.Director!.ToString();
}
partial class CommInfo
{
/// <summary>
/// 编号
/// </summary>
public static object? ID;
/// <summary>
/// 姓名
/// </summary>
public static object? Name;
/// <summary>
/// 性别
/// </summary>
static object? sex;
public static object Sex
{
get
{
sex = sex switch
{
true => "男",
_ => "女",
};
return sex;
}
set { sex = value; }
}
/// <summary>
/// 年龄
/// </summary>
public static object? Age;
/// <summary>
/// 出生年月
/// </summary>
public static object? Birthday;
}
partial class CommInfo
{
/// <summary>
/// 年级
/// </summary>
public static object? Grade;
/// <summary>
/// 班级
/// </summary>
public static object? Class;
/// <summary>
/// 班主任
/// </summary>
public static object? Director;
}
}
}
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