C application interface development foundation - form control (5) - grouping control

Group class control

Grouped controls have containers （Panel） Control 、 Group box （GroupBox） Control 、 tab （TabControl） Controls, etc. .

Container controls

Container controls are controlled by System.Windows.Forms.Panel Class provides the . This control is equivalent to a container , The main function is to put other controls together on a panel , Make these controls easier to manage .

Programming , To make a “ Download Explorer ”.

The development steps are as follows ：

1、 First, in the Form1 Add three... To the form Button Control , And modify the Text attribute ; Then add one more Panel Control , And add the Size Property is set to “307,181”.

 

 

 

 

 

 

 

 

2、 Then create three new forms , , respectively, by Regular.cs General form 、Download.cs Download forms and Appearance.cs Appearance form , And add corresponding controls for the three forms . We need to pay attention to , After the new form is completed , They also need to be Size Property is set to “307,181”.

 
Right click , Select Rename .

3、 Last in Form1.cs In file , Add three Button The control of Click event .

 

Before code

  After code ：

The code is as follows ：

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 WindowsFormsApp1
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            Regular myRegular=new Regular();
            myRegular.TopLevel = false;
            this.panel1.Controls.Add(myRegular);
            myRegular.FormBorderStyle= FormBorderStyle.None;
            myRegular.BringToFront();
            myRegular.Show();
        }

        private void button2_Click(object sender, EventArgs e)
        {
            Download myDownload = new Download();
            myDownload.TopLevel = false;
            this.panel1.Controls.Add(myDownload);
            myDownload.FormBorderStyle = FormBorderStyle.None;
            myDownload.BringToFront();
            myDownload.Show();
        }

        private void button3_Click(object sender, EventArgs e)
        {
            Appearance myAppearance = new Appearance();
            myAppearance.TopLevel = false;
            this.panel1.Controls.Add(myAppearance);
            myAppearance.FormBorderStyle = FormBorderStyle.None;
            myAppearance.BringToFront();
            myAppearance.Show();
        }
    }
}

The operation results are as follows ：

Click on , No response ,  Run failed .

Three windows redesigned ：

 

 

 

Run again ：

 

 

 

Group box control

The grouping box control is composed of System.Windows.Forms.GroupBox Class provides the , The function is to provide recognizable grouping for other controls , Multiple single choices can be realized on the same page RadioButton Control . Usually , Use the grouping box to subdivide the form by function .

Tab controls

A tab control is a tab control , In practice It is often used in programming , The function of this control is to combine related components into a series of tab pages .

1、 Add and remove TabControl Control

2、 Add and remove tabs programmatically .