13、 C window form technology and basic controls (3)

1、GroupBox Control

• GroupBox Control is created by System.Windows.Forms.GroupBox Class provides the , The function is to provide identifiable groups for other spaces
• On the same page , Show multiple groups of radio choices RadioButton（ If you do not use this control , There can only be one group of single choices in a single form RadioButton）
• Usually , Use the grouping box to subdivide the form by function , for example ： A student is choosing a class and department , To subdivide the form , You can use two GroupBox Control to set , use Text Attribute to achieve the purpose of grouping prompts .

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 _27GropuBox Control 
{
    
    public partial class Form1 : Form
    {
    
        public Form1()
        {
    
            InitializeComponent();
        }

        private void btmsubmit_Click(object sender, EventArgs e)
        {
    
            string mystr = "";
            foreach (Control ourctrl in groupBox2.Controls)   //controls Represents a collection of controls 
            {
    
                if (ourctrl is RadioButton)  // Determine the control type 
                {
    
                    if (((RadioButton)ourctrl).Checked)   // The result of traversal is ordinary control , Cast to RadioButton Then judge whether it is selected 
                    {
    
                        mystr += " You belong to ：" + ourctrl.Text;

                    }
                }
            }
            foreach (Control ourctrl in groupBox1.Controls)   //controls Represents a collection of controls 
            {
    
                if (ourctrl is RadioButton)  // Determine the control type 
                {
    
                    if (((RadioButton)ourctrl).Checked)   // The result of traversal is ordinary control , Cast to RadioButton Then judge whether it is selected 
                    {
    
                        mystr += "\n Your race is ：" + ourctrl.Text;

                    }
                }

            }
           

            MessageBox.Show(mystr, " The result of the selection is ");
        }
    }
}

2、TabControl Control

• TabControl Control is created by System.windows.Forms.TabControl Class provides the , The function is to combine relevant components into a series of tab pages .

• Multiline Property is used to set whether to display multiline tabs , If false, There are multiple tabs that cannot be displayed at one time , Provide group arrows to view the remaining tabs
  
  

• Appearance Attributes refer to whether the display tab is drawn as a button or a regular think card , This attribute has three values Normal（ Draw as general options ）、Buttons（ Draw as regular buttons ）、FaltButton（ Draw as smooth button ）

• TabControl Control management TabPage aggregate

• add to / Delete TabPage aggregate

  • Right click 【 Add Tab 】 Or select 【 Remove tab 】 Be careful ： The currently selected tab is removed , Instead of the tab you right-click
    
    

  • TabPages Property to add and remove
    
    

  • TabPages Of text Property is used to set the content displayed on the tab

  • SelectedTab Property can determine the current tab . Every time you select a new tab , Will get rid of SelectedIndexChanged event , adopt SelectedIndex Properties and SelectedTab Property to confirm the current selection , You can perform specific processing according to the tab .

• Set up TabControl when , Be sure to see TabPages Or choose TabControl Control properties
• Own attributes ctl+tab（ It can be used ctrl+tab Switch tabs , There is no need to set it separately , With this attribute ）

using System;
using System.Windows.Forms;

namespace _28_TabControl Control 
{
    
    public partial class Form1 : Form
    {
    
        public Form1()
        {
    
            InitializeComponent();
        }

        private void tabControl1_SelectedIndexChanged(object sender, EventArgs e)
        {
    
            MessageBox.Show(" You click on the "+tabControl1.SelectedTab.Text+"\n The index value is "+tabControl1.SelectedIndex.ToString()," The result of your choice ");
        }
    }
}

3、MenuStrip Controls and ContexMenuStrip Control

3.1 MenuStrip Control

• Menu is the main way for users to obtain the main functions and use the program in the studio program , For example, create a new file 、 Open files, etc .
• MenuStrip Control by System.windows.Forms.MenuStrip Class provides , But with the previous MainMenu Control , It is the container of the application menu structure . When creating menus , To give MenuStrip Controls to add ToolStripMenu Object this operation can be completed when setting , It can also be done in code .
  
  

3.2 ContextMenuStrip Control

ContextMenuStrip Control is created by System.Windows.Forms.ContextMenuStrip Class provides . It's also ToolStripMenu Object's container , Used to create the menu displayed by right clicking the form . The main event is response Click event

add to contextMenuStrip

3.3 ToolTip— Tooltip control

Hover over a menu , Prompt menu function
add to ToolTip： Put the control where you need prompt

add to ToolTip Content
choice ToolTip Control of placement position ,

4、ToolStrip Control

• Toolbar is another common way to get the main functions of an application , More intuitive than the menu bar .

• ToolStrip Control use System.Windows.Forms.ToolStrip Class provides the , The function is to create a common toolbar for depression customization , Let these toolbars support advanced user interface and layout functions , Such as docking , floating , Button with text and image , Pull down buttons, etc .

• ToolStrip The property manager of the control, the display position and display mode of the control , yes MenuStrip The foundation of the control （Toolstrip Belong to MenuStrip A kind of ）
  

    - AllowItemRecorder：： The value is True, Allow... At run time Alt+ Drag to move the control position , Otherwise you can't move 
    - Dock： determine ToolStrip Display position , When None You can drag it to the desired position .
    ![ Insert picture description here ](https://img-blog.csdnimg.cn/ea5c9fb1333b461dbcbd2846e63771b9.png?x-oss-process=image/watermark,type_d3F5LXplbmhlaQ,shadow_50,text_Q1NETiBATXd5bGRuamUyMDAz,size_20,color_FFFFFF,t_70,g_se,x_16)
  
    - LayoutStyle：ToolStrip How to display the controls added in , General coordination Doke Use it together 
  

	 - GripStyle： Set the visibility of the handle 

- Items： subset
- ShowItemToolStrip： Set whether to display the control prompt in the toolbar （ Whether to display a prompt on the mouse over toolbar control ）

• stay ToolStrip Many controls can be used in , Such as toolbar Contains buttons 、 Combo box 、 The text box . In addition to these , Toolbars can also contain other controls
  
  
  

5、StatusStrip Control

• The status bar is used to display brief information about the user's status .
• StatusStrip Control ： from System.Windows.Forms.StatusStrip Class provides , It is used to identify the column at the bottom of the dialog box in the application , Usually used to display short information about the current state of the application .
• stay StatusStrip Can be used in ToolStrip Three of the controls introduced in —ToolStripDropDownButton、ToolStripProgressBarhe and ToolStripSplitButton
• Another control is StatusStrip A dedicated , namely StatusStripStatusLable, The function is to use text and images to display the current status information of the application to the user .

There is something wrong with the following code , The line number is not obtained

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 _32_StatusStrip
{
    
    public partial class Form1 : Form
    {
    
        public Form1()
        {
    
            InitializeComponent();
        }

        private void timer1_Tick(object sender, EventArgs e)
        {
    
            toolStripStatusLabel1.Text = DateTime.Now.ToString();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
    
            toolStripStatusLabel1.Text = DateTime.Now.ToString();
        }

        private void textBox1_Click(object sender, EventArgs e)
        {
    
            // The characters in the text are arranged from the first character （ The index value is 0） Began to increase continuously , Calculate the row and column through the index value 
            // Get the index value of the first character of the current line 
            int index = textBox1.GetFirstCharIndexOfCurrentLine();
            // Calculate line number 
            int line = textBox1.GetFirstCharIndexFromLine(index)+1;
            // Count columns 
            int column = textBox1.SelectionStart - index + 1;
            toolStripStatusLabel4.Text = " The first " + line.ToString() + " That's ok , The first " + column.ToString() + " Column ";
        }

        private void textBox1_KeyUp(object sender, KeyEventArgs e)
        {
    
            // The characters in the text are arranged from the first character （ The index value is 0） Began to increase continuously , Calculate the row and column through the index value 
            // Get the index value of the first character of the current line 
            int index = textBox1.GetFirstCharIndexOfCurrentLine();
            // Calculate line number 
            int line = textBox1.GetFirstCharIndexFromLine(index) + 1;
            // Count columns 
            int column = textBox1.SelectionStart - index + 1;
            toolStripStatusLabel4.Text = " The first " + line.ToString() + " That's ok , The first " + column.ToString() + " Column ";
        }
    }
}

Mission implementation

Realize a simple window login

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

        private void Form1_Load(object sender, EventArgs e)
        {
    
            toolStripStatusLabel1.Text = " Welcome to this system , Please log in before using ";
            toolStripStatusLabel2.Text = " Our website ：  Under construction , Coming soon ";
            toolStripStatusLabel3.Text = DateTime.Now.ToString();
            // hide MenuStrip Control 
            menuStrip1.Visible = false;
            toolStrip1.Visible = false;

        }

        private void timer1_Tick(object sender, EventArgs e)
        {
    
            toolStripStatusLabel3.Text = DateTime.Now.ToString();
        }

        private void button1_Click(object sender, EventArgs e)
        {
    
            string name = textBox1.Text;
            string pwd = textBox2.Text;
            if (name == "darly" && pwd == "darly")
            {
    
                MessageBox.Show(" Welcome to the system ", " Login successful ");
                this.panel1.Visible = false;
                this.menuStrip1.Visible = true;
                toolStripStatusLabel1.Text = " welcome " + name + " Log in to this system ";
                toolStripMenuItemShow.Enabled = true;
                toolStripMenuItemHid.Enabled = false;
            }
            else
            {
    
                MessageBox.Show(" Wrong user name or password , Please re-enter ", " Login failed ");
                textBox1.Clear();
                textBox2.Clear();
                textBox1.Focus();
            }
        }

        private void  newly build ToolStripMenuItem_Click(object sender, EventArgs e)
        {
    
            int maxval = 0;
            foreach (Form myform in this.MdiChildren)
            {
    
                int index =Convert.ToInt32( myform.Text.Substring(4, 1));
                if (index > maxval)
                {
    
                    maxval = index;
                }
            }
            registerForm myRegisterForm = new registerForm();
            myRegisterForm.MdiParent = this;
            myRegisterForm.Text = " Registration information " + Convert.ToString(++maxval);
            myRegisterForm.BringToFront();
            myRegisterForm.Show();
        }

        private void  Close the current form CToolStripMenuItem_Click(object sender, EventArgs e)
        {
    
            Form myactiveForm = this.ActiveMdiChild;  // Determine the current window 
            myactiveForm.Close();
        }

        private void  sign out XToolStripMenuItem_Click(object sender, EventArgs e)
        {
    
            DialogResult result = MessageBox.Show(" Please save all files before exiting \n Please confirm whether to exit , To exit, press yes , Please press no to cancel ", " Exit prompt ", MessageBoxButtons.YesNo);
            if (result == DialogResult.Yes) this.Close();
          
        }

        private void toolStripMenuItemCas_Click(object sender, EventArgs e)
        {
    
            LayoutMdi(MdiLayout.Cascade);
        }

        private void toolStripMenuItemVer_Click(object sender, EventArgs e)
        {
    
            LayoutMdi(MdiLayout.TileVertical);
        }

        private void toolStripMenuItemHor_Click(object sender, EventArgs e)
        {
    
            LayoutMdi(MdiLayout.TileHorizontal);
        }

        private void toolStripMenuItemShow_Click(object sender, EventArgs e)
        {
    
            toolStrip1.Visible = true;
            toolStripMenuItemHid.Enabled = true;
            toolStripMenuItemShow.Enabled = false;
        }

        private void toolStripMenuItemHid_Click(object sender, EventArgs e)
        {
    
            toolStrip1.Visible = false;
            toolStripMenuItemHid.Enabled =false;
            toolStripMenuItemShow.Enabled = true;
        }

        private void toolStripButton1_Click(object sender, EventArgs e)
        {
    
            int maxval = 0;
            foreach (Form myform in this.MdiChildren)
            {
    
                int index = Convert.ToInt32(myform.Text.Substring(4, 1));
                if (index > maxval)
                {
    
                    maxval = index;
                }
            }
            registerForm myRegisterForm = new registerForm();
            myRegisterForm.MdiParent = this;
            myRegisterForm.Text = " Registration information " + Convert.ToString(++maxval);
            myRegisterForm.BringToFront();
            myRegisterForm.Show();
        }

        private void toolStripButton2_Click(object sender, EventArgs e)
        {
    
            Form myactiveForm = this.ActiveMdiChild;  // Determine the current window 
            myactiveForm.Close();
        }

        private void toolStripButton3_Click(object sender, EventArgs e)
        {
    
            DialogResult result = MessageBox.Show(" Please save all files before exiting \n Please confirm whether to exit , To exit, press yes , Please press no to cancel ", " Exit prompt ", MessageBoxButtons.YesNo);
            if (result == DialogResult.Yes) this.Close();
        }

        private void toolStripButton4_Click(object sender, EventArgs e)
        {
    
            LayoutMdi(MdiLayout.Cascade);
        }

        private void toolStripButton5_Click(object sender, EventArgs e)
        {
    
            LayoutMdi(MdiLayout.TileHorizontal);
        }

        private void toolStripButton6_Click(object sender, EventArgs e)
        {
    
            LayoutMdi(MdiLayout.TileVertical);
        }

        private void toolStripMenuItemAbout_Click(object sender, EventArgs e)
        {
    
            MessageBox.Show(" This software is produced by self-study network "," System introduction ");
        }
    }
}

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  Mission implementation 
{
    
    public partial class registerForm : Form
    {
    
        public registerForm()
        {
    
            InitializeComponent();
        }

        private void registerForm_Load(object sender, EventArgs e)
        {
    

        }

        string race;
        string language;
        private void button1_Click(object sender, EventArgs e)
        {
    
            foreach (Control outctrl in panel1.Controls)
            {
    
                if (outctrl is RadioButton)
                    if (((RadioButton)outctrl).Checked)
                        race = outctrl.Text;
            }
            foreach (Control outctrl in panel2.Controls)
            {
    
                if (outctrl is RadioButton)
                    if (((RadioButton)outctrl).Checked)
                        language = outctrl.Text;
            }
            MessageBox.Show(" Your registration information is ：\n full name ：" + textBox1.Text + "\n Company ：" + textBox2.Text + " Gender ：" + comboBox1.SelectedItem + "\n Age :" + numericUpDown2.Value + "\n race :" + race + "\n Favorite language :" + language, " Thank you for registering ");

        }
    }
}