Knowledge points to learn about Windows programs

The first thing we will be unfamiliar, we slowly to understand it will understand, let me take you together to understand it.

　　

A form is one of the most basic form classes defined by the. Net Framework, with form basic properties and methods

Property	Description
MaximizeBox	Determines whether the upper-right corner of the form's title bar------ has a maximized box -----------default to True
ShowInTaskbar	Determines whether the form appears in the----------taskbar ------Default to True
StartPosition	Determine where the form first appears----------
WindowState	Determine the status of the form's start
FormBorderStyle	After startup, the user can drag the form size with the mouse---------------set the value to FixedSingle
Method	Description
Close ()	Close the form
Show ()	Show form
Showdialong ()	Modal Display Form
Hide ()	Hide Form

Two. Basic controls

Label----------------------------------eg. user name

A text box (textbox)------A blank box-------------------

Property	Description
MaxLength	Specifies the maximum number of characters entered in the text box
Multiline	whether multiple lines of text can be entered in the text
PasswordChar	Password box
ReadOnly	Read-only cannot be changed

Combo Box (ComboBox)----------------eg. Login type, admin and user

Properties	Description
items	combo box Items
dropdownstyle	allow user to edit text box
selectedindex	Current selection The index number of the fixed item, starting with 0
selecteditem	get currently selected items
events     &NBS p;	description
click	When you click the control Occurs
selectedindexchanged	occurs after the SelectedIndex property is modified
method	Description
Add ()	Add Item
Clear ()   & nbsp &NBSP	Remove all items
Remove ()	Remove the specified item

Button--------------

Property	Description
Enable	Boolean value that indicates whether the control can be used

message box (MESSAGEBOX)

In Windows , a message box is a MessageBox object , and if you want to create a message box, you need to use the MessageBox.Show () method .

There are four types of commonly used message boxes .

01.messagebox.show (The string to display );

02.messagebox.show (The string to display , the caption of the message box );

03.messagebox.show (The string to display , the message box caption , the message box button );

04.messagebox.show (The string to display , the message box caption , the message box button , the message box icon );

Eg:MessageBoxButton.AbortRetryIgnore

Messageboxbutton.ok

Messageboxbutton.okcancel

Messageboxbutton.retrycancel

Messageboxbutton.yesno

Messageboxbuttons.yesnocancel

The third parameter , Messagboxbutton, sets the button that the message box displays . You can pass the "." To select the type of button you want .

MessageBoxIcon.Information

Messageboxicon.error

Messageboxicon.exclamation

Messageboxicon.question

Menu bar control (MenuStrip)------------

Toolbar control (ToolStrip)----------------------

Property	Description
Imagescalingsize	The items in the toolbar show the size of the picture
Displaystyle	Set Display picture or text
Imagescaling	Whether to adjust the button or label to show the size of the picture

radio button (RadioButton)--------------

Group Box (GROUPBOX)-------------

Panel--------------------Add student users

Date control (DateTimePicker)-------------------

Property	Description
Value	The date and control values selected by the control

Image List Control (ImageList)----------colordepth (Gets the color depth of the image list)

shortcut menu (ContextMenuStrip)------

Property	Description
Displaystyle	Whether to display text and images
GridLines	Show Gridlines---default value true
MultiSelect	Do not allow multiple selection-----default value False

Picture box control (PictureBox)

A Timer control (timer) in the toolbox-----

Property	Description
Interval	The frequency, in milliseconds, at which the event occurred
Enabled	Whether to raise the event regularly (on or off)
Event	Description
Tick	Events that occur whenever an interval is specified
Method	Description
Start ()	Start timer
Stop ()	Stop Timer

Four. Code parsing

Event: When the user is triggered by a mouse or keyboard to "some specific behavior of the button"

Private void button1_click (object  sender, EventArgs e)        {            this. Close ();        }

Sender--------------is the source of the event

E------------is the event argument (EventArgs) object

A code implementation form in the form closes----------------this. Close ();

This---------is a keyword that represents the current form object

The close ()----------method is a method of form class forms that is used to close the form

Five. The jump of the form

Private void Bulogin_click (object  sender, EventArgs e)        {// method call           From  a=new from (); Show (); // Hide Method this.hide ();      

Knowledge points to learn about Windows programs