C # Forms

This part of the form is the first step in the visualization of the program, from the CMD Black window to the friendly visual interface, VS provides an introduction to practical design methods and procedural methods, and a large number of smart reminders that programmers save a lot of time while doing programs

The first thing to understand is the properties of the form and common common controls that are first understood, and their design actions and program actions.

Events for the form:
Delete Event: The event page inside of the hanging of the event deleted, and then delete the background code inside the event

A panel is a container

1, Label--Text Display tool
Text: Display of words
Value, Assignment: Lable1. Text

2, TextBox--text box
Value, Assignment: TextBox1.Text

3, RichTextBox--Text field

4. Button--buttons
Click events: Double-click the button

5, RadioButton--radio button
Checked property: Whether to select
foreach (Control i in Panel1. Controls)
{
if (i is RadioButton)
{
RadioButton RA = i as RadioButton;
}
}
If you want to group, place the same group of buttons under the same container

6. CheckBox
Checked property: Whether to select
Tag property: can store custom data
If you want to group, place the same group of buttons under the same container

7. listbox--list Box
Show Data:
Specifying a data source for a ListBox
Listnation.datasource = da. Select ();
Specify values to display
Listnation.displaymember = "Name";
Specify the background value value
Listnation.valuemember = "Code";

Take the value of the selected item:
ListNation.SelectedValue.ToString ()
Listnation.selecteditem as nation;//the selected item, the entity object is taken
If you select more than one data check value:
foreach (Nation data in Listnation.selecteditems)
{
MessageBox.Show (data. Code);
}

Set an item selected:
Listnation.selectedindex =-1;
Listnation.selectedvalue = "n090";

8. combobox--drop-down list

9, Datatimepicker--Date selection control
Set Check:
Datetimepicker1.value = Convert.todatetime (SJ);
Datetimepicker1.text = SJ;
Check value:
DateTimePicker1.Value.ToString ("yyyy mm month dd HH:mm:ss:ms")

10, PictureBox
Appearance, image can select a picture path
Behavior, SizeMode can set the picture size layout way

11, Imagelist
Imagelist1.images[n];

12, NotifyIcon

13, MenuStrip

14, ContextMenuStrip

15. tooltip--mouse move in the prompt box

16, ProgressBar--progress bar
Value to set the current progress of the progress bar

C # Forms