VB.NET tutorial: GUI-Basic Controls

VB.NET GUI

Basic Controls

Label is a control in which icons or uneditable text is displayed.

Textbox is a control in which the user inputs data from the keyboard. This area also can display information.

Button is a control that triggers an event when clicked.

CheckBox is a control that is either selected or unselected.

ComboBox is a drop-down list of items from which the user can make a selection
either by clicking an item in the list or by typing into a box.

ListBox is a control in which a list of items is displayed. The user can make a
selection from the list by clicking on any item. Multiple elements can be selected.

Panel is a container control in which controls can be placed.

PictureBox is a control that allows the user to display images.

Label : common properties and events	Description
Common properties Font Text TextAlign	The font of text to be displayed on the label The text of the label The alignment of the text(left, center, right, bottom, middle, top)
TextBox : common properties and events	Description
Common properties Font Text Multiline ReadOnly	The font of text to be displayed on the textbox The text of the textbox If true, the textbox can accept multi lines of text. If false, the textbox accept a single line of text If true, the text of the textbox cannot be edited. False is the default value of the control.
Common events Keypress TextChanged	This event is triggered when the keyboard is pressed. This event is triggered when the text of the textbox is changed.
Button : common properties and events	Description
Common properties Text	The text displayed on the control
Common events Click	This event is triggered when the button is clicked.
CheckBox : common properties and events	Description
Common properties Checked Text Common events CheckedChanaged	Indicates whether the checkbox is checked The text displayed on the right of the checkbox This event is triggered when the checkbox is checked or unchecked.
ComboBox : common properties and events	Description
Common properties Items	The collection of items of the combobox
Common events SelectedIndexChanged	This event is triggered when an item of the combobox is selected.
ListBox : common properties and events
Common properties Items	The collection of items of the listbox
Common events SelectedIndexChanged	This event is triggered when an item of the listbox is selected.
Panel : common properties and events	Description
Common properties AutoScroll BorderStyle	Indicates whether scroll bars appear when the panel is not big enough to contain controls. Sets the border of the panel.
PictureBox : common properties and events	Description
Common properties Image SizeMode	Set sthe image to display in the picturebox. Controls image sizing and positioning (Values: Normal, StretchImage, AutoSize, CenterImage).
Common events Click	This event is triggered when the picturebox is clicked.

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Posted comments

Phan Neth, CICI, year 3:

Now it is ok teacher. I can connect to database and select data from it. Than you so much teacher !!!!!

04-30-2013

Dara:

Copy and paste the link below to the address box to learn how to connect C and Mysql server:
http://www.worldbestlearningcenter.com/index_files/cpp-tutorial-connect_mysql_database.htm

04-27-2013

Phan Neth, CICI, year 3:

Hello teacher i want to connect C programming language to MySql server but it have problem. When i compile it always error with library " my_global.h
and mysql.h", so how should i do?

04-27-2013

Phan Neth, Year 3 at CICI,:

I have some problem about connection to mysql server. So I hope teacher can help me. Thank !!!!

04-26-2013

Federico:

Output appears the same also this way:

static void Main(string[] args)
{
int[,] myArray = new int[5, 5];
int row, i;
int n = 1;

for (row = 0; row < 5; row++)
{
for (i = 0; i < 5; i++)
{
myArray[row, i] = n;
if (row == 1 && i == 2) Console.Write(" \t");
else Console.Write("{0} \t", n);

if (n!=26) n++;
if((i+1)%5==0) Console.WriteLine("\n");
}
}
Console.ReadLine();
}

04-13-2013

Dara:

Let pointer p point to the index 1 elem (value=2) of the array.
int *p= a+1;
Let pointer q point to the index 6 elem (value=5) of the array.
int *q= a+6;
-Expression q-p is the subtraction of address of the index 6 element and the address of index 1 elem of the array. So, the result is 5.
-Expression *p+*q is the sum of the value of index 1 elem (2) and the value of index 6 elem (5). So, the result is 7.
In conclusion, the output is 57.

03-28-2013

Anushka :

Find the output of following code
main()
{
int a[] = {1,2,9,8,6,3,5,7,8,9};
int *p= a+1; int *q= a+6;
cout<< q-p <<*p+*q; }

03-28-2013

Dara:

Option Explicit
Dim Cn as New ADODB.Connection
Private Sub_Form_Load()
Cn.Open "Provider=SQLOLEDB; Data Source=ServerName; Initial Catalog=DatabaseName;UserID=UserName; Password=Passw"
End Sub
You will need to replace ServerName with the name of your server (installed SQL Server), DatabaseName withe the name of your data file that you want to connect to, UserName with the name of the user to login to SQL Server, and Passw with the password used to login to SQL Server.

03-13-2013

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VB.NET tutorial: GUI-Basic Controls

VB.NET GUI

Basic Controls

VB.NET programming tutorial

Posted comments