VISUAL BASIC CONTROL FUNDAMENTALS in .NET framework

Generator QR-Code in .NET framework VISUAL BASIC CONTROL FUNDAMENTALS

VISUAL BASIC CONTROL FUNDAMENTALS
Recognize QR Code JIS X 0510 In .NET Framework
Using Barcode Control SDK for .NET Control to generate, create, read, scan barcode image in VS .NET applications.
Creating Denso QR Bar Code In Visual Studio .NET
Using Barcode encoder for Visual Studio .NET Control to generate, create QR Code image in .NET framework applications.
We now assign the following property values for each object: Object Form1 Label1 Property Caption Caption Font Alignment Caption Font Caption Font Caption Font Caption Font Caption Font Caption Font Caption Font Value Piggy Bank My Piggy Bank MS Sans Serif, 12-point bold 2 Center Pennies: MS Sans Serif, 10-point Nickels: MS Sans Serif, 10-point Dimes: MS Sans Serif, 10-point Quarters: MS Sans Serif, 10-point Half-Dollars: MS Sans Serif, 10-point Total: MS Sans Serif, 10-point (none) MS Sans Serif, 10-point
Quick Response Code Recognizer In Visual Studio .NET
Using Barcode scanner for .NET framework Control to read, scan read, scan image in Visual Studio .NET applications.
Making Barcode In Visual Studio .NET
Using Barcode generator for VS .NET Control to generate, create barcode image in .NET applications.
Label2
Bar Code Reader In VS .NET
Using Barcode recognizer for .NET framework Control to read, scan read, scan image in .NET framework applications.
QR Code ISO/IEC18004 Generation In C#
Using Barcode maker for Visual Studio .NET Control to generate, create QR Code 2d barcode image in VS .NET applications.
Label3
Paint Denso QR Bar Code In .NET
Using Barcode maker for ASP.NET Control to generate, create QR image in ASP.NET applications.
Generating QR Code 2d Barcode In Visual Basic .NET
Using Barcode drawer for .NET Control to generate, create QR Code ISO/IEC18004 image in .NET applications.
Label4
UCC.EAN - 128 Creation In Visual Studio .NET
Using Barcode printer for VS .NET Control to generate, create GTIN - 128 image in VS .NET applications.
Encoding Universal Product Code Version A In .NET Framework
Using Barcode encoder for VS .NET Control to generate, create UPC Code image in Visual Studio .NET applications.
Label5
Print 1D In .NET Framework
Using Barcode creator for Visual Studio .NET Control to generate, create 1D image in .NET applications.
2 Of 5 Standard Creator In .NET
Using Barcode creator for .NET framework Control to generate, create Industrial 2 of 5 image in .NET applications.
Label6
Draw Bar Code In None
Using Barcode maker for Font Control to generate, create barcode image in Font applications.
Create Code-39 In None
Using Barcode drawer for Excel Control to generate, create Code 39 image in Microsoft Excel applications.
Label7
Print EAN-13 In None
Using Barcode generation for Online Control to generate, create EAN-13 image in Online applications.
Decoding European Article Number 13 In VB.NET
Using Barcode decoder for .NET framework Control to read, scan read, scan image in .NET applications.
Text1
Scan Bar Code In VB.NET
Using Barcode Control SDK for Visual Studio .NET Control to generate, create, read, scan barcode image in Visual Studio .NET applications.
Painting Linear In Visual Studio .NET
Using Barcode drawer for ASP.NET Control to generate, create Linear 1D Barcode image in ASP.NET applications.
(Continues on next page)
Barcode Decoder In Java
Using Barcode decoder for Java Control to read, scan read, scan image in Java applications.
Making Universal Product Code Version A In Java
Using Barcode creation for Java Control to generate, create UPC-A Supplement 2 image in Java applications.
AM FL Y
Fig. 4.13
Team-Fly
VISUAL BASIC CONTROL FUNDAMENTALS
[CHAP. 4
Object Text2
Property Caption Font Caption Font Caption Font Caption Font Caption Font Caption Font Caption Font Picture
Value (none) MS Sans Serif, 10-point (none) MS Sans Serif, 10-point (none) MS Sans Serif, 10-point (none) MS Sans Serif, 10-point (none) MS Sans Serif, 10-point Go MS Sans Serif, 10-point Quit MS Sans Serif, 10-point <picture file path and file name >
Text3
Text4
Text5
Text6
Command1
Command2
Image1
Note that the picture selected for the image box (Image1) can be any picture file typically a graphics file having any of the following extensions: .bmp, .dib, .wmf, .emf, .ico, or .cur. The particular path and file name shown in this example (e.g., c:\Clipart\Moneybag.wmf) will vary from one computer to another. Fig. 4.14 shows the Form Design Window after assigning these property values.
Fig. 4.14
CHAP. 4]
VISUAL BASIC CONTROL FUNDAMENTALS
We now add the following assignment statement to the Click event associated with the Go button (double-click on the
Go button to access the event procedures): Text6.Text = 0.01 * Val(Text1.Text) + 0.05 * Val(Text2.Text) + 0.1 * Val(Text3.Text) + 0.25 * Val(Text4.Text) + 0.5 * Val(Text5.Text)
In addition, we add the End statement to the Click event associated with the Quit button. The complete event procedures associated with the command buttons will appear as follows:
Private Sub Command1_Click() Text6.Text = 0.01 * Val(Text1.Text) + 0.05 * Val(Text2.Text) + 0.1 * Val(Text3.Text) + 0.25 * Val(Text4.Text) + 0.5 * Val(Text5.Text) End Sub Private Sub Command2_Click() End End Sub
Fig. 4.15 shows the appearance of the form when the program is executed using the following data: Pennies: Nickels: Dimes: Quarters: Half-Dollars: 12 8 7 5 3
Pressing the Go button shows that the piggy bank contains $3.97. While the program is executing, you may change any of the input values at any time. The new total value will be displayed whenever you press the Go button. Don t forget to save your program files before exiting.
Fig. 4.15
VISUAL BASIC CONTROL FUNDAMENTALS
[CHAP. 4
4.9 SELECTING MULTIPLE FEATURES (CHECK BOXES) Many programs allow the user to select among many different options. That is, the user may select one option, several different options, or no options at all. Check boxes are used for this purpose. Each option has its own check box. A check box is checked (i.e., selected) by clicking on it, or assigning its Value property a value of 1. Hence, for each check box, an If-Then-Else block can be written that tests the value of the check box s Value property, and an appropriate action taken if the value equals 1. The Value property can also be assigned 0 to uncheck the check box, or 3 to gray-out (i.e., deactivate) the check box. The following example illustrates the procedure. EXAMPLE 4.6 SELECTING MULTIPLE FEATURES (MULTILINGUAL HELLO)
In this example we will display the word Hello in one or more foreign languages. The choices are French, German, Hawaiian, Hebrew, Italian, Japanese and Spanish. We will use check boxes to select the particular foreign languages from among the available choices. Each check box will have a corresponding label, which will display the actual greeting.
Fig. 4.16
Fig. 4.16 shows the preliminary control layout. Note that the Form Design Window includes seven check boxes (one for each language), and eight labels (a main title, and a label for each language). In addition, there are two command buttons, one of which initiates or refreshes the display and the other terminates the computation. We now assign the following initial property values: Object Form1 Check1 Check2 Property Caption Caption Font Caption Font Value Multilingual Hello French MS Sans Serif, 10-point German MS Sans Serif, 10-point
(Continues on next page)
CHAP. 4]
Copyright © OnBarcode.com . All rights reserved.