variables constants and calculations in visual basic
Chapter 3 Variables, Constants and Calculations
Ngày tải lên :
13/05/2014, 11:31
... object
• Short –sht
• Integer –int
• Long –lng
• Single –sng
• Double –dbl
1
Chapter 3
Variables,
Constants and
Calculations
Programming In
C Shap
©2009
3-2
Variables & Constants
• Variable
– ... Level Variables
Block Level Variables
©2009
3-18
Calculations
• Calculations can be performed using
properties of certain objects, variables,
constants, and numeric literals
• Do Not use Strings ... EventArgs e)
{
int intSoA, intSoB;
Double dblKetQua;
try
{
intSoA = int.Parse(txtA.Text);
intSoB = Convert.ToInt32(txtB.Text);
dblKetQua = intSoA + intSoB;
lblKQ.Text = dblKetQua.ToString();
}
catch...
- 26
- 275
- 0
Define a Class in Visual Basic .NET
Ngày tải lên :
07/11/2013, 15:15
...
define two methods: save and delete. (The retrieve method will be defined in a
subsequent section.) Add the save and delete methods to your interface, as in
Listing 9.7.
Listing 9.7 CustomerInterface9_1.vb: ...
3. Finally, add a ToString method to output all the data of the class in a string. This is
extraordinarily useful for debugging. Your finished interface should look like
Listing 9.8.
Listing ... by limiting the class to
properties representing the columns in the Customers table and to methods that insert,
delete, and update data.
Technique
Visual Basic .NET has a specific kind of...
- 7
- 458
- 0
Tài liệu Data base Access and Management8-1Learn Visual Basic 6 tutorial ppt
Ngày tải lên :
24/02/2014, 11:20
... original Visual Basic for DOS and Visual Basic For Windows were
introduced in 1991.
• Visual Basic 3.0 (a vast improvement over previous versions) was released in
1993.
• Visual Basic ... Workgroups,
Windows NT, or Windows 95
• Applications built using the 32 bit version of Visual Basic 4.0, Visual
Basic 5.0 and Visual Basic 6.0 will only run with Windows 95 or
Windows NT (Version ... 10-14
Using the Windows Clipboard 10-17
Printing with Visual Basic 10-18
Multiple Form Visual Basic Applications 10-21
Visual Basic Multiple Document Interface (MDI) 10-25
Creating a Help...
- 448
- 447
- 0
process engineering and design using visual basic
Ngày tải lên :
01/04/2014, 10:57
... engineering and design using Visual Basic
Numerical methods in linear algebra
Gauss elimination [6]
In this method unknowns are eliminated by combining equations such that
the n equations and ... trademarks, and
are used only for identification and explanation without intent to infringe.
Library of Congress Cataloging -in- Publication Data
Datta, Arun.
Process engineering and design using Visual BASIC ... 27, 2007 11:16 AM
xvi Process engineering and design using Visual Basic
PRV isolation valves 268
Inlet piping to PRVs 270
Discharge piping from PRVs 271
Contingency quantification 272
General...
- 474
- 447
- 0
data structures and algorithms using visual basic.net - michael mcmillan
Ngày tải lên :
17/04/2014, 09:15
... library includes a generic collection class for storing
data. The class includes two methods and two properties for adding, remov-
ing, retrieving, and determining the number of items in the collection. ... Integer,
_
ByVal sValue As Integer) As Integer
Dim index As Integer
For index=0Toarr.GetUpperBound(0)
If (arr(index) = sValue) Then
Return index
End If
Next
Return -1
End Function
The following ... CArray(numItems)
Dim index As Integer
For index=0TonumItems
P1: KSF/ICD
0521547652pre CB820-McMillan-v1 April 21, 2005 16:14
DATA STRUCTURES AND
ALGORITHMS
USING
VISUAL
BASIC
.NET
This is the first Visual Basic. NET...
- 412
- 488
- 0
doing objects in visual basic 2005
Ngày tải lên :
01/06/2014, 01:21
... of the other books in this series, this book is about
designing and developing great applications for Visual Basic using object-
oriented principles. However, today’s Visual Basic developer is ...
parts. And since Visual Basic is now a fully object-oriented programming
language, using an object-oriented approach to thinking about your appli
-
cation makes it easier to map these thoughts into ... make it easier and more natural to work
with string variables.
Understanding how to create an object and call its properties and
methods is crucial to any development with Visual Basic. Chapter...
- 548
- 867
- 0
DATA STRUCTURES AND ALGORITHMS USING VISUAL BASIC.NET potx
Ngày tải lên :
27/06/2014, 11:20
... strings, such as concatenation, returning substrings, inserting
characters, removing characters, and so forth. We examine the String class in
Chapter 8.
VB.NET strings are immutable, meaning ... salary (an integer), and
identification number (a string, or an integer), as well as other attributes.
Since storing each of these data values in separate variables could becoming
confusing very ... within the same method definition. This is accomplished
by utilizing a Get clause and a Set clause. Here are the property methods for
getting and setting x-coordinate and y-coordinate values in...
- 412
- 351
- 0
Professional ASP.NET 3.5 in C# and Visual Basic Part 170 doc
Ngày tải lên :
05/07/2014, 18:20
... 814
WebPartZone controls, dragging
and dropping in, 817
XAML, viewing and editing in,
1612–1617
XHTML in, 1571–1573
XML Web service.
See
XML Web
Services, building
zone layouts, 817
Visual Studio Conversion ... from,
1189–1190
using external style sheets in,
864–865
using inline styles in, 866
using internal style sheets in,
865–866
Web Parts
allowing user to change mode
of page, 820–833
creating custom, ... 1425
in DetailsView control,
349–350
handling errors in GridView
control during, 337–339
IIS 7 dependencies and, 565
LINQ to SQL, 493
in SQL Server, 381–382
using AJAX on Web page, 897
using
pkmgr.exe
to...
- 17
- 675
- 0
Professional ASP.NET 3.5 in C# and Visual Basic Part 2 ppsx
Ngày tải lên :
05/07/2014, 18:20
... Grouping 472
Other LINQ Operators 473
LINQ Joins 473
Paging Using LINQ 475
LINQ to XML 476
Joining XML Data 479
LINQ to SQL 481
Insert, Update, and Delete Queries through LINQ 490
Extending LINQ ... Working with XML and LINQ to XML 497
The Basics of XML 498
The XML InfoSet 500
XSD–XML Schema Definition 501
Editing XML and XML Schema in Visual Studio 2008 503
XmlReader and XmlWriter 506
Using ... ListBox, RadioButtonList, and CheckBoxList 365
TreeView 366
Ad Rotator 366
Menu 367
Inline Data-Binding Syntax 367
Data-Binding Syntax Changes 368
XML Data Binding 369
Expressions and Expression Builders...
- 10
- 460
- 0
Professional ASP.NET 3.5 in C# and Visual Basic Part 3 pptx
Ngày tải lên :
05/07/2014, 18:20
... Rendering 1210
Adding Tag Attributes 1214
Styling HTML 1217
Themes and Skins 1220
Adding Client-Side Features 1222
Detecting and Reacting to Browser Capabilities 1231
Using ViewState 1234
Raising ... applications using mainly Visual
Basic (VB).
Visual Basic was not only a programming language; it was tied to an IDE that allowed for easy thick-client
application development. In the Visual Basic model, ... 1607
Step 1: A Basic ASP.NET Application 1609
Finding Vector-Based Content 1610
Converting Vector Content to XAML 1611
Tools for Viewing and Editing XAML 1614
Integrating with Your Existing ASP.NET...
- 10
- 525
- 0
Professional ASP.NET 3.5 in C# and Visual Basic Part 4 potx
Ngày tải lên :
05/07/2014, 18:20
... snap -in when using Windows XP, or the new IIS interface if
you are using Windows Vista) use the
WebConfigurationManager
class that is also available for building
custom administration tools.
Listing ... 5:02pm Page xlii
Introduction
Expanding on the Page Framework
ASP.NET pages can be built based upon visual inheritance. This was possible in the Windows Forms
world, but it is something that is relatively ... event informa-
tion in a SQL Express file contained within the application. This change can be made by adding a
<
healthMonitoring
> node to your
web.config
file as presented in Listing I-5.
xxxix
Evjen...
- 10
- 586
- 0
Professional ASP.NET 3.5 in C# and Visual Basic Part 5 ppsx
Ngày tải lên :
05/07/2014, 18:20
... ASP.NET, be sure to check out Beginning ASP.NET 3.5: In C# and VB by Imar
Spaanjaars (Wiley Publishing, Inc., 2008) to help you understand the basics.
In addition to working with Web technologies, ... that you understand basic programming
constructs, such as variables,
For Each
loops, and object-oriented programming.
You may also be wondering whether this book is for the Visual Basic developer ... require and shows you how to create a centrally managed look -and- feel for all the pages of
your application by using themes and the skin files that are part of a theme.
❑ Chapters 7, ‘‘Data Binding in...
- 10
- 729
- 0
Professional ASP.NET 3.5 in C# and Visual Basic Part 6 pdf
Ngày tải lên :
05/07/2014, 18:20
... having everything in a single viewable instance makes working
with the ASP.NET page easier. Another great thing is that Visual Studio 2008 provides IntelliSense when
working with the inline coding ... pages
inline. In fact, many page types have options for both inline and code-behind styles. The following table
shows your inline options when selecting files from this dialog.
File Options Using Inline ... the examples in this book use an inline coding model because it works
well in showing an example in one listing. Even though the example is using an inline coding style, it is
my recommendation...
- 10
- 491
- 0
Professional ASP.NET 3.5 in C# and Visual Basic Part 7 ppt
Ngày tải lên :
05/07/2014, 18:20
... Class
C#
using System;
using System.Data;
using System.Configuration;
using System.Linq;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using ... the code-behind model or the inline coding model.
Basically, these directives are commands that the compiler uses when the page is compiled. Directives
are simple to incorporate into your pages. ... the language used for any inline rendering and script blocks.
LinePragmas Boolean
value that specifies whether line pragmas are used with the
resulting assembly.
Src
Points to the source file of...
- 10
- 752
- 0
Professional ASP.NET 3.5 in C# and Visual Basic Part 8 doc
Ngày tải lên :
05/07/2014, 18:20
... page from which any cross-page postings originate. Cross-page
posting between ASP.NET pages is explained later in the section ‘‘Cross-Page Posting’’ and again in
Chapter 17.
The
@PreviousPageType
directive ... Request.QueryString["ThemeChange"];
}
<
/script
>
If you create an ASP.NET 3.5 page and turn on tracing, you can see the order in which the main page
events are initiated. They are fired in ... you simply create an instance of that control type and populate this
instance using the
FindControl()
method from the
PreviousPage
property. The
String
value assigned
to the
FindControl()
method...
- 10
- 547
- 0
