vb net for dummies

PreviousArticleI introduced the use of reports that are not restricted by the database in VB, and also agreed to release the. NET version in the future,However, because I have been too busy recently, I have always been jumping tickets.After I started to write the original version, I found that there are similarCode,So I just made a simple modification on the basis of it.Run the following code in vs2003 and

ClassesC # uses the keyword Sealed to do the same thing with the NotInheritable keyword, which classs,vb.net cannot be inherited.vb.net supports all CLS standard information types, and C # adds support for non-positive negative numbers. The following table lists the bases of the two languages and whether they are compatible with the CLS vb.net C# Compatible with CLS Object Object Y String String Y 　 SByte

. Such as:2. Import the Object library (in VB, for example) in your code.1) Add the Imports statement at the front of the code:Imports ProductstructuretypelibImports MecmodImports PARTITFImports Hybridshapetypelib2) Defining CATIA ObjectsOn Error Resume NextDim CATIA as INFITF. ApplicationCATIA = GetObject (, "CATIA. Application ")If Err.Number CATIA = CreateObject ("CATIA. Application ")Catia. Visible = TrueEnd If3) The type of CATIA object to use wh

Vb. NET Create irregular form Montaque (original) In general, the form of an application is a regular, rectangular form. Sometimes for a particular purpose, we want to change the shape of the application form, such as being a MP3 player, a small clock, and so on, which requires "customizing" our Application. In addition, specially shaped forms can sometimes attract the attention of users, making them pay s

WinForm (VB. NET) obtains the username of the current logon, winformvb.net Run Windows Task Manager and view the Users tab. Now all the Users logging on to the computer can be seen. To name Insus. NET, use the WinForm program of VB. NET to get the current user name. The

Similar to Windows, WindowsProgramAnd driver settings are saved in the system registry. The organization of the wince registry is similar to that of the desktop system, including the following four root keys: Hkey_class_root, including file extension information and COM Subsystem Configuration Information HKEY_LOCAL_MACHINE, which contains system, driver, and application configuration information HKEY_CURRENT_USER, which contains the configuration information of the current user Hkey_use

Vb. The Division operators in net have two:/(floating-point division), \ (integer division)The division operator in C # has only one:/(Division)Vb. The division operator in net differs greatly from the division operator in C # , and is differentiated when used.Introduction to the division operator in vb.net (from MSDN)

In the VB version of the room we have been exposed to the export of Excel function, again contact This function has a different understandingFirst, the principle To implement the ability to export Excel, you first refer to the namespace in order to use the methods and classes under that namespaceImports Microsoft.Office.Interop Then you need to create an instance of the classes you need to export in Excel, create an Excel app, workbooks, and tab

VB. NET network connection Function, vb.net connection function ''' ''' IP Ping''' ''' ''' ''' Private Function PingIpOrDomainName (ByVal strIpOrDName As String) As BooleanDim objPingSender As New PingDim objPinOptions As New PingOptions ()ObjPinOptions. DontFragment = TrueDim data As String = theDataDim buffer () As Byte = Encoding. UTF8.GetBytes (data)Dim intTimeout As Integer = 120Dim objPinReply As Ping

class StringBuilder SB = new StringBuilder (); Traverses all paragraphs in the document foreach (Paragraph Paragraph in section. Paragraphs) {for (int i = 0, cnt = paragraph. Childobjects.count; I To read a footnote:Read endnote:"VB.net"Imports spire.docimports Spire.Doc.DocumentsImports Spire.Doc.FieldsImports system.ioimports system.textnamespace Readfootnote_doc Class program Private Shared Sub Main (ByVal args as String ()) Dim document as Docume NT = New document () document. LoadFromFile

This article introduces the program code used in c #, vb.net, and SQL to determine whether the specified date is a leap year. If you need it, refer to this article. The Code is as follows: Copy code Public bool IsLeapYear (int year){If (year {Throw new ArgumentOutOfRangeException ("year", "the year must be a number from 1 to 9999 .");}If (year % 4 )! = 0){Return false;}If (year % 100) = 0){Return (year % 400) = 0 );}Return true;}

, interfaces for calling WindowsAPI functions are generally provided, that is, they can call dynamic connection libraries. Visual C # can call the API functions of the dynamic link library like other development tools .. NET Framework itself provides such a service that allows governed code to call non-governed functions implemented in the dynamic link library, including Windows API functions provided by the operating system. It can locate and call th

When security support was developed with vb.net, a problem was encountered and a hyperlink control was added to the trainingcourses.aspx pagecssclass= "Btn Btn-info"/>Then add a line of code to the TrainingCourses.aspx.vbHlusonline.cssclass = "Btn btn-success" results when compiling the program, error: "' Hlusonline ' is not declared, It could be inaccessible due to its pro Tection level "did not understand the reason for a long day."Later Google for a long time, only to find out because there i

String. Format (C #, VB. NET) I used: String. Format ("string: {0: D5}", 12)"String: 00012" 'occupies 5 places. If not, use 0 instead.String. Format ("string: {0, 5}", 12)"String: 12" 'occupies 5 places. If not, use spaces instead. The right alignmentString. Format ("string: {0,-5}", 12)"String: 12" 'occupies 5 places. If not, use spaces instead and align left. ? String. Format ("string: {0 :#, 0.0000}

A Web System of VB. NET + Asp.net that uses the SQL2000 database. At the beginning, there were dozens of connected users, and there was no problem after the first year of operation. Later, the number of connections increased to about 800. Now, a strange phenomenon occurs occasionally during the operation. When a user logs on, the logon interface is actually another user (most of the users are currently onli

Recently, the log writing function has been used in the project. It is written using VB. NET as follows: Code Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/--> 1 Public Sub writelog () Sub Writelog ( Byval MSG As String ) 2 3 Dim Varapppath As String 4 Varapppath = System. appdomain. currentdomain. setupinformation. a

VB. NET amp; (three-layer + generic) for Combined Query For Combined Query, it is really "difficult". Of course, it is just a joke. Let's talk about how to splice strings by yourself! First, we need to clearly declare an object Layer, define a composite query as an object class, and set "Fields, operators, and composite relationships to the attributes of the object class combinQuery respectively. 'Field 1

VB. NET wait delay function Threading. Thread. Sleep (3000)Application. DoEvents () Sleep (3000) means nothing can be done within 3 seconds.(I don't know if multiple threads are allowed ).Windows. Forms. Application. DoEvents () is a function that gives up control of the program. Generally, DoEvents is added to the loop to give the user a chance to cancel the operation. Therefore, a public variable should

Assume that I have two forms, each of which has two textbox controls: txt1stdata and txt2nddata. How can I synchronize controls in these two forms? Two or ten forms are not important for the problem we are discussing. The problem is the same. The first method is relatively simple. As a matter of fact, it is even easier than directly using a commission. I think sometimes it gives people the feeling of using a knife to kill chickens. First, I create a class that contains the attributes that I want

Using AE to create a bubble prompt box-VB. Net source code Address: http://www.cnblogs.com/wall/archive/2008/07/17/1244942.html ''' ''' Create a text prompt box ''' ''' ''' ''' ''' ''' ''' ''' Public FunctionCreateTextElement (ByVal x As Double, ByVal y As Double, ByValPTextString As String, Optional ByVal pPoint As IPoint = Nothing,Optional ByVal pGraphicsContainer As IGraphicsContainer = Nothing)