vb6 book

The main focus is on the Code. As long as you have done database design, there is basically no problem! 1. VB6-> create a program Add reference Project-> reference Microsoft ActiveX Data Objects 2.8 libray (or another version) Microsoft ActiveX Data Objects recordset 2.8 libray (or another version) Create module myconn. bas for database connection) Call to open a database connectionCall openconn Close the database connection (RS is used in use, so it

I was mentally retarded when I logged on as a user today ...... --------------------------------------------------------------------------------- Tip: A Password error is always prompted during logon, Print IIF (TRIM (Rs. Fields ("password") = password, "equal", "not equal ") It took a long time to find out: When designing a database for SQL2000, the string in the field should be designed as a variable length (varchar ), If it is designed to be a char with a fixed length, the database will autom

uses two bytes to store data, while the long integer type uses four bytes to store data (it can certainly process larger integers). The floating point type can have decimal places if the Double Precision Floating Point type is used, however, its operation accuracy is not very accurate, so it is generally not used for scientific, financial, and other operations. I rarely use them in this book, but it should be noted that, in

A review of the changes from VB6 to vb.net When creating a asp.net page, you need to use a compatible one. NET programming language, such as C #, VB. NET or JScript.NET. But there are many important changes from Vb6/vbscript to vb.net, which is the content of this article. Also, if you want to get more information about it, I strongly recommend that you read Microsoft's article: Prepare for the upgrade of

Part 1 Original article: Last month (vol. 2, issue 9), I gave an executive overview of the conversion process, and started looking at converting General VB6 code to VB. net. this month I will finish General conversions, including DLLs, then start on Database conversions. next month, in the final segment, I will cover converting ASP. net web pages, and look at converting to VB. NET 2005 and C #. Nothing is perfect After the conversion wizard

With Microsoft. NET platform, Visual Basic is beginning to become a completely object-oriented language, referred to as vb.net. Although there have been some fundamental changes, the enthusiasm of developers from VB6 to vb.net is still quite high, even for experienced programmers. In this article, I'll list the changes in the Visual Basic language and illustrate them where appropriate. The list here may not be complete, but it already includes most of

Ma JianEmail:[email protected]Home: Http://www.comicer.com/stronghorsePublished: 2016.12.16After I wrote the "Use Modi OCR 21 languages", "Modi in the OCR module" released, it seems that the use of Modi to do OCR more people up. A few days ago at the request of someone, I tried to call the Modi under the VB6, but found a bit of compatibility issues.Because of the MODI of Office 2007 (hereinafter referred to as "MODI 2007", Microsoft's official version

A friend who designs a lot of TV must notice that many animated scenes are beautifully crafted, so can you design a similar scene with VB6, the answer is yes, the following code can slowly draw a random shape, you can set the density of tree trees, and can slowly in this tree "knot" A specified number of red "fruits"--very interesting. (i) Programming principles We can draw "tree trunks and branches" on the form with the appropriate width of the line

Label:Visual VB6 less information, it took a long time to write a query statement First download the driver, I am win7 x64 do not know just started to download a 5.1 x64 driver why not connected, the total hint can not find the driver, download 5.3 32 bit after normal http://dev.mysql.com/downloads/connector/odbc/ Dimcn as NewADODB. ConnectionDimRs as NewADODB. Recordset'defining database connection string variables DimStrcn as String 'defining databa

Tags: VB6 database access additions and deletions change access2003VB6 to Access2003 database additions and deletions is not complicated, can be easily done by ADO object, below is a small example, also shows the use of the ListView control in VB6. Although in the "Visual Basic" list control of the ListView Change, modal dialog box, disable window resizing " VB.net's ListView control has been described in d

In the work, you may encounter the need to migrate the code written in VB to VB. NET, there are a lot of details to deal. Fortunately, after so many years of Internet development, many questions have been answered on the Internet, so you can search for them to solve them. I have also encountered the migration from VB to VB. NET. Now I will summarize the problems encountered and their solutions or alternative methods to facilitate future users. First, let's take a look at this article converting

Can VB6 handle structured exceptions. C ++ builder extends the processing of structured exceptions and supports the _ finally keyword to ensure that the routine has only one exit. It is a very scientific method to handle errors, it demonstrates the profound programming experience and wisdom of C ++ builder developers. VB. NET's imitation of it is the biggest praise for the handling of structural exceptions.See an example of VB. NET structured exceptio

Fortunately, we can use COM components to maximize the functionality of the ASP. You know, anything that can be written in a language such as VB,VC and VJ and other programming languages can be applied to the development of your Web site, which is COM (Component Object model). COM can be used to write objects that can be invoked by ASP. When the programming environment such as VB to complete the compilation of components, it can be placed in the ASP page is called by the ASP. In this article, we

There are several statements that look very much like VB6: Let, Set, LSet, RSet. Let is used for the assignment of general variables: Copy Code code as follows: [let] varname = expression Most of the cases we omit let, directly with the equal value, so that many people do not know the existence of let. Set is used to assign values to objects, to point variables to objects and to increase the reference count of objects, and many p

Crystal Report My first contact with the Crystal Report was in March 2001 when my colleague Comrade Yin Xiaoxiang began contacting the Crystal Report. Crystal Reports (Crystal report 4.6) support only the database in the ACCESS97 format, so set the table and table in the Access2000 format first System, and then convert the table to 97 format, After the 97 database is transferred in the Crystal Report, the relationship between the tables is automatically found in links. Crystal Report in the V

Mmm, haven't written for a long time, how to start .... Talk about the environment ... VB. NET 2005 after that. NET .... First of all thanks: Virtualdesktop (^_^), vbman2003 (family) Two friends support, this code without their help is impossible to complete, for other help friends also express gratitude ~~~~~~ And then what I'm writing about: a game modifier, but it can be used for many games but can't search for memory. Oh.. But can be used to make their own special game modification tools, or

In the process of testing-driven development, writing test cases is cumbersome, but more complicated is the process of testing using the comunit framework, you need to register the name of the test case frequently.Code: ' Return the name of the different test case methods in this test container Public Property Get Itestcontainer_testcasenames () As Variant () ' Todo: add the names of your test methods as a parameter into the Array () function Itestcontainer_testc

'The long ago I wanted to publish an article about the WebBrowser control of VB and the MSHTML editing CONTROL OF THE Dhtmledit/DhtmlSafe web page 'The WebBrowser control is used as an example to show all the web page editing controls for VB6 development. I wrote a simple tutorial on developing advanced Web pages for VB6. 'More and better network + software programming articles please log onto my website ht