Step 1: Download and install ICBC personal online banking control.
Please download and install the personal online banking control component of Industrial and Commercial Bank of China. The software will guide you through the installation of the entire certificate driver, control components and system patches. Note: Firefox and Safari browsers do not support online banking assistants and e-security software for the time being.
Step 2: Implement the personal online banking control component of ICBC and start the installation wizard.
Please execute ICBC's personal online banking control module, start the installation wizard, and follow the prompts to download the relevant software.
Step 3: Download the personal customer certificate information. Please log in to China Industrial and Commercial Bank's personal online banking, enter "Security Center -U Shield Management" and download your personal customer certificate information to U Shield in the column of "U Shield Self-download".
Through the above steps, you have completed the system setup of ICBC's personal online banking control components. Please click the login button to log in to personal online banking.
This control element is not a loaded control element during VB loading. What happened? The file storing the loaded form resource is missing, and its extension is (. frx)。 Example: Form 1.frx
What is the loading error of vb dtpicker control component? Version problem
Package your control components and distribute them to users together with the program.
If there is a problem, cover the control element.
There are always errors in loading CAD lines. What happened? There is something wrong with the line file. Has your line file been modified? Maybe the format of the line definition is incorrect.
What's wrong with setting control components in Vs ++2005? Introduction to Visual Basic(VB) 2007-02-1319: 38 Visual Basic (VB) is an event-driven programming language developed by Microsoft, which includes an auxiliary development environment. By any standard, VB is the most widely used language in the world-not only the number of developers who praise VB, but also the number of developers who complain about VB. It comes from the BASIC programming language. VB has a graphical user interface (GUI) and a rapid application development (RAD) system, so it is easy to connect to a database by using DAO, RDO and ADO, or to create ActiveX control components. Programmers can easily use the components provided by VB to quickly create an application.
Development history
199 1 year, Microsoft released Visual Basic 1.0 version. This caused a great sensation at that time. The development of this connection programming language and user interface is called Tripod (sometimes called Ruby), and the original design was completed by Alan Cooper. Many experts believe that the emergence of VB is an epoch-making event in the history of software development. In fact, from our current point of view, the function of VB 1.0 is really too weak; (But recently VB 6.0, VB. NET function is still quite big! )。 But at that time, it was the first "visual" programming software. This makes programmers enjoy it and try to create software on the platform of VB. Microsoft also lost no time in pushing out three versions of VB2.0, VB3.0 and VB 4.0 within four years. Starting from VB3, Microsoft integrated the database driver of ACCESS into VB, which greatly improved the database programming ability of VB. Since VB4, VB has also introduced the idea of object-oriented programming. VB is powerful and easy to learn. Moreover, VB also introduces the concept of "control element", which makes a large number of compiled VB programs can be used directly by us. The DOS version of VB 1.0 is published in 199 1. The development of this connection programming language and user interface is called Tripod (sometimes called Ruby), and the original design was completed by Alan Cooper.
In 2002. NET 2002 (v7.0) came out, in 2003, Visual Basic. NET 2003 (v7. 1), and in 2005, Visual Basic 2005 (v8.0) came out. At the same time, a free simplified version of Visual Basic 2005 and an accelerated version of Visual Basic 2005 are introduced for beginners and students of Visual Basic.
The remarkable advantage of VB 2005 is that you can directly write XP-style buttons and other control elements. But the small program it writes takes up nearly 10MB of memory.
After several years of development, it has become a special development language and environment. Users can quickly create Windows programs with Visual Basic, and now they can write enterprise-level client/server programs and powerful database applications.
VB will attract more praise and criticism, and will continue to be used by users and programmers. It is very suitable for developing user-friendly programs (such as terminal data), but not suitable for developing other programs (such as joint computing programs).
language feature
The central idea of a typical VB program is to make it easy for programmers, whether they are novices or experts. The GUI system used by VB can simply build application programs, but it can also develop quite complicated programs. VB program is a form-based arrangement and combination of visual components, and code is added to specify the properties and methods of the composition. Because some default properties and methods have been defined in the component, programmers can complete a simple program without writing too much code. In the past, the efficiency of VB programs has always been on the desktop, but with the rapid improvement of computer speed, the debate about efficiency has become less and less.
Drag-and-drop technology can be used to add and change window control elements. A toolbox full of control elements is used to display available control elements (such as text boxes or buttons). Each control element has its own properties and events. Default property values are provided when the control component is created, but programmers can also change them. Many attribute values can change with the user's actions and modifications during execution, thus forming a dynamic program. For example, code that can change the position of the control component is added to the window size change event, and the control component will also change its position whenever the user changes the window size during execution. By adding the corresponding code in the text change event in the text box, the program can automatically translate or block the input of certain characters when inputting text.
A VB program can contain one or more forms, or a main form and multiple sub-forms, similar to the appearance of an operating system. Dialog windows with few functions (such as forms without maximize and minimize buttons) can be used to provide pop-up functions.
Components of VB may or may not have a user interface. In this way, the server-side program can handle the added module.
VB uses independent variable calculation for garbage collection, which contains a large number of objects and provides basic object-oriented support. Because more and more groups appear, programmers can choose the library of the expansion package they need. Different from some languages, VB is case-insensitive, but it can automatically convert keywords into standard case state and force variable names of entities at the entrance of the symbol table to follow the writing rules. By default, string comparisons are case sensitive, but this feature can be turned off.
VB makes a large number of external control components have their own living space. Provides a large number of third-party control components for VB. VB also provides methods to create, use and reuse these control components, but it is not easy to create another from one application due to language problems.
school term
When discussing Visual Basic, you often hear the following terms, so it is very helpful to have a basic understanding of these terms.
Control components-Simply put, control components are graphical tools used to construct or construct Visual Basic applications, including forms, buttons, check boxes, list boxes, data control components, table control components, picture control components and so on.
Event-An action triggered by the user or the operating system. Examples of events include keystrokes, clicks, DblClick, time limits, or receiving data from a port.
Method-the code embedded in the object definition, which defines how the object processes information and responds to events. For example, a database object has the basic elements of a method program that opens a recordset and moves from one record to another. It contains attributes that define its characteristics, define its tasks, and identify the events it can respond to. Control components and forms are examples of all objects in Visual Basic.
An object-a control, a form, etc. Can be seen as an object.
Procedure-A code segment written to accomplish a specific task. Procedures are usually used to respond to certain events and can also be used as custom functions of applications.
Attributes-Attributes are specific descriptions of the attributes of the objects that make up the user interface. For example, the size, position, color, width, height, etc. mentioned in the above "object" are all called attributes of control elements. Attributes determine the appearance and sometimes the behavior of an object. Most of the attributes of the object have been predefined in VB, but some attributes need to be defined in the application process. Attributes can provide data for objects and retrieve information from them.
Limitations of VB
Inherit. Both VB5 and VB6 are object-oriented programming languages, but they do not contain inheritance features. VB provides special class functions, but it still can't meet the needs of programmers. VB。 Contains all object-oriented features.
Multi-thread support (VB.Net 2002 and later versions all support multi-thread technology. )
Exception handling. Try-Catch-Finally in VB. In VB, there is only the statement "Go to line when an error occurs".
Support for indicators is very limited.
VB can only support 8-32-bit plastic surgery, and many languages support it infinitely.
VB does not allow storing constant variables in any array.
VB does not support the above functions, and programmers need to construct their own methods to realize similar functions.
debate
Against:
VB is a controversial language: many programmers have strong feelings about the quality of VB programs. Many people think VB is not suitable for them, and it is the language of children and programmers. From the beginning of design, it is a simple language. Some features in C++ and Java do not appear in VB. While feeling the convenience and speed of development, some functions similar to compile-time type checking and declaration checking are turned off by default. While lamenting the usability of VB, some programmers are generally frustrated to see some errors like "undefined type".
Some critics think that the simple features of VB will make it harmful in the future. Many people taught themselves VB, but they didn't learn good programming habits. When VB enters the classroom, students will not learn many basic programming techniques and structures, because many techniques are already included in those components that users can see. There is no need to learn standard programming habits, because VB has the characteristics of visualization, which leads to some inexplicable codes. In addition, the checking of many errors and warnings is turned off by default, which makes it difficult for programmers to find hidden errors. Experienced programmers will turn on these options when programming in VB.
Many critics criticized Microsoft for simply copying the idea of BASIC into VB. Edsger Dijkstra, a famous computer scientist, famously said, "If a student has studied BASIC at the earliest, it is almost impossible for him to learn excellent programming: because these people have given up the hope of nirvana." (Dijkstra has no mercy on Fortran, PL/ 1, COBOL and APL. )
Another joke is: "Real programmers don't use BASIC. Only/kloc-children under 0/2 years old can use it. "
It is not very simple, and the program it develops can only be executed in Microsoft Windows.
It's too big. Visual Studio needs several disks to install. VB programs also need an execution library with the size of 1.4M when executing.
There is an error in the IDE.
VB can't synthesize the basic API of Windows well, and it often uses the "trick" of low-order operation to program. The low-level memory operation of C language is much simpler than VB.
After turning on the computer, it always appears: Loading ~ ~ ~ error, what's the matter? You should have lost the cmifg.cp module, so the system will call the police, but the loss of this module will not affect the execution of the system, so you can enter the system, but you will call the police every time. If it does not appear, you can enter the login file to modify it. It is possible that this module is set to be added automatically at startup. Please try whether this option is available in the startup menu of msconfig, and if so, cancel it directly.
Error loading C: \ Windows \ winsf207.dll. What happened? Download a winsf207.dll on the Internet, and then start to implement it in REGSVR 32 winsf207.dll.
What's wrong with web page loading? Repair your IE with 360. If not, you can change your browser and use roaming.
What's wrong with installing computers in rbcentry.dll? Nothing, it doesn't affect the normal use, just restart and repair it with 360 security guards.