lifesize room system

, and some said to regenerate the form, but regenerated also useless ah, finally saw this sentence: in order to inherit from a form using the Inheritance Selector dialog box, the project containing the form must have been made executable or DLL. To build your project, choose Build from the Build menu. This sentence does not directly provide the most fundamental solution, but look at the red words, executable files or DLLs, I suddenly understand that the focus is not to regenerate the file, but

In the afternoon, before opening the student management system, there was a problem,A little bit of upset or some, but, find the problem, solve the problem,"Object library not registered" sounds very familiar, so I think of "parts" over there,After reviewing and summarizing the methods to solve this problem,1, in the VB environment, direct registration,2, the use of Regsvr32 tool registration,use WIN +R to open the Run window, where you enter:regsvr32

describes the view. There are two ways to create a view. The first method is to create a view in the database according to the database prompts. The second type is to directly write SQL statements to create them. Although I have learned view sentences before, but I have never practiced them manually, let's start with the first sentence. First, right-click "View" and select "New View" The "Add Table" window appears. Select the expected table and click "add" The visualization tables are display

In the computer room charge system, many query forms contain the same function: the data that is queried in the database is displayed in the MSHFlexGrid control, and then the data in the MSHFlexGrid control is exported to the Excel table. Although before the student information management system, but did not relate to this function, so recorded in this, in their

: When an event is given to him, another event is completed at the same time. In the data center reconstruction, When I recharge the recharge table, I will give it an Insert event. The trigger can be used to refine the balance in the card table at the same time. 1. What to do: A trigger is a method that SQL Server provides to programmers and data analysts to ensure data integrity. It is a special stored procedure related to table events. The trigger cannot be executed directly. It can only be tr

,backcardcash,allgetcash,username,thedate)Thinking in the study:1, register need not be associated student entity. 2. Whether the association between SystemUser and card entities is 1:n or N. 3, Systemuserlog can be considered an entity exists. Thinking Harvest:1, in the process of this design, began to like the design. Always thought the code is full of infinite fun, now can coordinate the overall, from the macro design. This process is not about the gain and loss of a city and a pool, but the

In my data room charging system, the most I studied was the Combined Query, because at the first time, I did not make such a Combined Query, but saved some time for simple query. In this article, I want to talk about the problem of passing parameters. At the beginning, I used SQL statements to pass parameters. The SQL statements were written in this way (basicstudentinfo. filename = cmbfieldname. selectinde

Report is the most important thing I feel in my computer room charging system: Calm down. Report use process: download and install grid ++ report --> Design Report Template (this involves the connection between reports and databases) --> Configure the development environment (Vb-project-component-control 'grid ++ report engine5.0 Type Library 'is selected and added to the toolbox .) --> Interaction between

To tell the truth recently, the mood of the small master is not suitable for learning, selfish thinking if it is absorbed in the same review and put a computer progress presumably is very good, but the test for three days or feel good time management reasonable use of time is the king, so the small master and rolled back to refactor, the recent reconstruction have encountered this or that sentimental problem, Left is just a few small problems, but if it is not good management must be a catastrop

Because the data room charging system has many forms and controls, it sometimes needs to operate on multiple objects. In this case, the object set will save a lotCodeQuantity. Code is time, and time is life. The more streamlined, the better the efficiency. 1, Form set Implement a function in the charging system:When a form is opened, other opened forms must be minimized. The implementati

In the daily and weekly check-out sections of the data room charging system, we use reports. Let's first take a look at what the reports are. A report dynamically displays data in tables, charts, and other formats. The formula can be used to indicate: "report = diverse formats + Dynamic Data ". Before there was no computer, there were also reports, which were manually recorded by some tables and simple char

Tags: style os using IO data ar CTI Code timeAfter accepting the three-story idea, SqlHelper is being preached about the number of advantages it brings to our code, the amount of time and energy that the coder spends, and so forth the words of praise. Self is also doubtful, after all, I have no personal experience, so there is no great experience. And now, many times I used the SqlHelper, shuttle between the layers really also realized that it brings us the simplicity, combined with a lot of peo