Vb. NET Summary

Watching vb.net video, from the emotional, the biggest harvest is to break the computer in a large number of dll files fear. Knowledge, can only be macroscopic on the simple grasp,vb.net and VB comparative superiority.

Now the way of learning tells me that to contact the previous knowledge, comparative study, so that it can be easier, and can be clear.

VB6.0, as my initial language in learning programming. Because of its rich control, simple operation method, brought me a lot of interest.

Through learning, vb.net is fascinated by its powerful features to learn.

(1) The ability to have erudite is compatible with other languages and can use controls written in other languages like an "active wrench".

(2) also has a garbage collection mechanism, can be processed automatically after a period of time, but also manual control, so that the timely recovery of garbage, make room, so that the program has a high operating efficiency.

(3)The video says "component-based design", which is essentially object-oriented programming. Speaking of this object-oriented,VB6.0can only be object-based-because of its widespread useVB6.0can be difficult to inherit, reuse, and extend, while the controls, functions, etc.vb.netyou haveVB6.0the controls in the toolbox can be inherited, reused, and extended to implement polymorphism. Overall,vb.net BothVB6.0function, it is applicable to the tide of object-oriented programming. Some people say in a figurative way,vb.netis aVB6.0with theC #, and I agree with what I now know about it.

in vb.net video, see sql database connection, in these two words, The teacher simply introduced some database connection and operation principle. This knowledge of the university's video has been carefully explained, as well as in the "Database system principle" for the detailed explanation of the theory. Inside when the teacher mentions the 1nf 2nf Not yet said 3nf 3nf --three paradigms are the basic requirements of database design.

uml This is a language, a communication language; This is a tool to show abstract code logic relationships, A tool for concise expression in graphical language.

it says in the video Software Engineering That's what we always say. Software Engineering , the teacher described in this section the waterfall model, the rapid development model (with "Agile Development" not exactly the same) development process and their respective pros and cons.

Waterfall Model Advantages: can quickly find errors, shortcomings: If you find an error, you need to push back the design after the error.

The advantages of rapid development model: can quickly produce a version to the customer, and then through the customer's evaluation and recommendations for trimming, so and customer exchange more, more can meet the taste, for the impatient customer role more obvious; disadvantage: the development cycle is longer, the cost may be higher, because some initial development of the version, with the final deal to see, There may be a feeling of being irrelevant, which is useless (the actual value is, of course, the same as the 2000 failure experiments before Edison invented the filament).

The feeling of watching the video is still relatively ignorant, the biggest feeling is "principle", but has not yet made clear "so". This is not the same as the usual confused feeling, this feeling is, it sounds very simple, is a matter of course, always give people a kind of-indeed should be so-the feeling. Yes, well, well, nodding a nod, but more and more feeling, it is so, but how to do it? This doesn't know. So, the more I look back, more and more do not understand. One important harvest is "these, these do not know".

For example, to the library, I understand now is "function", "obfuscation" is a set cipher, Code analysis tool sounds like a very good tool, this tool if used for the analysis of large software without participation is particularly efficient, under its lead can quickly to the whole program from macro to micro grasp; DLL file- -Dynamic link library, the use of segmentation ideas, but also the idea of object-oriented. These are only a little bit of understanding, or even understanding is not, more is to know the "do not know", I believe this is an important harvest it. Hang up first and pack up later!

Vb. NET Summary