ASP.NET Getting Started Random Thoughts on Bode’s Categories and Examples

Author：Eve Cole Update Time：2009-06-30 15:46:02

Internal strength measures a person's martial arts cultivation, and Xiaoyao Sect's Beiming Magic Skill is really a treasure. People who practice this technique have their whole body like a black hole, and they can instantly rob others of their lifetime's practice. They are known as "Beiming Great Skill". "Water does not come from itself" and "all rivers merge into the sea, and the sea accepts all rivers".

But Xu Zhu didn't know that learning this technique required dissipating his original skills, so when he was completely transformed into an empty monk by Wu Yazi, he couldn't help crying loudly. In fact, this move is absolutely understandable. For a martial arts practitioner, internal strength symbolizes accumulation. Although Xu Zhu is a bit stupid, the accumulation of more than 20 years is gone in an instant, which is tantamount to the destruction of the spiritual world.

■ The impact of computing - process-oriented programming thinking

The ancestor of ASP programmers is named von Neumann, and ASP programmers have always lived according to his sincere teachings. ASP programmers have always believed that everything in this world is like a person's life, with a starting point called START and an end point called END. The things he has to deal with are just like in this life, from START to END, there is no turning back.

ASP programmers also believe that everything in this world is like a person's life, divided into different stages, called modules. Each module has to complete a different task: a young man studies, a young man gives birth to a child, a middle-aged man establishes his destiny, and an old man does not have doubts.

ASP programmers also believe that everything in this world is like a person's life, and there are only three ways to move forward: sometimes you stride forward, which is called sequence; sometimes you face choices, which is called branching; sometimes you go around in circles, lingering, which is called branching. cycle.

ASP programmers have always had the motto of "You can't reach a thousand miles without taking small steps", so he accumulates all similar things and remembers them as functions. When encountering the same type of things in the future, he will call the function.

ASP programmers call this way of living "facing procedural programming ideas". What they usually care about most is the model of the process. What they pay most attention to is whether these processes have similar processing processes that can be summarized into functions.

Even when faced with such a small matter as website login, ASP programmers still follow their own beliefs and model the process first, as shown in Figure 4-1, and then call all the previously accumulated functions to carefully weave every step of the process. One link: Doesn’t the user need to submit login data? He used the response.write brush to describe the user-filled page one by one in order; didn't he need to verify the format? He calls JavaScript functions to check the value of each <input> one by one; isn't it necessary to audit the data? After reading the user data, he opened the thick accounts and checked them one by one; didn't he want the results? He either takes the user to jump to a specified page, or calls a function to tell the user not to act like a fool.

So the ASP programmer lives very happily, and he feels that the world is under his control. Although a guy named smlltalk told him that this kind of living method was useless a long time ago, the ASP programmer at that time was just puzzled; another C++ guy came and said he was clumsy, he was just confused; and another JAVA guy came and told him that he was clumsy. Showing off their power in front of them, ASP programmers began to feel hesitant. Until one day, his younger brother, a DotNet programmer, returned from his studies and had a long chat with him. Finally, the ASP programmer was completely shaken. In the dark, he remembered a great man telling him to keep pace with the times. But even though the world is changing, the ASP programmer still can't let go of the inner strength he has accumulated over the years, and it is gone in an instant, which is tantamount to the destruction of the spiritual world. So there are two cries in my heart that are constantly intertwined. Should I die in silence, or should I die in phoenix nirvana?

■ Six Days of Genesis - Object-Oriented Programming Thoughts

DotNet programmers believe in OOP religion, and God is Framework.

On the first day, God said that everything is an object, and objects have identities, states, and behaviors;

So DotNet programmers list all the objects of the Login function in their brains: Login object, Login.aspx page object, login form frmLogin object, prompt message lblMessage object, user name text field txtUserName object, password text field object txtPassword object and login button Twist the btnLogin object.

On the second day, God said that objects with the same characteristics and behaviors are abstracted into classes; an object is an instance of a class;

So DotNet programmers abstracted the username text field object and password text field object into the TextBox class, and the others into Login, Login.aspx, HtmlForm, Label, and Button classes respectively, and instantiated the classes respectively.

On the third day, God said that the same characteristics of objects are abstracted into attributes, and the same behavioral processing is abstracted into methods;

So DotNet programmers defined the instances frmLogin, lblMessage, txtUserName, txtPassword, and btnLogin as attributes of the Login class and defined the method btnLogin_Click.

private void btnLogin_Click(object sender, System.EventArgs e) {
if ((txtUserName.Text=="Sun Erniang")&&(txtPassword.Text=="Cross Slope"))
lblMessage.Text="Warmly welcome the world-famous martial arts superstar Miss Sun Erniang to return to her hometown to investigate investment";
else
lblMessage.Text="Damn, everything is fake these days!";
}

On the fourth day God said, classes must be encapsulated;

So DotNet programmers add public, private, and protected before class identifiers, attributes, and methods respectively.

On the fifth day, God said that classes can be inherited and synthesized;

So DotNet programmers defined Login.aspx as a derived class of Login and added the following statement at the beginning of Login.aspx:

<%@ Page Inherits="WebApplication1.Login" %>

On the sixth day, God said that classes have polymorphism.

So the DotNet programmer said to himself, I don't need it for the time being, and then lay down.

Soon he fell asleep, and only heard his murmuring slowly: On the 6th, I dragged a few controls, defined a few IDs, and added an event processing code. Thanks to the almighty master framework and his loyal servant Visual Studio. , the star-attracting method, so cool!