A property can be a named member of a Class (class), struct (struct), interface (interface), and he provides a flexible mechanism to read, write, or compute the value of a private field, which can be considered a member of a public field. But he
Packaging:
is defined as "enclosing one or more items in a physical or logical package". In the object-oriented programming methodology, encapsulation is designed to prevent access to the implementation details. That is, the implementation of the
Webform_1.aspx content is as follows:
User name: Password: Authentication password:
The Webform_2.aspx page is as follows:
The WebForm_1.aspx.cs file is as follows:
Using System; Using System.Collections.
Examples of this article describe efficiency. NET dirty word filtering algorithm. Share to everyone for your reference, as follows:
BadWordsFilter.cs class
Using system;using system.collections.generic;using system.linq;using system.web;using
What is SQL injection?
My understanding of SQL injection is that some people can use malicious parameters input, let the background execute this SQL, and then achieve the purpose of obtaining data or destroying the database!For a simple query
In the case of ASP., most of the security issues raised are from the following three areas:
1. Upload
2. Cross-site
3. Inject
The security issue of uploading is beyond the scope of this article, and this is only a matter of cross-site and injection,
In the Java EE Web Development, there are filter filters, the filter can intercept the specified URL access, and execute the filter method, according to the actual application, modify the request code in the filter, judge the session information,
The example described in this paper is the method of using FileInfo class to implement copy file in C #, in which C # first creates a StreamWriter object writer, which appends text to the file represented by the FileInfo instance srcfile, FileInfo
1: Using Reflection to achieve
public static T deepcopy (T obj) { //If it is a string or value type, it returns the if (obj is string | | obj. GetType (). Isvaluetype) return obj; Object retval = Activator.CreateInstance (obj. GetType ());
C # Quick way to determine whether two pictures are consistent
#region to determine if the picture is consistent///////// Picture one Picture two // consistent public bool Issameimg (Bitmap img , Bitmap BMP) {//Size consistent if (IMG). Width = =
Policy Mode definition:
The algorithm family is defined, separately encapsulated, so that they can replace each other, this mode allows the algorithm to change, does not affect the use of the algorithm of the customer.
The policy pattern contains
Definition: Specifies the kind of object created with the prototype instance, and creates a new object by copying the prototypes.
The prototype pattern is actually creating another customizable object from one object without needing to know the
Decorative mode: Dynamically add some additional responsibilities to an object, and the adornment mode is more flexible than the subclass to increase functionality.
Four characters in decorating mode:
Component class: Component
Specific Component
First, establish a data table Ipstat for storing user information
The user information I store in the Ipstat table only includes the logged-on user's IP (ip_address), IP source (IP_SRC) and logon time (Ip_datetime), the information of the tables I
First, let's start with a few APIs.
_getcwd
Gets the current working directory.
Char *_getcwd ( char *buffer, int maxlen );
Buffer
Storage location for the path.
MaxLen
Maximum length of the path in Characters:char for _GETCWD and
A long fashion is the way to prevent users from deleting it.
A long time ago also use the method to prevent the U disk virus
As shown below
:
The principle of anti-U-disk virus is to create one such file on each disk
Let's take a few win
About writing a program that can fill a hard drive
Let's think about the idea:
First step: Get the logical drive letter
Step Two: Create a file
Step three: File write data
Extension requirements:
One: Hide window
Two: File set as hidden
Use C # To send custom html emails,
To send an HTML-formatted email, set the IsBodyHtml attribute of the MailMessage object to true.The MailMessage class is in the namespace System. Net. Mail.Using System. Net. Mail;Emails in HTML format have been
C # Study Notes 11,
1.List. binarySearch (): BinarySearch () uses a binary search algorithm, which requires that the elements have sorted in order. It is characterized by a negative integer if the elements are not found, bitwise inversion of this
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