The Windows development environment is built:
1. Install the latest vscode,;
2. Install the latest. NET CORE,;
3. Get C # extension in VS Code;
First, create a C # project
1. Open the VS Code and open the pre-defined folder from the command line,
I. Generic overview
Generic classes and generic methods are both reusable , type safe , and efficient , and are not the same as the non-generic classes and methods that correspond to them. Generics are widely used in containers (collections) and in
Many people say that the use of reflection will have a performance problem, it will be more than the direct call how much slower, the following test.
Call vs Reflection Call directly
Here's a demo to verify the performance difference between the
In fact, to achieve the function of returning to the previous page, the main thing is to use JavaScript.
One:
In the source code of the ASP.
Analysis: This is the use of HTML control, through an onclick event, called a method in JavaScript can be.
This article mainly introduces the C # implementation of red envelope function, the use of normal distribution to calculate the amount of red envelopes, with a certain reference value, interested in small partners can refer to
The example of this
1, from the Source:
VCU10 project, using the Noto sans font, is really pretty. But the verification under Win7, its display Korean is garbled, quite headache.
Its interface displays
Degree Niang, have Noto sans also have CJK font, as the name
Null in C # is not the same as null in SQL, and Null in SQL is represented by C # as DBNull.Value.
NOTE: TheSQL parameter cannot accept the null value of C #, and passing NULL will cause an error .
Let's look at an example:
1 SqlCommand cmd=new
Recently a net development friend left, want me to find some about net related interview questions, ready to hug Buddha feet, to meet new challenges.
I quickly find the previous search of the various treasure, test questions, today comb the basic
Many of the company's projects have been used in the early WebForms. But because of business development, the company to the original project to access the mobile side, webservice a bit old, now more popular restful, so I thought of Webapi.
First,
C # 5.0 introduces two keywords async and await, and these two keywords help us to a great extent simplify the implementation code for asynchronous programming, and the task in TPL is very much related to async and await.
Private async void Button1_
This article mainly introduces the C # extension method, combined with the example form analysis of C # extension method of the function, the use of methods and related considerations, the need for friends can refer to the following
This example
By uploading it to a virtual space, you can easily traverse through the various directories and contents of the service, or choose to download it. Hey, everybody don't use it to do bad things oh. This is used as a learning operation for all ASP.
Don't say much nonsense! is the. NET core and. NET Framework speed comparison.
Both use the slowest bubbling sorting algorithm: Sort 100,000 data
Number
. NET CORE (Time consuming)
. NET Framework (time-consuming)
Cdetailview shows the details for a model. The model to be displayed can be either a cmodel or an associative array. Cdetailview configures attributes to determine which properties of the model need to be displayed in what format. Each property can
This article is a small example of developing software using C # for learning to share.
Ideas:
Capture screen pictures.
Gets the range to intercept, that is, the upper-left corner, the lower-right corner coordinate
Fill in the
Project name: Game City (Gamecityssystem)
Source Code GitHub Address:
Development tools: vs2017
Database: mysql5.7
Because the project is currently imperfect, there are some considerations
Initialize MySQL database with "applegamedata.sql"
The class of the model layer is as follows:
public class Order {public int Id {get; set;} Public decimal Amount {get; set;} public string CustomerName {get; set;} public string Status {get; set;} }
Public class
One case for adaptive design under multi-class inheritance and one case for multiple classes
In the Implementation Layer of the CITIC payment channel in the payment center, the class diagram design method for the Interconnection Implementation of
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