.Net Core

At the same time as starting your own system, you always want to make the system more flexible, so that others can be easily involved. This requires a complete plug-in system, today, I am going to write an article in the plug-in framework series,

1. ASP. NET attributes:Get Server computer name: Page. Server. ManchineNameGet User information: Page. UserObtain the client computer name: Page. Request. UserHostNameObtain the Client IP Address: Page. Request. UserHostAddress 2. Network

This problem occurs when the table is deleted in cascade mode. An error occurs when a primary key information is deleted. Because there are foreign key information, a trigger is used to delete all the information.  create trigger trigCategoryDelete (

Exception information: failed to retrieve components whose CLSID is {00024500-0000-0000-C000-000000000046} in the COM class factory because of the following error: 8000401a. Note: Because the exported Excel template is too complex, you can use the

I. Problem description: Recently, a specific request (. report) for response interfaces, of course, IHttpHandler is implemented for processing. To implement the IHttpHandler interface, you must implement the two methods: ProcessRequest (HttpContext

The previous article complained about the design of ASP. NET FormsAuthentication and the design of HttpContext. If the ASP. NET program runs in IIS integration mode, in Application_Start () of Global. asax, you only need to access Context. Request,

This period of time has been busy with projects, consisting of several layers of DAL + WCF + WinForm. MySQL + MySQL. Data. dll Driver used by the database. However, the following errors are often encountered during use:An error occurred while

Recently, I want to create a project: music player. General UI: Click the "X" icon on the right to delete the selected song. Because the real interface code is copied, And the predecessors use concatenated strings, and then bound to the page. The

  1. Execute the Stored Procedure SqlConnection conn = new SqlConnection (); // establish a connection     Conn. ConnectionString = Config. ConnStr; // connection string     Conn. Open (); // Open the connection SqlCommand cmd = new SqlCommand ();

  Net supports the reflection function, it really makes our Net program shine, it is amazing, just need to input strings to complete the function. it can be said that the introduction of the reflection function makes us more comfortable in dealing

  Differences between Application objects and Session objects The Application object is multi-session, multi-page The Session object is a single Session, multi-page The value stored in the Session object can be accessed throughout the user

    . Net database access technology   Database Access Technologies in windows include ODBC (Open Database Connection), DAO (Data Access Object), RDO (Remote Data Object), JDBC (java database connection ), ole db (Object link embedded database), ADO

  Template Method mode: Defines the skeleton of an algorithm in an operation, and delays some steps to the subclass. The Template Method allows the subclass to redefine certain steps of an algorithm without changing the structure of an algorithm.    

    I remember the interviewer asked me this question during an interview: "Let's talk about your understanding of viewstate ."   My answer at the time was: "I rarely use viewstate. In general, I choose to disable viewstate"   I don't know if I am

1. Summary During program Development, we usually test in Visual Studio. By default, we use Visual Studio Development Server (Cassini). This makes Development and testing easier, however, it may not work properly on IIS. Therefore, the result may be

  When using. net to develop desktop applications, client deployment is the biggest headache for the majority of users. Based on. net 2.0 winfrom program because the distribution package size of the Framework is about 20 mb, unfortunately, if the

  In the previous article, we introduced the Filter types of asp.net MVC and the call time point. today, let's take a look at the call details of ActionFilter/ResultFilter and the amazing code implementation in the source code. first, we can see

  Problem When sorting and paging are not enough to help users find the results they want, another way to help users find the results they want is to filter according to special rules. Solution New links can be added to allow filtering by conditions

    After writing so many articles, I believe that readers should have a certain understanding of dynamic controls. The following describes the forms commonly used by enterprises by dynamically generating controls. At present, the use of dynamic

  Topic: MVC Mode   1. History of MVC: The concept of MVC (model-view-controller) was used in 1970s. MVC was proposed from the Smalltalk project. Therefore, the original MVC pattern contains very good details that are closely related to the specific