• (76) C × WinForm custom control – form validation component


    Official website http://www.hzhcontrols.com premise It’s been 7 or 8 years since I started, I always want to make a set of beautiful custom controls, so I have this series of articles. GitHub:https://github.com/kwwwvagaa/NetWinformControl Code cloud: https://gitee.com/kwwwvagaa/net/winform/custom/control.git If you think it’s OK, please click star to support it Welcome to discuss: Penguins 568015492 Here we are. Order […]

  • How to realize the integration of gray routing and traffic protection based on Nacos and sentinel


    Based on Alibaba Nacos and sentinel, a solution integrating gray-scale routing and traffic protection is released in the latest nepxion discovery version 5.4.0. For details, please refer to: Source page, please visit source pageGuide home page, please visit guide home pageDocument home page, please visit the document home page The nepxion discovery framework, on the […]

  • Sysobjects in SQL Server 2012


    Sysobjects table Each object created in the database (constraints, defaults, logs, rules, stored procedures, etc.) takes up one row in the table

  • dreams7433


    1、 NGX ﹣ http ﹣ referer ﹣ module (block domain name requests from illegal sources), which is configured as follows: location ~.*\. (gif|jpg|png|flv|swf|rar|zip)$ { valid_referers none blocked test.com *.test.com; if($valid_referer) { #return 403; rewrite ^/ http://www.test.com/403.jpg; } } 2、 Httpaccesskeymoudule is configured as follows: Parameter Description: AccessKey on| off module switch Access key_hashmethod md5| SHA-1 […]

  • JS variable promotion


    First, let’s look at the rules of variable promotion     1.Variable declaration and function declaration will be promoted to the top of scope;     2.When the same name appears, the priority is: variable declaration < function declaration < variable assignment  Here’s an example: var foo =function(x, y){ return x – y; } function foo(x, y){ return x […]

  • Windows Server (R12) – configure MySQL remote access


    The work is mainly divided into two parts, one is windows firewall, the other is MySQL itself Windows port remote access In fact, it is to add an inbound rule for a specific port in the windows firewall Control panel → system and security → Windows Firewall Click “advanced settings” in the menu on the […]

  • Eslint + vscode auto format code (2019)


    More articles This paper uses Vue project as an example.When using Vue cli to create a project, you need to select eslint and open the project with vscode after downloading the dependency.Install the plug-in eslint, and then file – > preference – > settings (if the Chinese plug-in package is installed, it should be file […]

  • Data binding library errors caused by obfuscation


    Summary of questions AbstractMethodError: abstract method “androidx.databinding.ViewDataBinding androidx.databinding.DataBinderMapper.getDataBinder(androidx.databinding.DataBindingComponent, android.view.View, int)” The stack is as follows: java.lang.AbstractMethodError: abstract method “androidx.databinding.ViewDataBinding androidx.databinding.DataBinderMapper.getDataBinder(androidx.databinding.DataBindingComponent, android.view.View, int)” at androidx.databinding.MergedDataBinderMapper.getDataBinder(MergedDataBinderMapper.java:74) at androidx.databinding.DataBindingUtil.bind(DataBindingUtil.java:199) at androidx.databinding.DataBindingUtil.inflate(DataBindingUtil.java:130) at androidx.databinding.DataBindingUtil.inflate(DataBindingUtil.java:95) at cn.sintoon.common.adapter.SinRecyclerViewBaseAdapter.onCreateViewHolder(Unknown Source:11) at cn.sintoon.common.adapter.SinRecyclerViewBaseAdapter.onCreateViewHolder(Unknown Source:0) at androidx.recyclerview.widget.RecyclerView$Adapter.createViewHolder(RecyclerView.java:6794) at androidx.recyclerview.widget.RecyclerView$Recycler.tryGetViewHolderForPositionByDeadline(RecyclerView.java:5975) at androidx.recyclerview.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:5858) at androidx.recyclerview.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:5854) at androidx.recyclerview.widget.LinearLayoutManager$LayoutState.next(LinearLayoutManager.java:2230) at androidx.recyclerview.widget.LinearLayoutManager.layoutChunk(LinearLayoutManager.java:1557) at androidx.recyclerview.widget.LinearLayoutManager.fill(LinearLayoutManager.java:1517) at androidx.recyclerview.widget.LinearLayoutManager.onLayoutChildren(LinearLayoutManager.java:612) at androidx.recyclerview.widget.RecyclerView.dispatchLayoutStep2(RecyclerView.java:3924) at […]

  • EMQ x rule engine series (XI) store messages to PostgreSQL database


    Introduction to PostgreSQL database As an important member of the open-source relational database, PostgreSQL boasts that it is the most advanced open-source database in the world. Compared with other open-source relational databases such as mysql, PostgreSQL is a community driven open-source project, which is maintained by more than 1000 contributors around the world. PostgreSQL provides […]

  • Multiple tables associated query of MySQL


    1. internal connection Rule: return common records of two tables Syntax: — grammar 1 Select * from table 1 inner table 2 on table 1. Public field = Table 2. Public field — grammar two Select * from table 1, table 2 where table 1. Public field = Table 2. Public field       […]