• How to use the. Net core option mode [options]


    ASP.NET The core introduces the options mode, which uses classes to represent the relevant setting groups. In short, it is to use strongly typed classes to express configuration items, which brings a lot of benefits. The dependency injection of the system is used, and the configuration system can also be used. It enables us to […]

  • Detailed explanation ASP.NET Options mode of core3.0 configuration


    The previous chapter talked about the usage and internal processing mechanism of configuration, ASP.NET The core also provides an options mode. 1、 Use of options The previous chapter has an example of binding a configuration to a theme instance. That is, when using the corresponding configuration, you need to perform a binding operation. The options […]

  • Centos7 install mongodb 4.2.9 and PHP extension


    Visit mongodb website https://www.mongodb.com/try/download/community , there are options on the right. Here, select centos7 + tgz + 4.2.9. [[email protected] src]# wget https://fastdl.mongodb.org/linux/mongodb-linux-x86_64-rhel70-4.2.9.tgz –2020-09-29 15:01:18– https://fastdl.mongodb.org/linux/mongodb-linux-x86_64-rhel70-4.2.9.tgz Resolving host fastdl.mongodb.org ( fastdl.mongodb.org )…,,, … Connecting fastdl.mongodb.org ( fastdl.mongodb.org )| |: 443… Connected. HTTP request issued, waiting for response… 200 OK Length: 132776427 (127m) [application […]

  • C × four operations and the selection of provinces and cities, and the selection of days and months


    using System; using System.Collections.Generic; using System.ComponentModel; using System.Data; using System.Drawing; using System.Linq; using System.Text; using System.Threading.Tasks; using System.Windows.Forms; namespace WindowsFormsApp { public partial class Form1 : Form { public Form1() { InitializeComponent(); Button1. Text = “if syntax calculation”; Button2. Text = “switch syntax calculation”; Label2. Text = “province”; Label3. Text = “city”; } private void […]

  • Solutions to the problem of missing multiple system selections at startup that renders a system unusable


    Well, Xiaobian finds that it’s useless for conservative guys to guide them. There are many reasons why they don’t want to upgrade. It doesn’t matter. If you don’t want to experience Windows 10 for a long time or want to go back to Windows 7, there’s no need to re-install or downgrade it. Do you […]