CentOS8安装Mongondb 并开机启动
视频讲解地址 https://www.bilibili.com/video/BV1iK411R7ch/mongodb服务端软件下载地址 https://www.mongodb.com/try/download/community我下载的包是mongodb-linux-x86_64-rhel80-6.0.3.tgz 放在了ceontos /opt 目录下解压文件tar -zxvf mongodb-linux-x86_64-rhel80-…
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C# DateTime与时间戳TimeStamp互转
/// summary/// DateTime转时间戳 /// /summary/// param name="dt"DateTime/param/// returns时间戳（秒）/returnspublic static long GetUnixTimeStamp(DateTime dt){ DateTime dtStart = TimeZoneInfo.ConvertTimeFromUtc(new DateTime(1970, 1, 1, …
C# http帮助类
public class HttpHelper{ // Post请求 public string PostResponse(string url, string postData) { try { string result = string.Empty; //设置Http的正文 HttpContent httpContent = new StringContent…
C# 16进制字符串转数字
Int16 i16 = Convert.ToInt16("F74B", 16);//结果为-2229 16位4个字符串长度byte[] bytes16 = BitConverter.GetBytes(i16);//结果为 0x4B 0xF7 低位在前 高位在后int i32 = Convert.ToInt32("F74B0000", 16);//结果为-146079744 32位8个字符串长度byte[] bytes32 …
Centos设置nginx开机自启动
第一步：进入到/lib/systemd/system/目录[root@iz2z init.d]# cd /lib/systemd/system第二步：创建nginx.service文件，并编辑# vim nginx.service内如如下：[Unit]Description=nginx serviceAfter=network.target [Service] Type=forking ExecStart=/usr/local/nginx…
Centos8 安装Nginx
一：安装依赖yum -y install gcc gcc-c++ make libtool zlib zlib-devel openssl openssl-devel pcre pcre-devel(如果)yum install 失败错误：为 repo ‘appstream’ 下载元数据失败 : Cannot prepare internal mirrorlist: No URLs in mirrorlist这是因为在CentOS8.0中默认不…
winForm 窗体单例 (底层显示到上层，任务栏显示出来)
以下核心代码public static Form frm;private void button1_Click(object sender, EventArgs e){ if (frm == null || string.IsNullOrEmpty(frm.Text)) { frm = new Form2(); frm.Show(); } else { frm.WindowState = FormWind…
C# ,.net core获取Request.Form中所有参数，解析所有参数键值对
[HttpPost("Notify")]public string Notify(){ var data = Request.Form; Dictionarystring, string sArray = new Dictionarystring, string(); if (data.Keys.Count 0) { foreach (string k in data.Keys) { sArray[k] …
C# ,.net core 获取httpGet Url中所有参数，解析所有参数键值对
[HttpGet("Return")]public string Return(){ QueryString v = Request.QueryString; if (!string.IsNullOrEmpty(v.Value) && v.Value.Length 1) { string urldata = HttpUtility.UrlDecode(v.Value);//url数据解码 //1.去除第一个前导?字符…
自制WinForm控件，展示图片功能，支持拖放，移动，放大缩小
效果图如下绘制控件代码using System.Drawing;using System.Linq;using System.Reflection;using System.Windows.Forms;namespace WindowsFormsApp2{ public partial class MyPicControl : UserControl { public MyPicControl() { In…