C#从网址中提取域名地址和获取域名解析的IP
/// <summary>/// 通过域名获得域名解析的IP地址/// </summary>/// <param name="url">网址</param>/// <returns>返回域名解析的IP地址</returns>private string GetYuMingIP(string url){string rIP = string.Empty;string p …
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QQwry.dat纯真IP数据库读取,C#读取
以下是读取QQwry.Dat数据库类库源码下载地址: https://pan.baidu.com/s/1jdv-m1m_cnOcDWYtbwFyxQ 提取码: v6e7using System;using System.Collections.Generic;using System.IO;using System.Linq;using System.Text;namespace QQwry.dat纯真IP数据库读取{public class…
C#文件操作基类
public static class DirFile{#region 检测指定目录是否存在/// <summary>/// 检测指定目录是否存在/// </summary>/// <param name="directoryPath">目录的绝对路径</param>/// <returns></returns>public static bool IsExist…
C#, COM串口通讯基类
串口常用的使用流程1、初始化串口2、打开串口3、发送数据4、接收数据public class SerialCommon{ public SerialPort MySerialPort = new SerialPort(); public string[] GetPortNames() { return SerialPort.GetPortNames();//获取当前计算机的串行端口名…
C#手动代码创建DataTable结构,并添加数据
public DataTable CreateDataTable(){ DataTable dt = new DataTable("testTable");//创建名字testTable的DataTable DataColumn DcAutoId = new DataColumn("tId", typeof(int)); DcAutoId.AutoIncrement = true;//是否自动自增 DcAutoId.AutoIncrementSeed =…
C#截取字符串按字节截取SubString
public static string CutByteString(string str,int len){string result=string.Empty;// 最终返回的结果if(string.IsNullOrEmpty(str)) { return result; }int byteLen=System.Text.Encoding.Default.GetByteCount(str);// 单字节字符长度int charLen=str.Length;// 把字符平…
正则提取邮箱,邮箱正则表达式获取邮箱类型
static void Main(string[] args){string str = File.ReadAllText("1.txt", Encoding.Default);MatchCollection mc = Regex.Matches(str, @"([-a-zA-Z_0-9.]+)@([-a-zA-Z0-9_]+(\.[a-zA-Z]+)+)");foreach (Match m in mc){Console.WriteLine(m.Value);Con…
C#大文件拷贝方法—文件拷贝方法
public static void FileCopy(string source,string target){using (FileStream fileRead = new FileStream(source, FileMode.Open, FileAccess.Read)){byte[] bb = new byte[1024 * 1024 * 5];int r= fileRead.Read(bb, 0, bb.Length);using(FileStream fileWrite=new FileSt…
获取客户端真实IP
/// <summary> /// 取得客户端真实IP。如果有代理则取第一个非内网地址 /// </summary> public static string GetIPAddress{get{var result = HttpContext.Current.Request.ServerVariables["HTTP_X_FORWARDED_FOR"];if (!string.IsNullOrEmpty(resu…
ASP.NET POST请求与获取结果
/// <summary> /// POST请求与获取结果 /// </summary> public string HttpPost(string Url, string postDataStr){HttpWebRequest request = (HttpWebRequest)WebRequest.Create(Url);request.Method = "POST";request.ContentType = "applicat…