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原创 https请求出现SSL证书啥的错误增加下面的

https请求出现SSL证书啥的错误增加下面的4.0 以上 SecurityProtocolType.Tls | SecurityProtocolType.Tls11 | SecurityProtocolType.Tls124.0 ServicePointManager.SecurityProtocol = (SecurityProtocolType)(0xc0 | 0x300 | 0xc00);

2020-08-20 09:33:12 307

原创窗体线程异步完成通知

button1.Enabled = false; Task.Factory.StartNew(() => { int i = 0; while (i<3) { Thread.Sleep(3 * 1000); i++; } ...

2020-06-28 17:33:27 161

原创 c# 缓存内存缓存数据，业务控制

程序重新启动丢失 MemoryCache.Default.Set(order.OrderId, 实体类或者字符串, 失效时间DateTime);if (MemoryCache.Default.Contains(order.OrderId))//判断当前程序缓存主键是否存在 { Order orders = (Order)MemoryCache.Default.Get(...

2020-05-30 11:56:34 693

原创 c# XML 实例类转换返回XML

[XmlRoot(ElementName = "Response")] public class BackBankInfo { public ResponseData Data { get; set; } public override string ToString() { return CommonUtil.GetXml(this, Encoding.UTF8); } } [X...

2020-05-30 11:46:13 537

原创 c# 服务器关闭了本应保持活动状态的连接解决

首先不要用WebClient下面自己提炼方法try { var bytes = enc.GetBytes(args); ServicePointManager.ServerCertificateValidationCallback = CheckValidationResult; var request = (HttpWebRequest)WebRequest.Crea...

2020-05-24 14:55:05 1007

原创 c# 窗体界面线程里复制（委托）

yourControl.Invoke(new ThreadStart(delegate(){ yourControl.Text = str; ==注意，这个str就是Form1主线程中的变量 }));

2019-10-19 16:31:06 141

原创 c# 原子累加器

public static int ActivityCount;Interlocked.Increment(ref ActivityCount); ++Interlocked.Decrement(ref ActivityCount); --并发限制

2019-10-19 16:30:19 1018

原创数据库连接数满了,报签名错误什么都加这个,200看情况,别把别人搞的也没连接数了.

<connectionStrings> <add name="ConnectionString" connectionString="Server=127.0.0.1;user id=root;password=123;port=3306;database=bank;charset=gb2312;pooling=true;minpoolsize=0;maxpoolsize...

2019-10-19 16:26:57 279

原创 c# winform弹出框确定取消

if (MessageBox.Show("确定删除", "确认", MessageBoxButtons.OKCancel, MessageBoxIcon.Question) == DialogResult.OK) { 确定执行的内容 }

2019-10-19 16:24:23 687

原创 json序列化方法 Newtonsoft.Json

JObject codeJson = JObject.Parse(queryResult);string code = codeJson["returnCode"].ToString();var BackContent = Request.Content;//请求内容 string jsonContent = BackContent.ReadAsStringAsy...

2019-10-19 16:06:12 182

转载保存请求cookie 读取cookie

using System.IO;using System.Net;using System.Runtime.Serialization.Formatters.Binary;namespace ConsoleDemo.Common{ public class CookieUtils { public static void Seriali

2017-10-11 15:02:00 534

转载 winform窗体2 在父级中间显示

Form2 f2 = new Form2();f2.StartPosition = FormStartPosition.CenterParent; ///这是f2.ShowDialog();//这是窗体最前

2017-10-11 14:57:38 511

转载 Comobox下拉框赋值 1个名字1个值

string nameB = gameSerVersL["serverName"].ToString();string codeB = gameSerVersL["serverCode"].ToString();comboBoxServiceName.Items.Add(new NameCode(nameB, codeB));comboBoxServiceName.SelectedIn

2017-10-11 14:56:25 399

转载 .net DateTime 时间时间戳

System.DateTime.Now.ToString("yyyyMMddHHmmss"); 年月日24小时分秒》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》》 System.DateTime startTime = TimeZone.CurrentTimeZone.ToLocalTime(new System.D

2017-10-11 14:55:26 1446

转载 .net json字符串取值

JObject submitOrderRespJsonObj = JObject.Parse(queryOrderRespResult.DataView.ResponseReport);int errCode= submitOrderRespJsonObj["errCode"].Value();//取到一级标签值 josnstring status = submitOrd

2017-10-11 14:54:14 1264

转载 linq+lamda list筛选

查询满足条件的map 重新放到list里List> sss = new List>();var a1 = sss.Where(a => a["aa"].ToString() == "sss").ToList>() ;

2017-10-11 14:53:07 935

转载 HtmlAgilityPack 去网页返回内容

引用这个类HtmlAgilityPack最简单的写法//声明HtmlAgilityPack.HtmlDocument doc = new HtmlAgilityPack.HtmlDocument();//加载页面htmldoctd.LoadHtml(filePrintHttp);获取input属性为name='remark'的 value 值s

2017-10-11 14:51:20 773

转载 .net ftp上传文件

C# ftp上传，参考如下： /// /// 上传文件/// /// 需要上传的文件 /// 目标路径/// ftp地址 /// ftp用户名 /// ftp密码public static void UploadFile(FileInfo fileinfo, string targetDir, string hostname, string username

2017-10-11 14:50:45 1025