C# - 随笔分类 - Javi

摘要：cwc/web-page-screensaver: Display a web page as your screensaver (github.com) 阅读全文

posted @ 2021-10-29 09:51 Javi 阅读(66) 评论(0) 推荐(0)

摘要：//获取第一个数据源DataTable DataTable _dtSource = DBHelper.GetDataTable("select top 10 ksdid,user_id,user_pwd from ksd_user_info"); IEnumerable<DataRow> query 阅读全文

posted @ 2021-04-02 10:16 Javi 阅读(1098) 评论(0) 推荐(0)

Do the “StreamWriter.WriteLine()” function need to “lock()”?

摘要：question: i develop a class to write logs. it writes with "StreamWriter.WriteLine()" function. logStream.WriteLine(msgWrite); logStream.Flush(); some 阅读全文

posted @ 2020-07-10 10:15 Javi 阅读(186) 评论(0) 推荐(0)

SQL Server Integration Services C＃脚本任务示例先看前二部分

摘要：Getting started Step 1 - In this example, we are going to create a package programmatically and copy a file from a source to a destination folder. To 阅读全文

posted @ 2020-07-10 09:36 Javi 阅读(303) 评论(0) 推荐(0)

.Net ObjectContext.CreateQuery<T>(String, ObjectParameter[]) Method

摘要：public System.Data.Objects.ObjectQuery<T> CreateQuery<T> (string queryString, params System.Data.Objects.ObjectParameter[] parameters); Examples This 阅读全文

posted @ 2020-07-09 15:31 Javi 阅读(250) 评论(0) 推荐(0)

Bit Calculation

摘要：运算符描述实例 & 按位与运算符：参与运算的两个值,如果两个相应位都为1,则该位的结果为1,否则为0 (a & b) 输出结果 12 ，二进制解释： 0000 1100 | 按位或运算符：只要对应的二个二进位有一个为1时，结果位就为1。 (a | b) 输出结果 61 ，二进制解释： 0011 11 阅读全文

posted @ 2020-06-29 15:43 Javi 阅读(139) 评论(0) 推荐(0)

c# Standard numeric format strings

摘要：Format specifierNameDescriptionExamples "C" or "c" Currency Result: A currency value.Supported by: All numeric types.Precision specifier: Number of de 阅读全文

posted @ 2020-06-05 15:08 Javi 阅读(310) 评论(0) 推荐(0)

c# Custom numeric format strings

摘要：double value; value = 123; Console.WriteLine(value.ToString("00000")); Console.WriteLine(String.Format("{0:00000}", value)); // Displays 00123 value = 阅读全文

posted @ 2020-06-05 15:07 Javi 阅读(414) 评论(0) 推荐(0)

使用 ASP.NET Core 的 gRPC 服务

摘要：将 gRPC 服务添加到 ASP.NET Core 应用 gRPC 需要gRPC包。配置 gRPC 在 Startup.cs 中： gRPC 是通过AddGrpc方法启用的。每个 gRPC 服务通过MapGrpcService方法添加到路由管道。 C#复制 ASP.NET Core 中间件和功能阅读全文

posted @ 2019-10-28 16:12 Javi 阅读(1044) 评论(0) 推荐(0)

gRPC 和 C#

摘要：前些天gRPC 发布1.0 版本，代表着gRPC 已经正式进入稳定阶段。今天我们就来学习gRPC C# 。而且目前也已经支持.NET Core 可以实现完美跨平台。传统的.NET 可以通过Mono 来实现跨平台调用。 GitHub： https://github.com/grpc/grpc gR 阅读全文

posted @ 2019-10-28 16:11 Javi 阅读(1089) 评论(0) 推荐(0)

String.Join Method

摘要：Overloads Join(String, String[], Int32, Int32) Concatenates the specified elements of a string array, using the specified separator between each eleme 阅读全文

posted @ 2018-12-12 16:29 Javi 阅读(356) 评论(0) 推荐(0)

Azure Function & AWS Function With C#

摘要：Using C# with Azure Functions Two important prerequisites need to be met to build Azure Functions applications with C#: As a C# developer, you are alr 阅读全文

posted @ 2018-07-16 10:17 Javi 阅读(583) 评论(0) 推荐(0)

MQTT和WebSocket

摘要：严格来说，MQTT跟WebSocket关系不大。他们不是在一个层级的。 MQTT和TCP、WebSocket的关系可以用下图一目了然：参考资料： http://www.zhihu.com/question/21816631 WebSocket的优势以前，很多网站使用轮询实现推送技术。轮询是在特定阅读全文

posted @ 2018-07-13 08:29 Javi 阅读(1650) 评论(0) 推荐(0)

NetCore WebSocket 即时通讯示例

摘要：1.新建Netcore Web项目 2.创建简易通讯协议 SenderID发送者ID ReceiverID 接受者ID MessageType 消息类型 Text Voice 等等 Content 消息内容 3.添加中间件ChatWebSocketMiddleware 4.在Startup.cs中使阅读全文

posted @ 2018-07-13 08:18 Javi 阅读(2716) 评论(0) 推荐(0)

.NET 即时通信，WebSocket服务端实例

摘要：即时通信常用手段 1.第三方平台谷歌、腾讯环信等多如牛毛，其中谷歌即时通信是免费的，但免费就是免费的并不好用。其他的一些第三方一般收费的，使用要则限流（1s/限制x条消息）要么则限制用户数。但稳定性什么都还不错，又能将服务压力甩出 2.System.Net.Sockets.Socket，也能写阅读全文

posted @ 2018-07-13 08:17 Javi 阅读(1408) 评论(0) 推荐(0)

Announcing the public preview of Azure Dev Spaces

摘要：Today, we are excited to announce the public preview of Azure Dev Spaces, a cloud-native development experience for Azure Kubernetes Service (AKS), wh 阅读全文

posted @ 2018-07-12 09:27 Javi 阅读(301) 评论(0) 推荐(0)

Announcing Microsoft Research Open Data – Datasets by Microsoft Research now available in the cloud

摘要：The Microsoft Research Outreach team has worked extensively with the external research community to enable adoption of cloud-based research infrastruc 阅读全文

posted @ 2018-06-26 09:47 Javi 阅读(410) 评论(0) 推荐(0)

Amazon SNS (Simple Notification Service) Using C# and Visual Studio

摘要：SNS (Amazon Simple Notification Services) Amazon SNS (Amazon Simple Notification Services) is a notification service used to send the notifications to 阅读全文

posted @ 2018-06-26 09:39 Javi 阅读(841) 评论(0) 推荐(0)

Converting PDF to Text in C#

摘要：Parsing PDF files in .NET using PDFBox and IKVM.NET (managed code). Parsing PDF files in .NET using PDFBox and IKVM.NET (managed code). Download sourc 阅读全文

posted @ 2018-05-31 15:02 Javi 阅读(703) 评论(0) 推荐(0)

Working with PDF files in C# using PdfBox and IKVM

摘要：I have found two primary libraries for programmatically manipulating PDF files; PdfBox and iText. These are both Java libraries, but I needed somethin 阅读全文

posted @ 2018-05-31 11:17 Javi 阅读(1291) 评论(0) 推荐(0)

Javi

随笔分类 - C#

公告