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convertdatatypes

十二月 27, 2018

Today found 2 interesting web sites: 1. http://www.convertdatatypes.com/ 2. https://ascii.cl

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ReWriteURL and Redirect in net core 2.1

十二月 18, 2018

Container: public class HomeController : Controller { public IActionResult Index() { //1 and 2 are without changing the URL in broswer //1. HomeController aController = new HomeController(); return aController.About(); //2.//"PageNotFound" must be in Shared view folder. return View("PageNotFound"). //3 other changing the URL return View("Calls"); ...

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Utils in Java

十二月 07, 2018

1.java.lang.System https://docs.oracle.com/javase/tutorial/essential/environment/sysprop.html 2.org.apache.commons.lang.SystemUtils uses it. . getJavaHome().getJavaIoTmpDir().getUserDir().getUserHome() .JAVA_VERSION.OS_NAME.USER_TIMEZONE 3.org.apache.commons.lang.math.NumberUtils http://commons.apache.org/proper/commons-lang/javadocs/api-2.6/org/apache/commons/lang/math/NumberUtils.html 4.org.apache.commons.lang.StringUtils https://commons.apache.org/proper/commons-lang/javadocs/api-2.6/org/apache/commons/lang/StringUtils.html 5.org.springframework.beans.BeanUtils https://docs.spring.io/spring-framework/docs/5.1.3.RELEASE/javadoc-api/org/springframework/beans/BeanUtils.html 6.org.apache.commons.beanutils http://commons.apache.org/proper/commons-beanutils/javadocs/v1.9.3/apidocs/index.html http://commons.apache.org/proper/commons-beanutils/

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JSON & C#

十一月 29, 2018

1. System.Text.Json.Utf8JsonReader ref: https://docs.microsoft.com/en-us/dotnet/core/whats-new/dotnet-core-3-0 https://github.com/ysharplanguage/FastJsonParser#Overview 2. Newtonsoft.Json library using NewTonsoft.Json; //Using Manage NuGet Packages installs Newtonsoft.Json . Cat cat2 = new Cat(){name="hik",age=3}; string s1= Newtonsoft.Json.JsonConvert . SerializeObject (cat2); Cat cat3 = JsonConvert . DeserializeObject <Cat>(JSONstr); string outStr2 = JsonConvert.SerializeObject(cat2); private string CapitalFirstLetter(string s) { try { string rs = char.ToUpper(s[0]) + s.Substring(1); return r...

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center element

十月 06, 2018

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log ClosedXML

九月 26, 2018

Microsoft Visual Studio 1. NuGet Package Manager installs ClosedXML that depends DocumentFormat.OpenXml, ExcelNumberFormat, and WindowsBase. 2.using ClosedXML.Excel; using System; using System.Data; using System.Data.OleDb; using System.IO; 3. read .xlsx file using (var workbook = new XLWorkbook(xlsxfile)) { ... var ws = workbook.Worksheet(1); foreach (var row in ws.Rows()) {if (!row.IsEmpty()){string cell1 = row.Cell(1).GetValue<string>(); object value =row.Cell(1).Value; } } } 4. OpenFileDialog using (OpenFileDialog openFileDialog = new OpenFileDialog()) { ...

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javascript Alert and url query

九月 22, 2018

<!DOCTYPE html> <html> <head> <style> .alert { padding: 20px; background-color: #f44336; color: white; } .closebtn { margin-left: 15px; color: white; font-weight: bold; float: right; font-size: 22px; line-height: 20px; cursor: pointer; transition: 0.3s; } .closebtn:hover { color: black; } </style> </head> <body> <h2>Alert Messages</h2> <p>Click on the "x" symbol to close the alert message.</p> <div class="alert"> <span class="closebtn" onclick="this.parentElement.style.display='none';">×</span> <strong>Danger!</strong> Indicates a dangerous or potentially negative action. </div> </body> </html...

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Assembly in C#

八月 02, 2018

1. using System.Reflection.Assembly System.Reflection.AssemblyName name = System.Reflection.Assembly.GetExecutingAssembly().GetName(); //name is {AssemblyNameInProperties, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null} byte[] key = name.GetPublicKey(); 2. reflection Assembly assem = typeof (ExampleClass).Assembly; // Create an object from the assembly, passing in the correct number // and type of arguments for the constructor. Object o = assem.CreateInstance( "Example" , false , BindingFlags.ExactBinding, null , new Object[] { 2 }, null , null ); // Make a late-bound call to an instance method of the object. MethodInfo m = assem.GetType( "Example" ).GetMethod( "SampleMethod" ); Object ret = m.Invoke(o, new Object[] { 42 }); Console.WriteLine( "SampleMethod returned {0}." , ret); reference: docs.microsoft.com/en-us/dotnet/api/system.re...

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learn Nodejs & Express & MongoDB

七月 24, 2018

Ref: http://lonka.github.io/blog/2016/08/18/ng2/ng2-cli-quickstart/ http://www.imooc.com/article/6179 remove Nodejs del %USERPROFILE%\.npmrc rmdir /s/q "c:\Program Files\nodejs" rmdir /s/q "%APPDATA%\npm" rmdir /s/q "%APPDATA%\npm-cache" 安装 Nodejs v6.2.2(npm3) & Visual Studio Code 安装 npm install -g gulp yo webpack rimraf npm install -g typescript typings angular-cli npm install -g eslint tslint npm install -g angular-cli gulp yo webpack rimraf typescript typings eslint tslint ng new demo1 cd demo1 npm install --- Error: Cannot find module ‘ exists-sync' 这是 1.0.0-beta8 的 issue ng build ng serve (-prod 同时关闭 live Reload) -- http://localhost:4200 -- http://localhost:49152(live Reload ） ng generate component header //直接在「\app\」下加入一個 Component 名為 header ng generate service search ng build // 以下命令可以將專案發行至「 \dist 」中 Ref: http://lonka.github.io/blog/2016/08/18/ng2/ng2-cli-...

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