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Category: C#

C# is an object-oriented high-level programming language that runs on the .NET Framework released by Microsoft. C# is a safe, stable, simple, elegant, object-oriented programming language derived from C and C++. It inherits the powerful functions of C and C++ while removing some of their complex features (such as no macros and no multiple inheritance). C# combines the simple visual operation of VB and the high operating efficiency of C++. With its powerful operating capabilities, elegant syntax style, innovative language features and convenient component-oriented programming support, it has become the preferred language for .NET development.

Install C # service

https://www.cnblogs.com/zmztya/p/9577440.html

1. Run cmd as an administrator

2. Install windows service

cd C:\Windows\Microsoft.NET\Framework\v4.0.30319 (The path of InstallUtil.e

October 5, 2021By Simo C# C #, installation, serviceLeave a Comment

What is the best way to handle an integer overflow in C #?

Dealing with integer overflow is a common task, but what is the best way to deal with it in C#? Are there some syntactic sugars that are simpler than other languages? Or is this really the best way

October 5, 2021By Simo C# C #, integer, Medium, method, optimal, overflow, Processing, whatLeave a Comment

Outpatient name system series -1. Voice called .NET C #

Recently received a request. A friend’s office needs to make an outpatient call number. The process is as follows: the patient selects a doctor-swipes the ID card to queue-the doctor clicks on the

October 5, 2021By Simo C# C #, calling, Outpatient, series, system, VoiceLeave a Comment

C # in a row of code to implement 18-digit digital timestamps to DateTime

Original text: A line of code in C# realizes the conversion of 18-digit digital timestamp to DateTime

The time stamp data accessed is:

636728674347302002

How to convert it to Date

October 4, 2021By Simo C# @timestamp, bit, C #, code, conversion, DateTime, Implementation, Medium, Number, one lineLeave a Comment

C # format Easyui Tree

public ActionResult Index(
{
CRMEntities db = new CRMEntities();
EasyUIJsonTree root = new EasyUIJsonTree()
Menu
Menu
“Root” menu Trees> list = db.Trees.ToList();
if (list != null && list.C

October 4, 2021By Simo C# C #, easyUi, formatted, TreeLeave a Comment

C # list method stored in the problem

I encountered a bug that has not been resolved by scratching the earplug for a long time. It is necessary to record it.

Now I use a multi-dimensional list.

IListint>> list = new Listint

October 4, 2021By Simo C# C #, List, Medium, method, problem, storageLeave a Comment

C # simulates Windows Keyboard Event

Send keyboard messages 1 [DllImport(“user32.dll”, EntryPoint = “keybd_event”, SetLastError = true)]
2 public static extern void keybd_event(
3 byte bVk, //Virtual key value
4 byte bScan,// Gene

October 4, 2021By Simo C# C #, Event, keyboard, simulation, windowsLeave a Comment

C # – WPF DataBinding verification is ignored

I (believe) I am connecting data binding validation in a textbook way, but it doesn’t work at all.

In the debugger, forever The Validate(object value, CultureInfo cultureInfo) method will not

October 4, 2021By Simo C# C #, DataBinding, Ignore, verification, WPFLeave a Comment

C # datetime.now function detailed

Summary: Detailed explanation of the DateTime.Now function of C#

??? //April 24, 2008
??? System.DateTime.Now.ToString( “D”);
??? //2008-4-24
??? System.DateTime.Now.ToString(“d”);
??? //

October 4, 2021By Simo C# C #, DateTime, datetime.now, detailed explanation, functionLeave a Comment

C # Get two DataTable intersections, parallel, difference

//IEnumerable QOld = vDTOld.AsEnumerable().ToList(); ////Compare the intersection of two data sources //IEnumerable QJJ = vDTOld.Asnum (DTNew.AsEnumerable(), DataRowComparer.Default); ////The inter

October 4, 2021By Simo C# C #, DataTable, Difference, Get, intersection, set, twoLeave a Comment

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