DEV Community: twostepdeveloper

How to Install or Uninstall a Windows Service

twostepdeveloper — Thu, 19 Nov 2020 08:17:43 +0000

In this article. I will show how to install or uninstall a Windows Service. this Service is written in .NET using C#.
To install or uninstall Windows Service use the utility InstallUtil.exe.

Follow the steps .
Step 1 : Open the Command Prompt window. (as Administrator)
Press Windows+R to open the “Run” box. Type “cmd” into
the box and then press Ctrl+Shift+Enter to run the
command as an administrator.

Step 2 : Open InstallUtil.exe in the directory for Framework 2.0 (it depends on you in which version you want to install).I will install in v4.0
the path is C:\WINDOWS\Microsoft.NET\Framework\v4.0.30319\

Note: The path will be different for different versions of .NET Framework. You can see on this path (C:\Windows\Microsoft.NET\Framework) or search on your machine where InstallUtil.exe is stored.

Step 3 :.NET service runs as a command (specify the full path to your service such as (service location C:\Debug\yourServiceName.exe)
type command in cmd InstallUtil.exe C:\Debug\yourServiceName.exe Press enter key as you can see here.

Step 4: If you want to see service is where it is installed.
press window+R and type in run like services.msc

as you can see where service is installed . just click to start your service.Now it is ready to work. :)

Step 5: To uninstall service. just type simple command in prompt
just add ‘/u’ between installutil.exe and the path as in the following:
InstallUtil.exe /u C:\Debug\yourServiceName.exe

I hope this is helpful to you .If you like my post Please follow me on Instagram @twostepdevelopers and share your feedback.

What is globalThis? ES2020 new features

twostepdeveloper — Fri, 10 Jan 2020 10:32:59 +0000

A new property added in es2020 called globalThis. It's cross-platform support to access to the global object in JavaScript. Accessing the global property in JavaScript has always posed some difficulty. This is because different platforms have different ways to access it.

such as :
Client side uses: windows,frames,this
web workers uses: self
node js uses: global

now all environment can use simple globalThis .
Also you can watch my video on this topic.
https://youtu.be/yn3J6KfMqBw

Variable Shadowing in JavaScript

twostepdeveloper — Thu, 03 Oct 2019 07:04:45 +0000

If you declare a variable within a certain scope (decision block, function, or inner class).It has the same name as a variable declared in an outer scope. This is called variable shadowing. How it works. let's start...

Also You can understand more about it.
Click here https://jsbin.com/cupixak/edit?js,console
https://youtu.be/nzSGIzgbv9U

I hope this is useful javascript tips. if you like please follow, share,comments and like. (Muhammad Rizwan Alam)
also please don't forget to subscribe my youtube channel

Difference between varchar, nvarchar in sql server ?

twostepdeveloper — Tue, 17 Sep 2019 07:01:23 +0000

In this article i will differentiate between varchar, nvarchar data type.

About the Varchar:

It is a variable that has a length data type.
It is use to store non-Unicode characters.
It Occupy 1 byte of space for each character.

example :
DECLARE @name VARCHAR(20)

SET @name = 'Rizwan'

SELECT @name AS 'Name', DATALENGTH(@name) AS 'Occupied Length' ,
LEN(@name) AS 'Name Length'
Result : Name Occupied Length Length
Rizwan 6(6*1 byte=6bytes) 6

About the NVARCHAR data:

It is a variable that has length data type.
It is use to store Unicode characters.
It Occupy 2 bytes of space for each character.

example :
DECLARE @name NVARCHAR(20)

SET @name = 'Rizwan'

SELECT @name AS 'Name', DATALENGTH(@name) AS 'Occupied Length' ,
LEN(@name) AS 'Name Length'
Result : Name Occupied Length Length
Rizwan 12(6*2 byte=12 bytes) 6

Conclusion

This tiny article is just to make you aware of the basic differences between the VARCHAR and NVARCHAR data types they are used to store characters, numbers or special characters.
This is my first article
I hope you all will like and that will be helpful to you most of developers confuse about varchar ,nvarchar when we should use varchar,nvarchar.
Please Leave your comments about your opinion good or bad.
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