Add Python(or Java or anything) to Environment variables

After installation of python in windows 10, python is not added to environment variable by default. If you want to use cmd for python, then python installed path must be configured in the environment variable. 

When you type python in cmd, you'll see the below message:

Follow the below steps to add python to environment:

1) Open System in Control panel

2) Click Advanced system settings

3)Click Environment Variables

4) Select Path in User Variables and click edit

5) Either create new and type in the path of Python installed location or Browse the folder using browse button in the above screenshot.

6) Click OK and close the Environment variables settings window and all other opened windows. 

7) Start a new command prompt and type python to test. 

Done!

Add Azure Devops plugins in Android Studio for Git or TFVC Version control

 By default, Android studio can not connect to the Azure devops source codes. To connect to the Azure devops, a plugins by Microsoft needs to be installed in the android studio. To install the plugin, follow the below steps:

1) Open a project in Android studio
2) go to File --> Setting
3) go to Plugins

4) Search for azure devops

5) Click Install
6) Restart the Android studio.
7) Menu->VCS->Checkout from Version Control -> Azure Devops Git

8)Click Sign in ... 

9) Follow the wizard to connect the project.

Create Azure SQL User and add a sql role

I wanted to add a new sql user "sqluser" in Azure SQL server to access a database "sanjeeb". 

Steps to create a new SQL user. 

1) Connect to the Azure sql server with existing user using Microsoft SQL Server Management studio

2) Open new query window under Master database

3) Run the below script
    
    CREATE LOGIN [sqllogin] WITH PASSWORD = 'verystrongpassword#1' 
   

4) Open new query window under database "sanjeeb"

5) Run the below script

CREATE USER [sqluser]

FOR LOGIN [sqllogin]

WITH DEFAULT_SCHEMA =  dbo

GO

-- Add user to the database owner role

EXEC sp_addrolemember N'db_owner', N'sqluser'

GO

6) You've now created a user login "sqllogin", user account "sqluser" and added the user to "db_owner role"

7) Connect to the database using the new user login account. 

login: sqllogin

password:verystrongpassword#1

8) Click Options and select Connection properties tab

9) input Connect to database = sanjeeb

10) Click connect

Scrollable readonly EditView in Kotlin

 Scrollable readonly EditView in Kotlin

In the view xml file: 
<EditText
        android:id="@+id/etResult"
        android:layout_width="match_parent"
        android:layout_height="343dp"
        android:background="@color/backgroundColor"
        android:backgroundTint="#00000000"
        android:ems="10"
        android:enabled="true"
        android:fontFamily="sans-serif-condensed"
        android:gravity="start|top"
        android:hint="@string/blankfoldermessage"
        android:importantForAutofill="no"
        android:inputType="none"
        android:paddingTop="2dp"
        android:singleLine="false"
        tools:targetApi="o" />

in the kotlin file (init function): 

etResult.keyListener = null

this will allow the edit text to be multiline, not editable but scrollable. 

Simple use of Timer in Kotlin

the code below will set the button to clickable after 30 sec:

btnOk.isClickable=false

Timer().schedule(timerTask {

    btnOk.isClickable=true

}, 1000*30)

the above code runs in a separate thread, 

so the UI is responsive while running this code.

Working with UI controls from Non main thread in Kotlin

import org.jetbrains.anko.doAsync
import org.jetbrains.anko.uiThread

fun anyFunction(){

doAsync {

      // Normal code inside Async thread

      I=I+1

     If(I=100){

    uiThread {

        tvResult.setText =”I is now 100!!”

      }

    }

   //More code

   If(x==0){

     uiThread {

        tvResult.setText =”there’s some problem!”

      }

   }

}

}

Note: - you can include multiple uiThread inside same doAsync

          - you can include multiple doAsync inside any function

Permission request pop up in android

Request user to give permission to read external storage in Android - (Kotlin)

if (ContextCompat.checkSelfPermission(this,
        Manifest.permission.READ_EXTERNAL_STORAGE)
    != PackageManager.PERMISSION_GRANTED) {

    // Permission is not granted    // Should we show an explanation?    if (ActivityCompat.shouldShowRequestPermissionRationale(this,
            Manifest.permission.READ_EXTERNAL_STORAGE)) {

    } else {
        // No explanation needed, we can request the permission.        ActivityCompat.requestPermissions(this,
            arrayOf(Manifest.permission.READ_EXTERNAL_STORAGE),
            READ_STORAGE_CODE);

    }
} else {
    // Permission has already been granted}

NOTE: READ_STORAGE_CODE is just an int constant with fix value like 1001, or 2023

and is a variable in class level. 

TFS -GIT CertGetCertificateChain trust error CERT_TRUST_IS_UNTRUSTED_ROOT

Problem 1)

2019-07-02T14:19:12.5157398Z fatal: unable to access 'https://tfssite.company.com/tfs/UK_ProjectCollection/SalesPortal/_git/SalesPortalWeb/': SSL certificate problem: unable to get local issuer certificate

2019-07-02T14:19:12.9764145Z ##[error]Git fetch failed with exit code: 128

2019-07-02T14:19:12.9861630Z ##[section]Finishing: Get Sources

In the TFS_Build Server or App server(if build and app server is in the same machine) >

run the script from this url: https://blog.sanjeebojha.com.np/2019/06/git-ssl-certificate-problem-unable-to.html

Once this is done, you should get another problem:

Problem 2)  CertGetCertificateChain trust error CERT_TRUST_IS_UNTRUSTED_ROOT

2019-07-02T14:24:57.1800199Z ##[command]git -c http.extraheader="AUTHORIZATION: bearer ***" fetch --tags --prune --progress --no-recurse-submodules origin

2019-07-02T14:24:57.4540146Z fatal: unable to access 'https://tfssite.company.com/tfs/UK_ProjectCollection/SalesPortal/_git/SalesPortalWeb/': schannel: CertGetCertificateChain trust error CERT_TRUST_IS_UNTRUSTED_ROOT

2019-07-02T14:24:57.5198064Z ##[error]Git fetch failed with exit code: 128

2019-07-02T14:24:57.5288511Z ##[section]Finishing: Get Sources

  

1. Export the certificate public key to a file. The file is later required.
2. Open the url "https://tfssite.company.com/tfs/projectcollection" in IE
3. Click on the Lock icon in the browser address bar
4. 
5. 
6. 
7. Select The Root level Certificate and Click View Certificate
8. 
9. 
10. 
11. 
12. 
13. 
14. 
15. 

Now Find the certificate file from GIT folder. 

normally it's inside GIT\usr\ssl\certs folder

1. Copy the file to User folder

copy ca-bundle.trust.crt c:\Users\svc_tfs17_app

2. Config Git to use trusted certificate using the crt file.  
   git config --global http.sslCAInfo c:\Users\svc_tfs17_app\ca-bundle.crt
3. Convert the \n (Unix) to \r\n (Windows) so that it can be displayed by notepad editor correctly.
4. Use the unix2dos open source software to convert \n to \r\n, or other notepad editor to replace \n to \r\n.

Here's the download link: http://www.efgh.com/software/unix2dos.htm

5. Copy the content of tfs.cer from step o to ca-bundle.crt at the bottom of the file.

Done!

Output :

Insert Identity Column in a table

 insert an identity column in that table by using the following code:

ALTER TABLE dbo.tablename ADD AUTOID INT IDENTITY(1,1) 

MSSQL Remove duplicate Rows

1. Select the duplicate key values into a holding table. For example:
   
   

       SELECT col1, col2, col3=count(*)
       INTO holdkey
       FROM t1
       GROUP BY col1, col2
       HAVING count(*) > 1

2. Select the duplicate rows into a holding table, eliminating duplicates in the process. 
   For example:
          SELECT DISTINCT t1.* 
          INTO holddups
          FROM t1, holdkey 
          WHERE t1.col1 = holdkey.col1 
          AND t1.col2 = holdkey.col2

3. At this point, the holddups table should have unique PKs, however, this will not be the case if t1 had        
   duplicate PKs, yet unique rows (as in the SSN example above). Verify that each key in holddups is unique,
   and that you do not have duplicate keys, yet unique rows. If so, you must stop here and reconcile 
   which of the rows you wish to keep for a given duplicate key value. For example, the query:
          SELECT col1, col2, count(*)
          FROM holddups
          GROUP BY col1, col2
   should return a count of 1 for each row. If yes, proceed to step 5 below. 
   If no, you have duplicate keys, yet unique rows, and need to decide which 
   rows to save. This will usually entail either discarding a row, or creating
   a new unique key value for this row. Take one of these two steps for each 
   such duplicate PK in the holddups table.
   

4. Delete the duplicate rows from the original table. For example:
        DELETE t1
        FROM t1, holdkey
        WHERE t1.col1 = holdkey.col1
        AND t1.col2 = holdkey.col2  

5. Put the unique rows back in the original table. For example:
        INSERT t1 SELECT * FROM holddups

Another Way:

delete from table1

WHERE id IN (

SELECT t1.id

FROM table1 t1, table1 t2

WHERE t1.name = t2.name AND t1.id > t2.id

)