How to format pen drive in Ubuntu

Graphical Method

Open Disks program 

Then choose your device from left. 
Click more options button and click onformat as below:

Command-Line

How to format pen drive in ubuntu any version.

Open the Terminal (Ctrl + Alt + T)

fdisk -l

umount /dev/sdc*

mkfs.vfat /dev/sdc*

Thank You

How to completely uninstall android studio in ubuntu

Open Terminal

Ctrl + Alt + T

sudo su  //login to superuser

Run the following commands in the terminal:

rm -Rf /Applications/Android\ Studio.app  
rm -Rf ~/Library/Preferences/AndroidStudio*  
rm -Rf ~/Library/Preferences/com.google.android.*  
rm -Rf ~/Library/Preferences/com.android.*  
rm -Rf ~/Library/Application\ Support/AndroidStudio*  
rm -Rf ~/Library/Logs/AndroidStudio*  
rm -Rf ~/Library/Caches/AndroidStudio*  
rm -Rf ~/.AndroidStudio*  
rm -Rf ~/.gradle  
rm -Rf ~/.android  
rm -Rf ~/Library/Android*  
rm -Rf /usr/local/var/lib/android-sdk/  
rm -Rf ~/.AndroidStudio*  

To delete all projects:

rm -Rf ~/AndroidStudioProjects  

Uninstall Android Studio

Yii2 CheckBox

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ＬＩＫＥ | ＣＯＭＭＥＮＴ | ＳＨＡＲＥ | ＳＵＢＳＣＲＩＢＥ

Yii2 - Display checkbox for boolean database field on active form

<?= $form->field($model, 'mon')->checkBox(['selected' => $model->mon])?>

Change Label

<?= $form->field($model, 'mon')->checkBox(['label'=> 'Monday',  'selected' => $model->mon])?>

Required Checkbox

Add this code your rules function on model class

           [['mon''], 'compare',
                'compareValue' => true,
                'operator' => '==',
                'message' => "Check to Continue",
                'when' => function ($data) {
                    return $data->mon== 1;
                }
            ],



Example

Model class

<?php

namespace backend\modules\test\models;

use Yii;

/**
 * This is the model class for table "studentsdetails".
 *
 * @property integer $id
 * @property string $name
 * @property string $address
 * @property integer $isverified
 */
class Studentsdetails extends \yii\db\ActiveRecord
{
    /**
     * @inheritdoc
     */
    public static function tableName()
    {
        return 'studentsdetails';
    }

    /**
     * @inheritdoc
     */
    public function rules()
    {
        return [
            [['name', 'isverified'], 'required'],
            [['isverified'], 'integer'],
            [['name'], 'string', 'max' => 300],
            [['address'], 'string', 'max' => 500],
         
            [['isverified'], 'compare',
                'compareValue' => true,
                'operator' => '==',
                'message' => "Check to Continue",
                'when' => function ($data) {
                    return $data->isverified== 1;
                }
            ],

         
        ];
    }

    /**
     * @inheritdoc
     */
    public function attributeLabels()
    {
        return [
            'id' => 'ID',
            'name' => 'Name',
            'address' => 'Address',
            'isverified' => 'Isverified',
        ];
    }
}

View file

_form.php

<?php

use yii\helpers\Html;
use yii\widgets\ActiveForm;

/* @var $this yii\web\View */
/* @var $model backend\modules\test\models\Studentsdetails */
/* @var $form yii\widgets\ActiveForm */
?>

<div class="studentsdetails-form">

    <?php $form = ActiveForm::begin(); ?>

    <?= $form->field($model, 'name')->textInput(['maxlength' => true]) ?>

    <?= $form->field($model, 'address')->textInput(['maxlength' => true]) ?>

 
    <?= $form->field($model, 'isverified')->checkBox(['selected' => $model->isverified])?>
 
 
    <div class="form-group">
        <?= Html::submitButton($model->isNewRecord ? 'Create' : 'Update', ['class' => $model->isNewRecord ? 'btn btn-success' : 'btn btn-primary']) ?>
    </div>

    <?php ActiveForm::end(); ?>

</div>

Related Links

MySql Boolean Data type field create

MySql Boolean Data type field create

MySql BOOLEAN or TINYINT

MySQL provides BOOLEAN or BOOL as the synonym of TINYINT(1).

Example 1
Create job table  with boolean data type.

After save job table structure.

Example 2

CREATE TABLE tasks (

    id INT PRIMARY KEY AUTO_INCREMENT,

    title VARCHAR(255) NOT NULL,

    completed BOOLEAN

)

Javascript Tutorials

Convert DD-MM-YYYY to YYYY-MM-DD format using Javascript

var date = "03-11-2014"; 

var newdate = date.split("-").reverse().join("-");

Javascript add number of days to today's date?

   var dd = 07-12-2017
   var x = 30; //days for add 

   var newdate = dd.split("-").reverse().join("-");   //date convert yyyy-mm-dd
   var someDate = new Date(newdate);
   someDate.setDate(someDate.getDate() + x); //number  of days to add, e.x. x days
   var dateFormated = someDate.toISOString().substr(0,10);     
          
   var vdate = dateFormated.split("-").reverse().join("-");   //date convert to dd-mm-yyyy  
 
 

VB.NET DataGridView Tutorials

Adding checkbox column to DataGridView

  Dim AddColumn As New DataGridViewCheckBoxColumn

  With AddColumn
    .HeaderText = "ColumnName"
    .Name = "Column Name that will be displayed"
    .Width = 80
  End With

  dgAdmin.Columns.Insert(1, AddColumn)

datagridview column header checkbox

Public Class search

Private col As DataGridViewCheckBoxColumn

Private chkBox As CheckBox

Private Sub search_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load

col = New DataGridViewCheckBoxColumn()

col.Name = "select"

col.HeaderCell.Style.Alignment = DataGridViewContentAlignment.MiddleCenter

dgcourse.Columns.Insert(0, col)

chkBox = New CheckBox()

Dim rect As Rectangle = dgcourse.GetCellDisplayRectangle(0, -1, True)

chkBox.Size = New Size(18, 18)

chkBox.Location = rect.Location

AddHandler chkBox.CheckedChanged, AddressOf chkBox_CheckedChanged

dgcourse.Controls.Add(chkBox)

End Sub

Private Sub chkBox_CheckedChanged(ByVal sender As System.Object, ByVal e As System.EventArgs)

'checkbox value change 

For i As Integer = 0 To dgcourse.Rows.Count - 1

dgcourse(0, i).Value = chkBox.Checked

Next

End Sub

End Class

DataGridView - how to hide the “new” row?

Click on datagridview and change properties AllowUserToAddRows set as false.

Programmatically,

myGrid.AllowUserToAddRows = False

Read the checked rows in a datagridview

For i = 0 To dgcourse.Rows.Count - 1

   If dgcourse.Rows(i).Cells("select").Value Then

      'dgcourse.Item(1, i).Value 

    End If

Next i

Delete row in datagridview

DataGridView1.Rows.Remove(DataGridView1.Rows(x))

Make one column set as editable

Datagridview Readonly Property set as True - all columns are not editable.

dataGridView1.Columns("ColumnName").ReadOnly = false;

How to send SMS from vb .net application?

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