Capture All Of Table’S(Mat-Table) Data In A Button Click Mới Cập Nhật

To capture all data from a mat-table in an Angular application when a button is clicked, you can follow these steps:

1. Import ViewChild and MatTable from @angular/material:

typescript
import { ViewChild } from '@angular/core';
import { MatTable } from '@angular/material/table';

1. Declare a variable to hold the data from the mat-table:

typescript
dataSource: any[];

1. Use ViewChild to get a reference to the mat-table:

typescript
@ViewChild(MatTable) table: MatTable<any>;

1. When the button is clicked, get the data from the mat-table and assign it to the dataSource variable:

typescript
captureData() {
  this.dataSource = this.table.dataSource.data;
}

Here is the complete code for your reference:

typescript
import { Component, ViewChild } from '@angular/core';
import { MatTable } from '@angular/material/table';

@Component({
  selector: 'app-my-component',
  template: `
    <mat-table #myTable [dataSource]="dataSource">
      <!-- Table columns -->
    </mat-table>

    <button (click)="captureData()">Capture Data</button>
  `
})
export class MyComponent {
  dataSource: any[];

  @ViewChild(MatTable) table: MatTable<any>;

  captureData() {
    this.dataSource = this.table.dataSource.data;
  }
}

Note: This assumes that you have already set up a mat-table with data. If not, you can refer to the official documentation for more information: https://material.angular.io/components/table/overview

Assuming you are referring to the Angular Material table component (MatTable), you can retrieve data from the table by accessing the data source of the table. The data source is typically an instance of the MatTableDataSource class, which has a data property containing an array of data objects.

Here’s an example of how you can retrieve data from a MatTableDataSource instance:

typescript
import { Component, ViewChild } from '@angular/core';
import { MatSort } from '@angular/material/sort';
import { MatTableDataSource } from '@angular/material/table';

interface ExampleData {
  id: number;
  name: string;
  value: number;
}

@Component({
  selector: 'app-example',
  template: `
    <table mat-table [dataSource]="dataSource" matSort>
      <ng-container matColumnDef="id">
        <th mat-header-cell *matHeaderCellDef mat-sort-header> ID </th>
        <td mat-cell *matCellDef="let row"> {{ row.id }} </td>
      </ng-container>

      <ng-container matColumnDef="name">
        <th mat-header-cell *matHeaderCellDef mat-sort-header> Name </th>
        <td mat-cell *matCellDef="let row"> {{ row.name }} </td>
      </ng-container>

      <ng-container matColumnDef="value">
        <th mat-header-cell *matHeaderCellDef mat-sort-header> Value </th>
        <td mat-cell *matCellDef="let row"> {{ row.value }} </td>
      </ng-container>

      <tr mat-header-row *matHeaderRowDef="displayedColumns"></tr>
      <tr mat-row *matRowDef="let row; columns: displayedColumns;"></tr>
    </table>
  `,
})
export class ExampleComponent {
  @ViewChild(MatSort) sort: MatSort;

  dataSource: MatTableDataSource<ExampleData>;

  displayedColumns: string[] = ['id', 'name', 'value'];

  constructor() {
    const data: ExampleData[] = [
      { id: 1, name: 'John', value: 100 },
      { id: 2, name: 'Jane', value: 200 },
      { id: 3, name: 'Bob', value: 300 },
    ];

    this.dataSource = new MatTableDataSource(data);
  }

  ngAfterViewInit() {
    this.dataSource.sort = this.sort;
  }

  // You can retrieve the data by accessing the data source's `data` property
  getData() {
    const data: ExampleData[] = this.dataSource.data;
    console.log(data);
  }
}

In the example above, the ExampleComponent has a MatTableDataSource instance bound to the table’s dataSource input. The data source is initialized with an array of ExampleData objects, and the table columns are defined using the matColumnDef directive.

To retrieve the data, you can access the data property of the data source. In the getData() method, we simply log the data to the console. Note that the data returned is an array of ExampleData objects.

In Angular 8, you can display table data using the built-in ngFor directive to iterate over an array of objects and display the data using HTML table tags. Here’s an example of how you can display a table of data in Angular 8:

1. First, define the data that you want to display in your component’s TypeScript file. For example:

yaml
export class AppComponent {
  users = [
    { name: 'John', age: 25, email: 'john@example.com' },
    { name: 'Jane', age: 30, email: 'jane@example.com' },
    { name: 'Bob', age: 40, email: 'bob@example.com' }
  ];
}

1. Next, in your component’s HTML file, use the ngFor directive to iterate over the users array and display the data in a table:

php
<table>
  <thead>
    <tr>
      <th>Name</th>
      <th>Age</th>
      <th>Email</th>
    </tr>
  </thead>
  <tbody>
    <tr *ngFor="let user of users">
      <td>{{ user.name }}</td>
      <td>{{ user.age }}</td>
      <td>{{ user.email }}</td>
    </tr>
  </tbody>
</table>

In this example, the ngFor directive is used to loop through the users array and display the data in the table. The *ngFor directive is applied to the <tr> element, which creates a new row for each user in the array. The {{ }} syntax is used to display the values of the name, age, and email properties of each user in the table cells.

That’s it! You can now run your Angular 8 application and the table of data should be displayed in your browser.

To get data in a table using Angular, you can follow these general steps:

1. Define a data source: You can define a data source for your table in your Angular component using an array or an Observable.

2. Bind the data source to the table: Use Angular’s data binding syntax to bind the data source to the table in your template.

3. Use Angular’s ngFor directive: To display the data in the table, use the ngFor directive to loop through the data source and create a table row for each item.

Here’s an example of how to get data in a table using Angular:

1. Define a data source in your component:

typescript
import { Component } from '@angular/core';

@Component({
  selector: 'app-table',
  template: `
    <table>
      <thead>
        <tr>
          <th>Name</th>
          <th>Age</th>
        </tr>
      </thead>
      <tbody>
        <tr *ngFor="let person of people">
          <td>{{ person.name }}</td>
          <td>{{ person.age }}</td>
        </tr>
      </tbody>
    </table>
  `,
})
export class TableComponent {
  people = [
    { name: 'John', age: 30 },
    { name: 'Jane', age: 25 },
    { name: 'Bob', age: 40 },
  ];
}

1. Bind the data source to the table in your template:

html
<app-table></app-table>

This will render a table with three rows, one for each person in the people array.

Note that this is a simple example and in a real-world application, you would typically retrieve data from a backend API using Angular’s HttpClient service, and then assign the data to a property in your component.