KaranPato

import { NgModule } from '@angular/core';
import { CommonModule } from '@angular/common';
import {
  MatButtonModule, MatCardModule, MatDialogModule, MatInputModule, MatTableModule, MatProgressBarModule,
  MatToolbarModule, MatMenuModule, MatIconModule, MatProgressSpinnerModule, MatFormFieldModule, MatGridListModule
} from '@angular/material';

@NgModule({
  imports: [
    CommonModule,

KaranPato

import { Injectable } from '@angular/core';
import { HttpHeaders, HttpClient } from '@angular/common/http';

var reqHeader = new HttpHeaders({ 'Content-Type': 'application/json' });

@Injectable({
  providedIn: 'root'
})
export class MainService {
  //Add your API path here.