I work on autocomplete text box on angular 7 I face issue when I write on text box
 
search or filter not work and not give me result .
 
actually when I write on text box auto complete related data must display but this not happen .
  1. class deliverysys.ts
  2. export class deliverysys {
  3. constructor(public optionId: number, public optionName: string) { }
  4. }
  1. DeliverySystemComponent.ts
  2. export class DeliverySystemComponent implements OnInit {
  3. myControl = new FormControl();
  4. ExportOptions: deliverysys[];
  5. constructor(private http: HttpClient,private _dataService: DeliverySysService) {
  6. this._dataService.getExport().subscribe(data => { this.ExportOptions = data
  7. console.log(this.ExportOptions)
  8. });
  9. }
  10. getselected(value,index) {
  11. console.log("selected is" + index)
  12. }
  13. }
this display data as below :
  1. this.ExportOptions
  2. (5) [{…}, {…}, {…}, {…}, {…}]
  3. 0: {optionID: 1, optionName: "Export"}
  4. 1: {optionID: 2, optionName: "Export Normalized"}
  5. 2: {optionID: 3, optionName: "Export Normalized New"}
  6. 3: {optionID: 4, optionName: "Export Normalized Relation"}
  7. 4: {optionID: 5, optionName: "Export Nxp Comptitor"}
  1. DeliverySystemComponent.html
  2. class="example-full-width">
  3. "text" placeholder="Select Exporter" aria-label="Number" matInput [formControl]="myControl" [matAutocomplete]="auto">
  4. "matAutocomplete" >
  5. "getselected(exp.optionName,i+1)" *ngFor="let exp of this.ExportOptions;let i = index" [value]="exp.optionName">
  6. {{exp.optionName}}
as you see image below when write any text not found
not give me not found
also if word I write found auto complete not changed and not give me related result
so How to solve issue of not displaying data related when I write or filter data ?