<mat-form-field>
                    <input type="text" placeholder="Search......." aria-label="Number" style="text-transform: uppercase"
                        matInput formControlName="myControl" [matAutocomplete]="auto">
                    <mat-autocomplete #auto="matAutocomplete" autoActiveFirstOption (optionSelected)=getSelectedClient($event.option);>
                        <mat-option *ngFor="let option of displayList; let i = index" [value]="option">
                            {{option}}
                        </mat-option>
                    </mat-autocomplete>
                </mat-form-field>