Today, when we use a component in a dialog, we can pass the value of an input this way: @Component({ selector: 'app-foo', template: '{{ data }}', }) export class FooComponent { @Input() data: IFooData | null = null; } const dialogRef = this.dialog.open(FooComponent); dialogRef.componentInstance.data = ...; // <-- we can pass the value here (See Angular 2: Set @Input variables in Dialog Component) How do you do the same with a signal-based input? @Component({ selector: 'app-foo', template: '{{ data }}', }) export class FooComponent { data = input<IFooData | null>(null) } Note: I know that I could use MatDialogConfig.data + MAT_DIALOG_DATA, but I do not want to couple my FooComponent with the dialog concept. Continue reading...