I have angular class export class Parameters { SearchString: string ; } I have code in component.ts file strparameters:Parameters; ngOnInit() { this .strparameters.SearchString= "" ; this .dataservice.getEmployee( this .strparameters).subscribe((tempdate) =>{ this .employeelist=tempdate; }) ,err=>{ console.log(err); } } it gives me error - ERROR TypeError: Cannot set property 'SearchString' of undefined how can assign input value to SearchString in component.ts file ? please help here

Hello Ramnath First Initialize Parameters class public Parameters: Parameters; ngOnInit() { this.Parameters = new Parameters(); this. Parameters .SearchString = "" ; }

strparameters:Parameters; ngOnInit() { this .strparameters.SearchString= "" ; this .dataservice.getEmployee( this .strparameters).subscribe((tempdate) =>{ this .employeelist=tempdate; }) ,err=>{ console.log(err); } } how i can take SearchString value in web api get method? is anybody have an idea?