Get the API response and store the data in to an array

I am trying to call an API from my Angular Application and get the data back use the data in to my front end. I get the response back but I am not sure how to get a specific field from the JSON and store them in to an array

dataList;
apiUrl = 'GetDatafromSys?prj=123;

constructor(service: DataService) {
service.get<any>(this.apiUrl).subscribe(x => {this.dataList = (JSON.stringify(x)); });
}


I get the dataList back as JSON like

[
{
"Name": "Jack",
"EmpNo":"123"
},
{
"Name": "Joe",
"EmpNo":"456"
}
]


I am not sure how to get the Name from the JSOn and store in a array so I can use it as a data source for a dropdown

<dx-select-box [dataSource]=""

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