How to call function return text of label from database on angular ?

Question

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Problem

How to call function (GetLabelTextForEmployee) on angular component on employees.ts and employees.component.html ?

I work on asp.net core 2.1 web API with angular 6.

I make function on web API to get text of label from database and show on view

this function work on web API but in angular I cannot know how to call it inside angular ?

this is my function :

C#

[HttpGet("{tableName}/{FieldName}")]
        [Produces("text/plain")]
        public string GetReferenceFilesAsync([FromRoute] string tableName, [FromRoute] string FieldName)
        {
          var Result =  (from h in _context.ReferenceFiles
                          where h.TableName == tableName && h.FieldName == FieldName
                          select h.FieldName).FirstOrDefault();
            if(Result==null)
            {
                Result = "Not Exist";
            }
           
            return (Result);
           

        }

Function above return only one string value for label

What I have tried:

on Angular Api service i do as below

GetLabelTextForEmployee(tableName:string,FieldName : string)
              {
                return this.http.get('https://localhost:44326/api/reference/' + tableName + '/' + FieldName);
              }

on main page or component Employee

getreferencefile(tableName:string,FieldName : string) :void
{
  this.api.GetLabelTextForEmployee(tableName,FieldName).subscribe( data=>{
    this.returnedData = data; //SUBSCRIBE HERE
    console.log(data);
  }); 
}

//on view how to call on get reference file function

Posted 23-Feb-19 8:19am

ahmed_sa

Updated 23-Feb-19 16:16pm

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Bryian Tan · Answer 1 · 2019-02-23T16:16:00

I would suggest to modify the service a little bit to tell the method to expect a text instead of JSON object.

JavaScript

public GetLabelTextForEmployee(tableName:string,FieldName:string): Observable<any> {
        return this.http
            .get('https://localhost:44326/api/reference/' + tableName + '/' + FieldName, {
                responseType: 'text',
            });
    }