FromBody ist null

Question

Ich mache einen Beitrag zu einem API und aus welchem ​​Grund auch immer ich einen Nullwert bekomme Ich benutze Angular2, um den api-Dienst zu nennen, im [FromBody] und nicht sicher warum. Ich habe folgende

Komponente

fileInfo: IFile;//this is an interface 
this.fileInfo = { 
    FileID:1000, 
    LinkTabID: 1, 
    FileName: 'Test', 
    FileDisplayName: 'test', 
    IsActive: true, 
    CreatedBy: 'mike', 
    UpdatedBy:'mike' 
} 

this._tabService.AddFile(this.fileInfo) 
    .subscribe(
     data => { 
      this.tabControls = data; 
     }, 
     error => this.errorMessage = <any>error); 

Dienst

AddFile(fileInfo: IFile){ 
    let headers = new Headers({ 'Content-Type': 'application/json' }); 
    let options = new RequestOptions({ headers: headers }); 

    return this._http.post(this._fileUploadAPI + 'InsertFile' , { fileInfo }, options) 
     .map((response: Response) => response.json()) 
     .catch(this.handleError); 
} 

in meinem Fiedler sehe ich die Rohdaten

WebAPI

public HttpResponseMessage InsertFile([FromBody] FileModel value) 
{ 
    try 
    { 
     // sp_GetFileResult fileEntry = _modelFactory.Parse(value); 

     if (fileEntry == null) 
      return Request.CreateResponse(HttpStatusCode.BadRequest, "Could not read file entry in the body"); 
     else 
     { 
      some logic 
     } 
    } 
    catch (Exception ex) 
    { 
     return Request.CreateErrorResponse(HttpStatusCode.BadRequest, ex); 
    } 
} 

*********** AUCH VERSUCHT ************************************ *****

AddFile(fileInfo: IFile){ 
    let headers = new Headers({ 'Content-Type': 'application/json' }); 
    let options = new RequestOptions({ headers: headers }); 

    return this._http.post(this._fileUploadAPI + 'InsertFile', { value: fileInfo }, options) 
     .map((response: Response) => response.json()) 
     .catch(this.handleError); 
} 

jason

bekam den gleichen Fehler

FileModel

public class FileModel 
    { 

    public int FileID { get; set; } 
    public int LinkTabID { get; set; } 
    public string FileName { get; set; } 
    public string FileDisplayName { get; set; } 
    public bool IsActive { get; set; } 
    public string CreatedBy { get; set; } 
    public string UpdatedBy { get; set; } 

    } 

Answer 1

Verstanden, musste nur "Ergebnis" zu meinen jason hinzufügen

AddFile(fileInfo: IFile){ 
    let headers = new Headers({ 'Content-Type': 'application/json' }); 
    let options = new RequestOptions({ headers: headers }); 

    return this._http.post(this._fileUploadAPI + 'InsertFile', { result: fileInfo }, options) 
     .map((response: Response) => response.json()) 
     .catch(this.handleError); 
} 

statt

AddFile(fileInfo: IFile){ 
    let headers = new Headers({ 'Content-Type': 'application/json' }); 
    let options = new RequestOptions({ headers: headers }); 

    return this._http.post(this._fileUploadAPI + 'InsertFile', { value: fileInfo }, options) 
     .map((response: Response) => response.json()) 
     .catch(this.handleError); 
}