steps to use append from controll in angular+web api

             latest learn about form controll appending and access in api.

  formdataobj = new FormData();

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     Array.from(this.files).map((file, index) => {

      return this.formdataobj.append('file' + index, file, file.name);

    });

    this.formdataobj .delete('Name');

    this.formdataobj .append('Name', "username");

    pass  this.formdataobj to service

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-----api

 [HttpPost("insert")]

  public bool Insert()

 {

        

var files = Request.Form.Files;

var MyName = Request.Form["Name"].ToString();

 foreach (var item in files)

                {}

}