get date for database and set two view editorfor in asp.mvc 4

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ASP.NET

MVC

I have a this view in asp.net mvc 4:

public class BPLModel
    {
        public BPLModel()
        {
            LLIST = new List<SelectListItem>();
         }
         public int BookId { get; set; }

        [Remote("IsCodeExist", "BPL", ErrorMessage = "code is not exist")]
        public string BookCode { get; set; }

        public string Bookname { get; set; }

        public string AuthorName { get; set; }

        public string TranslatorName { get; set; }

        public string LevelName { get; set; }
        public IEnumerable<SelectListItem> LLIST { get; set; }
    }

and this model:

model BookPublication.Models.BPLModel

@{
    ViewBag.Title = "create";
}


@using (Html.BeginForm())
{
    @Html.AntiForgeryToken()
    @Html.ValidationSummary(true)

    <fieldset>
        <legend>BPLModel</legend>
      
<!--bookcode, bookname from table book.
    AuthorName, TranslatorName form table author.
    LevelName form table bpl -->

        <div class="editor-label">
            @Html.LabelFor(model => model.BookCode)
        </div>
        <div class="editor-field">
            @Html.EditorFor(model => model.BookCode)
            @Html.ValidationMessageFor(model => model.BookCode)
        </div>
            <div class="editor-label">
                @Html.LabelFor(model => model.Bookname)
            </div>
            <div class="editor-field">
                @Html.EditorFor(model => model.Bookname)
                @Html.ValidationMessageFor(model => model.Bookname)
            </div>

            <div class="editor-label">
                @Html.LabelFor(model => model.AuthorName)
            </div>
            <div class="editor-field">
                @Html.EditorFor(model => model.AuthorName)
                @Html.ValidationMessageFor(model => model.AuthorName)
            </div>

            <div class="editor-label">
                @Html.LabelFor(model => model.TranslatorName)
            </div>
            <div class="editor-field">
                @Html.EditorFor(model => model.TranslatorName)
                @Html.ValidationMessageFor(model => model.TranslatorName)
            </div>
        }

        <p>
<input type="submit" name="submit1" value="fill">
        </p>
        <div class="editor-label">
            @Html.LabelFor(model => model.LevelName)
        </div>
        <div class="editor-field">
            <div class="editor-field">
                @Html.DropDownListFor(model => model.LevelId, Model.LLIST)
            </div>
        </div>

        <p>
            <input type="submit" value="create" />

        </p>
    </fieldset>
}

i want, when the user fill the bookcode editorfor, and click submit1, fills bookname editorfor, AuthorName editorfor, TranslatorName editorfor

how can i do?