asp.net mvc 4 - How To make own Template Inbox view use MVC using C# -

i using smtp mail sending . wokring normal mail message send inbox want own custom template mail . have using trying simple layout own

@{     viewbag.title = "mylayout"; }  <h2>mylayout</h2> 

in contact page

i have added layout

@model inspinia_mvc5.models.mailmodel @{     viewbag.title = "index";      @layout = "~/views/shared/mylayout.cshtml";  }  <script src="~/scripts/jquery-2.1.1.min.js"></script> <script>      $(document).ready(function () {          $('.summernote').summernote();         if ('@viewbag.message' == 'sent') {             alert('mail has been sent successfully');         }          $(document).ready(function () {              $('.summernote').summernote();          });      }); </script>   <div class="wrapper wrapper-content">     <div class="row">         <div class="col-lg-2">             <div class="ibox float-e-margins">                 <div class="ibox-content mailbox-content">                     <div class="file-manager">                         <div class="row">                             <a class="btn btn-block btn-primary compose-mail" href="@url.action("contactus", "contactus")">compose mail</a>                         </div>                     </div>                 </div>             </div>         </div>         <div class="col-lg-8 animated fadeinright">             <div class="mail-box-header">                  <h2>                     compse mail                 </h2>             </div>             <div class="mail-box">                  @using (@html.beginform("contactus", "contactus", formmethod.post, new { @id = "form1", @enctype = "multipart/form-data" }))                 {                     <div class="mail-body">                          <form class="form-horizontal" method="get">                             <div class="form-group">                                 <label class="col-sm-2 control-label">to:</label>                                 <div class="col-sm-10"> <input type="text" name="to" class="form-control" placeholder="enter email here"></div>                             </div>                             <br />                              <div class="form-group">                                 <label class="col-sm-2 control-label">subject:</label>                                 <div class="col-sm-10"> <input type="text" name="subject" class="form-control" placeholder="enter subject here"></div>                             </div>                             <br/>                             <br/>                             <br />                              @*@html.textboxfor(m => m.subject)*@                              <div class="form-group">                                 <label class="col-sm-2 control-label">attachment:</label>                                  <input type="file" name="fileuploader" />                             </div>                         </form>                          <div class="mail-text h-200">                             <div class="summernote">                                   @html.textareafor(m => m.body, new { @class = "form-control", style = "width: 840px; height: 139px;" })                                  <br />                                 <br />                              </div>                             <div class="clearfix"></div>                         </div>                          <div class="mail-body text-right tooltip-demo">                             @html.validationsummary()                             <input type="submit" class="btn btn-sm btn-primary" data-toggle="tooltip" data-placement="top" value="send" />                           </div>                      </div>                 }                 </div>             </div>         </div>      </div>  @section styles {     @styles.render("~/plugins/summernotestyles") @scripts.render("~/plugins/summernote") } 

after running code getting error

the layout page "= "~/views/shared/mylayout.cshtml";" not found @ following path: "~/views/contactus/= "~/views/shared/mylayout.cshtml";" 

please 1 tell how send own template mail inbox

should be:

@model inspinia_mvc5.models.mailmodel @{     viewbag.title = "index";      layout = "~/views/shared/mylayout.cshtml";  }