Hello, i am using the content and media service, to create content and upload media.

All works fine. But when i dont pick a media/file it still goes in my foreach var file in model.uploadFiles.

my form view.

@using (Html.BeginUmbracoForm<Sportscloud.dk.Controllers.AthletePostController>("HandleFormSubmit"))
{
<div class="form">
    <div class="col-xs-12">
        @Html.TextBoxFor(m => m.PostName, new { @class = "form-control", placeholder = "Emne" })
        @Html.ValidationMessageFor(m => m.PostName)
    </div>
    <div class="col-xs-12">
        @Html.TextAreaFor(m => m.Text, new { @class = "form-control", placeholder = "Tekst" })
        @Html.ValidationMessageFor(m => m.Text)
    </div>
    <div>
        <input id="btnUploadFiles" type="file" name="UploadFiles" multiple/>
        @Html.ValidationMessageFor(m => m.UploadFiles)
    </div>
    <div class="createPost">
        <button id="contact-submit" type="submit" class="btn btn-primary input-group-sm">Opret</button>
    </div>
</div>  
}

My model:

[Required]
    public string PostName { get; set; }
    [Required]
    public string Text { get; set; }

    public IEnumerable<HttpPostedFileBase> UploadFiles { get; set; }

My controller:

if (!ModelState.IsValid)
            return CurrentUmbracoPage();

        //Create content
        var newRecord = Services.ContentService.CreateContent(model.PostName, CurrentPage.Id, "federationRecordPage");
        newRecord.SetValue("header", model.PostName);
        newRecord.SetValue("text", model.Text);

        //create new media files
        var gallerySavedPics = "";

        foreach (var file in model.UploadFiles)
        {

            var FileType = "";
            if (file.FileName.Contains(".pdf"))
            {
                FileType = "File";
            }
            else
            {
                FileType = "Image";
            }

            int MemberMediaFolder = Convert.ToInt32(CurrentPage.GetProperty("athleteMediaFolder").Value.ToString());

            IMedia uploadMediaFiles = Services.MediaService.CreateMedia(file.FileName, MemberMediaFolder, FileType);
            uploadMediaFiles.SetValue("umbracoFile", file);
            Services.MediaService.Save(uploadMediaFiles);

            gallerySavedPics += uploadMediaFiles.GetUdi().ToString() + ",";


        }

        gallerySavedPics = gallerySavedPics.Substring(0, gallerySavedPics.Length - 1);

        if (gallerySavedPics != "")
        {

            newRecord.SetValue("documentUpload", gallerySavedPics);
        }

        Services.ContentService.SaveAndPublishWithStatus(newRecord);

How can i avoid to run my foreach (var file in model.UploadFiles) if there is no files in my input file picker.