Save content rich text editor to blob field in mysql database

Save content rich text editor to blob field in mysql database

I'm trying to save the content from a rich text editor (ckeditor in my
case) to my a blob field in my database.
This is my ViewModel:
public class ArticleViewModel
{
[Required]
[Display(Name = "Title")]
public string Title { get; set; }
[Required]
[Display(Name = "Description")]
public string Description { get; set; }
[Required]
[Display(Name = "Article Body")]
public string ArticleBody { get; set; }
}
The Article Body is my rich text field like this in my view:
<div class="editor-label">
@Html.LabelFor(model => model.ArticleBody)
</div>
<div class="editor-field">
@Html.TextAreaFor(model => model.ArticleBody, new { placeholder =
"Type the content of the article", @class = "ckeditor" })
@Html.ValidationMessageFor(model => model.ArticleBody, string.Empty)
</div>
In my Action in my Controller:
[HttpPost]
public ActionResult Create(ArticleViewModel model)
{
if (ModelState.IsValid)
{
try
{
// Get the userID who created the article
User usr = userrepo.FindByUsername(User.Identity.Name);
model.UsernameID = usr.user_id;
repository.AddArticle(model.Title, model.Description,
model.ArticleBody);
}
catch (ArgumentException ae)
{
ModelState.AddModelError("", ae.Message);
}
return RedirectToAction("Index");
}
return View(model);
}
But in my repository I get : Cannot convert type 'string' to 'byte[]'
Can somebody give me a start or help me with this?