protected void ButtonSubmitCaregory_Click(object sender, EventArgs e)
        {
            string name = this.TextBoxCategoryName.Text;
            string description = this.TextBoxCaragoryDescription.Text;

            Category category = new Category ()
            { Name = name, Description = description };

            ApplicationDbContext context = new ApplicationDbContext();
            context.Categories.Add(category);
            context.SaveChanges();
        }
        protected void ButtonSubmitCaregory_Click(object sender, EventArgs e)
        {
            string name = this.TextBoxCategoryName.Text;
            string description = this.TextBoxCaragoryDescription.Text;
            if (string.IsNullOrWhiteSpace(name) ||
                string.IsNullOrWhiteSpace(description))
            {
                throw new ArgumentException();
            }
            Category category = new Category ()
            { Name = name, Description = description };

            ApplicationDbContext context = new ApplicationDbContext();
            context.Categories.Add(category);
            context.SaveChanges();
        }