mvc中实现更新数据操作时遇到的问题

1、mvc中使用富文本控件
除了Page指令中要加上： ValidateRequest="false" 之外，
在Action的特性上也要加上[ValidateInput(false)]  
2、文件上传控件必须让Form标签加上： enctype="multipart/form-data" 属性。
在后台可以通过：
 HttpPostedFileBase file = this.HttpContext.Request.Files[0];
得到上传的文件对象。

更新操作的Action

[AcceptVerbs(HttpVerbs.Post)]
        [ValidateInput(false)]        
        public ActionResult BookDetail(int id,string title,string author,
            string Cover,string isbn,string publisher,string category,
            string TOC,string aurhorDescription,string contentDescription) {
            string sql = @"UPDATE Books SET Title=@Title,author=@author,
AurhorDescription = @authorDescription, contentDescription=@contentDescription,
PublisherId = @PublisherId, CategoryId = @CategoryId, TOC = @TOC
WHERE ID=@ID";
            SqlConnection con = new SqlConnection("Data Source=.;Initial Catalog=MyBookShop;uid=sa");
            SqlCommand com = new SqlCommand(sql, con);
            com.Parameters.Add("@Title", SqlDbType.VarChar).Value = title;
            com.Parameters.Add("@author", SqlDbType.VarChar).Value = author;
            com.Parameters.Add("@authorDescription", SqlDbType.VarChar).Value = aurhorDescription;
            com.Parameters.Add("@contentDescription", SqlDbType.VarChar).Value = contentDescription;
            com.Parameters.Add("@PublisherId", SqlDbType.VarChar).Value = publisher;
            com.Parameters.Add("@CategoryId", SqlDbType.VarChar).Value = category;
            com.Parameters.Add("@TOC", SqlDbType.VarChar).Value = TOC;
            com.Parameters.Add("@ID", SqlDbType.VarChar).Value = id;
            con.Open();
            com.ExecuteNonQuery();
            con.Close();
            HttpPostedFileBase file = this.HttpContext.Request.Files[0];
            string path = Server.MapPath("~/Images/BookCovers/" + isbn + ".jpg");
            file.SaveAs(path);
            return this.RedirectToAction("BookList");
        }

view中的代码：

       <form enctype="multipart/form-data" method="post">
       <style>
       #author
       {
           width:300px;
       }
        #title
       {
           width:300px;
       }
        #publisher
       {
           width:300px;
       }
        #category
       {
           width:300px;
       }
       #aurhorDescription
       {
           width :600px;
       }
       #contentDescription
       {
           width :600px;
       }
       </style>
    <table style="width: 100%;">
        <tr>
            <td style="width: 102px">
                书名
            </td>
            <td>
                <%=Html.TextBox("title", book.Title)%>
            </td>
        </tr>
        <tr>
            <td style="width: 102px">
                作者
            </td>
            <td>
                <%= Html.TextBox("author", book.Author)%>
            </td>
        </tr>
        <tr>
            <td style="width: 102px">
                封面
            </td>
            <td>
                <img src='/Images/BookCovers/<%= book.ISBN %>.jpg' />
                <input type="file" name = "Cover" />
            </td>
        </tr>
        <tr>
            <td style="width: 102px">
                ISBN
            </td>
            <td>
                <%= Html.TextBox("isbn", book.ISBN)%>
            </td>
        </tr>
        <tr>
            <td style="width: 102px">
                出版社
            </td>
            <td>
           <asp:DropDownList ID="publisher" runat="server" DataTextField="Name" DataValueField="ID">
        </asp:DropDownList>
        
            <%=Html.Hidden("publisher", book.PublisherId)%>
            </td>
        </tr>
        
        <tr>
            <td style="width: 102px">
                分类
            </td>
            <td>
                
           <asp:DropDownList ID="category" runat="server" DataTextField="Name" DataValueField="ID">
        </asp:DropDownList>
            <%=Html.Hidden("category", book.CategoryId)%>
            </td>
        </tr>
        <tr>
            <td style="width: 102px">
                目录
            </td>
            <td>
         <FTB:FreeTextBox ID="TOC" runat="server" >
                </FTB:FreeTextBox>
            <%=Html.Hidden("TOC")%>
                
            </td>
        </tr>
        <tr>
            <td style="width: 102px">
                作者简介
            </td>
            <td>
                <%= Html.TextArea("aurhorDescription", book.AurhorDescription)%>
            </td>
        </tr>
        <tr>
            <td style="width: 102px">
                摘要
            </td>
            <td>
                <%= Html.TextArea("contentDescription", book.ContentDescription)%>
            </td>
        </tr>
    </table>
    <input type="submit" value="提交" onclick="return getData()" />
    <script language ="javascript">
        function getData() {
            document.getElementById("category").value = document.getElementById("ctl00_MainPlaceHolder_category").value;
            document.getElementById("publisher").value = document.getElementById("ctl00_MainPlaceHolder_publisher").value;
            document.getElementById("TOC").value = document.getElementById("ctl00_MainPlaceHolder_TOC").value;
            return true;
        }
    </script>
    </form>