我的数据库中有一个表格如下:
[id] [uniqueidentifier] NOT NULL,
[user_id] [uniqueidentifier] NOT NULL,
[download_type] [nvarchar](50) NOT NULL,
[download_id] [nvarchar](50) NOT NULL,
[download_date] [datetime] NOT NULL,
[user_ip_address] [nvarchar](20) NOT NULL,
id
被定义为主键。
我想在此表中插入新记录。这是我无法开展工作的代码。
CustomerPortalEntities_Customer_Downloads dbcd = new CustomerPortalEntities_Customer_Downloads();
public ActionResult Download(string id)
{
var collection = new FormCollection();
collection.Add("user_id", Membership.GetUser().ProviderUserKey.ToString());
collection.Add("download_type", "Car");
collection.Add("download_id", id);
collection.Add("download_date", DateTime.Now.ToString());
collection.Add("user_ip_address", Request.ServerVariables["REMOTE_ADDR"]);
dbcd.AddToCustomer_Downloads(collection);
return Redirect("../../Content/files/" + id + ".EXE");
}
我得到的错误是在dbcd.AddToCustomer_Downloads(集合)行上;
'CustomerPortalMVC.Models.CustomerPortalEntities_Customer_Downloads.AddToCustomer_Downloads(CustomerPortalMVC.Models.Customer_Downloads)'的最佳重载方法匹配 有一些无效的论点
参数'1':无法从'System.Web.Mvc.FormCollection'转换为 'CustomerPortalMVC.Models.Customer_Downloads'
我需要做些什么来改变这项工作?
答案 0 :(得分:4)
您需要向方法CustomerPortalMVC.Models.Customer_Downloads
提供AddToCustomer_Downloads
类型的对象,然后在您的数据上下文中调用SaveChanges
,如下所示:
public ActionResult Download(string id)
{
var item = new CustomerPortalMVC.Models.Customer_Downloads();
item.user_id = Membership.GetUser().ProviderUserKey.ToString();
item.download_type = "Car";
item.download_id = id;
item.download_date = DateTime.Now.ToString();
item.user_ip_address = Request.ServerVariables["REMOTE_ADDR"];
dbcd.AddToCustomer_Downloads(item);
dbcd.SaveChanges();
return Redirect("../../Content/files/" + id + ".EXE");
}
答案 1 :(得分:1)
您需要创建Customer_Downloads类的实例,并将其传递给AddToCustomer_Downloads方法。错误消息告诉您该方法的接口需要Customer_Downloads对象,但您传递的是FormCollection对象。