我使用WCF从实体框架中查询这个数据,我想使用手机客户端的数据,我可以知道如何从WCF函数查询多个数据类型?返回多个数据类型
[OperationContract]
string LoginUser(string email, string password);
IService.cs
public string LoginUser(string email, string password)
{
string query = @"SELECT VALUE tblUser FROM MyEntities.tblUsers AS tblUser WHERE tblUser.email = @email AND tblUser.password = @password";
ObjectParameter[] parameters = new ObjectParameter[2];
parameters[0] = new ObjectParameter("email", email);
parameters[1] = new ObjectParameter("password", password);
using (var context = new SteamKingEntities())
{
ObjectQuery<string> results = context.CreateQuery<string>(query, parameters);
foreach (string result in results)
{
if (result != null)
{
return result;
}
}
}
return null;
}
IService.svc.cs
public Login()
{
InitializeComponent();
_serviceClient = new Service1Client();
_serviceClient.LoginUserCompleted += new EventHandler<LoginUserCompletedEventArgs>(_serviceClient_LoginUserCompleted);
}
private void loginBtn_Click(object sender, RoutedEventArgs e)
{
_serviceClient.LoginUserAsync(txtEmail.Text, txtPassword.Password);
}
private void _serviceClient_LoginUserCompleted(object sender, LoginUserCompletedEventArgs e)
{
if (e.Error == null && e.Result != null)
{
MessageBox.Show("Welcome " + e.Result + "!");
}
else
{
MessageBox.Show(e.Error.Message + " Couldn't Login, Please try again =D");
}
}
Login.xaml.cs
我想从实体框架返回整个表格,并允许我在Window Phone一边逐一处理。
我想我需要做一些修改的IService方面,但我真的不知道如何,因为我是新手机开发和习惯Linq到SQL。你能指导我如何制作类似的回报,请。谢谢。
更新
的错误,我得到There was an error while trying to deserialize parameter http://tempuri.org/:LoginUserResult. Please see InnerException for more details.
我修改的代码到WCF Custom Object陈述的方式,但我不能反序列化。我想这个问题从WP的部分来了, 我怎么反序列化结果?
我不明白你的类型w ant返回 – ivowiblo
这是我得到的错误:从物化的'WCFServiceWebRole1.tblUser'类型到'System.String'类型的指定强制转换无效。 – 1myb
什么在InnerException?你刷新了服务参考吗? – gabba