问题：执行删除操作时候，出现异常但是“由于安全限制，无法访问类型System.Runtime.Remoting.ObjRef”,请问错误出在哪？如何解决？
详细的情况如下：
1、先定义了一个接口
public interface IDataBaseOperator
{
int Update( object sender );
int Add( object sender );
int Delete( object sender );
DataSet Select( string selectCondition, bool selMode );
}
用于对数据库执行4种操作
2、然后在定义一远程对象
public class Customers: MarshalByRefObject,IDataBaseOperator
3、构建宿主程序，使用配置文件
<?xml version="1.0" encoding="utf-8" ?>
<configuration>
<system.runtime.remoting>
<application>
<service>
<wellknown
mode="SingleCall"
type="CustomersLibrary.Customers, CustomersLibrary"
objectUri="Customers" />
</service>
<channels>
<channel port="8086" ref="tcp"/>
</channels>
<!--leaseManagerPollTime="7S"-->
<lifetime
leaseTime="7M"
sponsorshipTimeout="7M"
renewOnCallTime="7M"
/>
</application>
</system.runtime.remoting>
</configuration>
4、构建客户端，也使用配置文件
<?xml version="1.0" encoding="utf-8" ?>
<configuration>
<system.runtime.remoting>
<application>
<client>
<wellknown type="Customers, CustomersLibrary" url="tcp://192.168.1.18:8086/Customers" />
</client>
<channels>
<channel ref="tcp" port="0"></channel>
</channels>
</application>
</system.runtime.remoting>
</configuration>
执行操作
{
RemotingConfiguration.Configure( AppDomain.CurrentDomain.SetupInformation.ConfigurationFile );
Customers obj2 = new Customers();
if (obj2 == null)
{
System.Console.WriteLine(
"Could not locate TCP server");
}
try
{
obj2.ID = "123456-123456";
obj2.Delete(obj2);
}
catch ( Exception ex )
{
MessageBox.Show(ex.Message);
}
}
但是系统提示“由于安全限制，无法访问类型System.Runtime.Remoting.ObjRef”,请问错误出在哪？如何解决？谢谢！