(1)登陆成功，根据登录信息，操作员的Id放到应用程序范围的键值对中。

new T_OperationLogDAL().Insert(op.Id,"登录成功");

Application.Current.Properties["OperatorId"]=op.Id;//应用程序范围的键值对

(2)CommonHelper中增加一个取得当前操作员的Id的方法：

public static Guid GetOperatorId()

{

return (Guid)Application.Current.Properties["OperatorId"];

}

(3)调用该方法就可以取得当前的操作员Id了

if (IsAddNew)

{

Employee employee = (Employee)gridEmployee.DataContext;

new EmployeeDAL().Insert(employee);

Guid operatorId = CommonHelper.GetOperatorId();

new T_OperationLogDAL().Insert(operatorId, "新增员工" + employee.Name);

}