Batching is a feature that facilitates sending HTTP requests in a batch so that the number of round trips to the server are reduced and the consumer of the data service's performance is increased. To use this feature, use a method called ExecuteBatch that accepts one of more DataServiceRequest instances as a parameter. Here is an example:
var dataServiceProxy = new PayrollDataContext(new Uri("http://localhost:1156/PayrollDataService.svc"));
dataServiceProxy.MergeOption = MergeOption.AppendOnly;
var employees = from emp in dataServiceProxy.Employee select emp;
var employeesUri = new Uri(employees.ToString());
var departments = from dept in dataServiceProxy.Department select dept;
var departmentsUri = new Uri(departments.ToString());
var result = dataServiceProxy.ExecuteBatch(
new DataServiceRequest<Employee>(employeesUri),
new DataServiceRequest<Department>(departmentsUri));
foreach (var r in result)
{
QueryOperationResponse...