Question

Console application

var result = dataService.CreateQuery<Customers>('GetCustomerByLastName').     AddQueryOption('lastname', 'S'); 

Service

    [WebGet]     public IQueryable<Customers> GetCustomerByLastName( string lastname )     {        return   from c in this.CurrentDataSource.Customers                 where c.LastName.StartsWith( lastname )                 select c ;      }                   

results in: (relative to http://localhost:1478/Apress.Data.Services.CustomerService.Host/)

RequestUri: CustomerDataService.svc/GetCustomerByLastName()?lastname=S

and fails as a result , because of parentheses in uri , which are not expected.

CustomerDataService.svc/GetCustomerByLastName?lastname=’S’

works in a browser.

VS 2008 SP1 .

Answer 1

It turned out the problem was not related to parentheses , I was missing string literal single quotes

should be

AddQueryOption('lastname', ''S''); 

but

GetCustomerByLastName()?lastname='S' 

and

GetCustomerByLastName?lastname='S' 

both correct for ADO.Net Data Services.