I have tried these
and
Optional query string parameters in URITemplate in WCF
But nothing works for me. Here is my code:
[WebGet(UriTemplate = "RetrieveUserInformation/{hash}/{app}")]
public string RetrieveUserInformation(string hash, string app)
{
}
It works if the parameters are filled up:
https://127.0.0.1/Case/Rest/Qr/RetrieveUserInformation/djJUd9879Hf8df/Apple
But doesn't work if app
has no value
https://127.0.0.1/Case/Rest/Qr/RetrieveUserInformation/djJUd9879Hf8df
I want to make app
optional. How to achieve this?
Here is the error when app
has no value:
Endpoint not found. Please see the service help page for constructing valid requests to the service.
You have two options for this scenario. You can either use a wildcard (*
) in the {app}
parameter, which means "the rest of the URI"; or you can give a default value to the {app}
part, which will be used if it's not present.
You can see more information about the URI Templates at http://msdn.microsoft.com/en-us/library/bb675245.aspx, and the code below shows both alternatives.
public class StackOverflow_15289120
{
[ServiceContract]
public class Service
{
[WebGet(UriTemplate = "RetrieveUserInformation/{hash}/{*app}")]
public string RetrieveUserInformation(string hash, string app)
{
return hash + " - " + app;
}
[WebGet(UriTemplate = "RetrieveUserInformation2/{hash}/{app=default}")]
public string RetrieveUserInformation2(string hash, string app)
{
return hash + " - " + app;
}
}
public static void Test()
{
string baseAddress = "http://" + Environment.MachineName + ":8000/Service";
WebServiceHost host = new WebServiceHost(typeof(Service), new Uri(baseAddress));
host.Open();
Console.WriteLine("Host opened");
WebClient c = new WebClient();
Console.WriteLine(c.DownloadString(baseAddress + "/RetrieveUserInformation/dsakldasda/Apple"));
Console.WriteLine();
c = new WebClient();
Console.WriteLine(c.DownloadString(baseAddress + "/RetrieveUserInformation/dsakldasda"));
Console.WriteLine();
c = new WebClient();
Console.WriteLine(c.DownloadString(baseAddress + "/RetrieveUserInformation2/dsakldasda"));
Console.WriteLine();
Console.Write("Press ENTER to close the host");
Console.ReadLine();
host.Close();
}
}
A complementary answer regarding default values in UriTemplate
s using query parameters. The solution proposed by @carlosfigueira works only for path segment variables according to the docs.
Only path segment variables are allowed to have default values. Query string variables, compound segment variables, and named wildcard variables are not permitted to have default values.
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With