Using CRM WebAPI to execute GetAllTimeZonesWithDisplayName function

Question

I'm trying to execute the GetAllTimeZonesWithDisplayName function to retrieve the current user's timezone; however I'm having some difficulties

I've been following this blog but something seems to have changed. According to the author I should be able to go:

/api/data/v8.2/GetAllTimeZonesWithDisplayName(LocaleId=1033)

but this results in an error like:

{   
  "error":
  {
    "code":"",
    "message":"Resource not found for the segment 'GetAllTimeZonesWithDisplayName'.",
    "innererror":{
      "message":"Resource not found for the segment 'GetAllTimeZonesWithDisplayName'.",
      "type":"Microsoft.OData.Core.UriParser.ODataUnrecognizedPathException"
      ,"stacktrace":...
    }
  } 
}

So I had a look in the metadata (/api/data/v8.2/$metadata) and I can see that this method requires two parameters (I think)

<Function Name="GetAllTimeZonesWithDisplayName" IsBound="true">
  <Parameter Name="entityset" Type="Collection(mscrm.timezonedefinition)" Nullable="false"/> 
  <Parameter Name="LocaleId" Type="Edm.Int32" Nullable="false"/> 
  <ReturnType Type="Collection(mscrm.crmbaseentity)" Nullable="false"/> 
</Function>

But I don't know what is required for the entityset parameter and it doesn't seem to be listed in the MSDN documentation

Answer 1

The function, according to a metadata, is bound to an entityset Parameter Name="entityset" Type="Collection(mscrm.timezonedefinition)" Nullable="false"/> means you should start it from the set. And, I don't know why, usage of bound functions requires full function name so the result will be:

/api/data/v8.2/timezonedefinitions/Microsoft.Dynamics.CRM.GetAllTimeZonesWithDisplayName(LocaleId=1033)