How to do service WCF REST with a parameter array

Question

1.80/5 (2 votes)

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This is my class :

C#

<pre>[DataContract]
public class UserIdParams 
{
    [DataMember]
    public int UserId { get; set; }
    [DataMember]
    public List<int> ListUserId { get; set; }
}

it contains both a list of integer and an integer.

My goal is create the service WCF REST : GetUserByID to get list of users according to ids.

but as we know , we can't pass Array or complex types as input parameter. in wcf rest ,

(and when I test it like that, I have this error:

error-Query-String-Convertor — imgbb.com[^]

)

In other hand , it worked fine for WCF SOAP.

So any idea how to resolve my problem to get all users with WCF REST and the input parameter is an array ?

thanks,

What I have tried:

C#

[OperationContract]
  [WebGet]
  List<User> GetUserByID (UserIdParams userIdParams);

Posted 23-Sep-19 23:38pm

Member 14601214

Updated 25-Sep-19 2:18am

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F-ES Sitecore 24-Sep-19 5:59am

I googled "wcf rest array parameter" and found a few possible solutions. Would probably be quicker to just google it yourself and go through them.

Member 14601214 24-Sep-19 6:13am

sorry but i didn't find any solution fot this problem , and I try my code ..always the same problem..
In fact , all parameter is ok with rest but for input array parameter , it is very complicate

F-ES Sitecore 25-Sep-19 8:34am

Really? I just googled "wcf rest array parameter" and the second result was suggesting what was posted in Solution 1.

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dnxit · Accepted Answer · 2019-09-24T20:04:00

Usually GET operations support parameters on the path or the query string only so they're not suitable for complex types such as Lists or Arrays.

On the other hand you can pass a collection as a body parameter to a POST operation.

So you would have to either change the operation to a POST, or make the argument a delimited string that you can process on the server side to produce the array

C#

[DataContract]
public class UserIdParams 
{
    [DataMember]
    public int UserId { get; set; }
    [DataMember]
    public string DelimitedUserIds { get; set; }
}

// Then on Server do something like 

string DelimitedUserIds = "9,3,12,43,2"
List<int> UserIds = DelimitedUserIds .Split(',').Select(int.Parse).ToList();

Again I would suggest to make it a POST and send params in the body.