Catalog node relations

var client = new HttpClient()
  {
    BaseAddress = new Uri(ConfigurationManager.AppSettings["integrationUrl"])
  };
client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", token.AccessToken);		
var result = client.GetAsync("/episerverapi/commerce/nodes/{node code}/noderelations").Result.Content.ReadAsStringAsync().Result

[
  {
    "SortOrder"      : 0,
    "ParentNodeCode" : "Books",
    "ChildNodeCode"  : "Bottoms"
  }
]

var client = new HttpClient()
  {
    BaseAddress = new Uri(ConfigurationManager.AppSettings["integrationUrl"])
  };
client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", token.AccessToken);
client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("text/xml"));		
var result = client.GetAsync("/episerverapi/commerce/nodes/{node code}/noderelations").Result.Content.ReadAsStringAsync().Result

<ArrayOfNodeRelation xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <NodeRelation>
    <SortOrder>0</SortOrder>
    <ParentNodeCode>Books</ParentNodeCode>
    <ChildNodeCode>Bottoms</ChildNodeCode>
  </NodeRelation>
</ArrayOfNodeRelation>

var client = new HttpClient()
  {
    BaseAddress = new Uri(ConfigurationManager.AppSettings["integrationUrl"])
  };
client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", token.AccessToken);		
var result = client.GetAsync("/episerverapi/commerce/nodes/{node code}/noderelations/{childCode}").Result.Content.ReadAsStringAsync().Result

{
  "SortOrder"      : 0,
  "ParentNodeCode" : "Books",
  "ChildNodeCode"  : "Bottoms"
}

var client = new HttpClient()
  {
    BaseAddress = new Uri(ConfigurationManager.AppSettings["integrationUrl"])
  };
client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", token.AccessToken);
client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("text/xml"));		
var result = client.GetAsync("/episerverapi/commerce/nodes/{node code}/noderelations/{childCode}").Result.Content.ReadAsStringAsync().Result

<NodeRelation xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <SortOrder>0</SortOrder>
  <ParentNodeCode>Books</ParentNodeCode>
  <ChildNodeCode>Bottoms</ChildNodeCode>
</NodeRelation>

var model = new NodeRelation()
  {
    ChildNodeCode = "Bottoms",
    ParentNodeCode = "Books",
    SortOrder = 0
  };
var json = JsonConvert.SerializeObject(model);
var client = new HttpClient()
  {
    BaseAddress = new Uri(ConfigurationManager.AppSettings["integrationUrl"])
  };
client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", token.AccessToken);		
var result = client.PostAsync("/episerverapi/commerce/nodes/{node code}/noderelations", 
  new StringContent(json, Encoding.UTF8, "application/json")).Result.Content.ReadAsStringAsync().Result

{
  "SortOrder"      : 0,
  "ParentNodeCode" : "Books",
  "ChildNodeCode"  : "Bottoms"
}

var model = new NodeRelation()
  {
    ChildNodeCode = "Bottoms",
    ParentNodeCode = "Books",
    SortOrder = 0
  };
var client = new HttpClient()
 {
    BaseAddress = new Uri(ConfigurationManager.AppSettings["integrationUrl"])
  };
client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", token.AccessToken);
var serializer = new XmlSerializer(typeof(NodeRelation));
var xml = String.Empty;
using (var ms = new MemoryStream())
  {
    serializer.Serialize(ms, model);
    xml = Encoding.Default.GetString(ms.ToArray());
  } 
var result = client.PostAsync("/episerverapi/commerce/nodes/{node code}/noderelations", 
  new StringContent(xml, Encoding.UTF8, "text/xml")).Result.Content.ReadAsStringAsync().Result

<NodeRelation xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <SortOrder>0</SortOrder>
  <ParentNodeCode>Books</ParentNodeCode>
  <ChildNodeCode>Bottoms</ChildNodeCode>
</NodeRelation>

var model = new NodeRelation()
  {
    ChildNodeCode = "Bottoms",
    ParentNodeCode = "Books",
    SortOrder = 0
  };
var json = JsonConvert.SerializeObject(model);
var client = new HttpClient()
  {
    BaseAddress = new Uri(ConfigurationManager.AppSettings["integrationUrl"])
  };
client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", token.AccessToken);		
var result = client.PutAsync("/episerverapi/commerce/nodes/{node code}/noderelations/{childCode}",
  new StringContent(json, Encoding.UTF8, "application/json")).Result.Content.ReadAsStringAsync().Result

204 No Content

var model = new NodeRelation()
  {
    ChildNodeCode = "Bottoms",
    ParentNodeCode = "Books",
    SortOrder = 0
  };
var client = new HttpClient()
  {
    BaseAddress = new Uri(ConfigurationManager.AppSettings["integrationUrl"])
  };
client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", token.AccessToken);
var serializer = new XmlSerializer(typeof(NodeRelation));
var xml = String.Empty;
using (var ms = new MemoryStream())
  {
    serializer.Serialize(ms, model);
    xml = Encoding.Default.GetString(ms.ToArray());
  } 	
var result = client.PutAsync("/episerverapi/commerce/nodes/{node code}/noderelations/{childCode}",
  new StringContent(xml, Encoding.UTF8, "text/xml")).Result.Content.ReadAsStringAsync().Result

204 No Content

var client = new HttpClient()
  {
    BaseAddress = new Uri(ConfigurationManager.AppSettings["integrationUrl"])
  };
client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", token.AccessToken);		
var result = client.DeleteAsync("/episerverapi/commerce/nodes/{node code}/noderelations/{childCode}").Result.Content.ReadAsStringAsync().Result

{
  "SortOrder"      : 0,
  "ParentNodeCode" : "Books",
  "ChildNodeCode"  : "Bottoms"
}

var client = new HttpClient()
  {
    BaseAddress = new Uri(ConfigurationManager.AppSettings["integrationUrl"])
  };
client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Bearer", token.AccessToken);
client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("text/xml"));	
var result = client.DeleteAsync("/episerverapi/commerce/nodes/{node code}/noderelations/{childCode}").Result.Content.ReadAsStringAsync().Result

<NodeRelation xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
  <SortOrder>0</SortOrder>
  <ParentNodeCode>Books</ParentNodeCode>
  <ChildNodeCode>Bottoms</ChildNodeCode>
</NodeRelation>