Adding entries with links

Insert a product with associated category specified by CategoryID

var category = client
    .From("Categories")
    .InsertEntry(new
    { 
        CategoryName = "Test3"
    });
var product = client.InsertEntry("Products", new
    { 
        ProductName = "Test4", 
        UnitPrice =18m,
        CategoryID = category["CategoryID],
    });
Assert.Equal("Test4", product["ProductName"]);
Assert.Equal(category["CategoryID"], product["CategoryID"]);

Request URI: POST Products
Request content:

<entry xmlns:d="http://schemas.microsoft.com/ado/2007/08/dataservices" xmlns:m="http://schemas.microsoft.com/ado/2007/08/dataservices/metadata" xmlns="http://www.w3.org/2005/Atom">
  <title />
  <updated>2012-10-08T14:41:14.7420000Z</updated>
  <author>
    <name />
  </author>
  <id />
  <content type="application/xml">
    <m:properties>
      <d:ProductName>Test4</d:ProductName>
      <d:UnitPrice m:type="Edm.Decimal">18</d:UnitPrice>
      <d:CategoryID m:type="Edm.Int32">10</d:CategoryID>
    </m:properties>
  </content>
</entry>

---

Insert a product with associated category specified by category object

using Entry = System.Collections.Generic.Dictionary<string, object>;
var category = client
    .For("Categories")
    .InsertEntry(new 
    { 
        CategoryName = "Test5"
    });
var product = client.InsertEntry("Products", new
    { 
        ProductName = "Test6", 
        UnitPrice = 18m,
        Category = category,
    });
Assert.Equal("Test6", product["ProductName"]);
Assert.Equal(category.CategoryID, product.CategoryID);

Request URI: POST Products
Request content:

<entry xmlns:d="http://schemas.microsoft.com/ado/2007/08/dataservices" xmlns:m="http://schemas.microsoft.com/ado/2007/08/dataservices/metadata" xmlns="http://www.w3.org/2005/Atom">
  <title />
  <updated>2012-10-08T14:43:54.5200000Z</updated>
  <author>
    <name />
  </author>
  <id />
  <content type="application/xml">
    <m:properties>
      <d:ProductName>Test6</d:ProductName>
      <d:UnitPrice m:type="Edm.Decimal">18</d:UnitPrice>
    </m:properties>
  </content>
  <link rel="http://schemas.microsoft.com/ado/2007/08/dataservices/related/Category" type="application/atom+xml;type=Entry" title="Category" href="Categories(11)" />
</entry>

---

See also:
Adding entries
Linking and unlinking entries
Modifying data