HTTP Put is not working for me in MVC 4 Web API. I keep getting a 404 - rest

Question

var assetimage_id = $(this).closest(".assetImageWrapper").attr("data-assetimage_id");
var dataToSend = JSON.stringify({ "Asset_ID": assetimage_id, "Description": $(this).val() });
$.ajax({
url: "/api/Assets/UpdateDescription",
type: "PUT",
contentType: "application/json; charset=utf-8",
dataType: "json",
data: dataToSend,
success: function (data) {
alert("success");
}
});
And here is the method that it is supposed to hit.
[HttpPut]
public Asset UpdateDescription(int Asset_ID, string Description)
{
return new AssetsService().UpdateAssetDescription(Asset_ID, Description);
}
What looks out of whack? The method is setting in a Web API controller called Assets. All other methods work fine from it (GETS, POSTS). This is when I'm running it by hitting F5 in Visual Studio 2012, so no IIS configuration was changed. the Api route is what the default route is.
And my web.config supports all verbs:

Answer 1

by default, simple types like 'Asset_ID' above and also string 'Description' are binded from Uri. In you scenario you seem to sending the content in the body, so you would need to change your api signature accordingly. BTW, you also cannot have multiple FromBody parameters on your action.
For a complex model, you need a view model created to contain them:
Once created:
public class AssetEstimatedValueUpdate
{
public int Asset_ID { get; set; }
public string EstimatedValue { get; set; }
}
Then you can pass it in and all works well.
[HttpPut]
public Asset UpdateDescription(AssetDescriptionUpdate _AssetDescriptionUpdate)
{
return new AssetsService().UpdateAssetDescription(_AssetDescriptionUpdate.Asset_ID, _AssetDescriptionUpdate.Description);
}