public override Task ExecuteBindingAsync(ModelMetadataProvider metadataProvider, HttpActionContext actionContext, CancellationToken cancellationToken)
{
// Set the binding result here
var request = System.Web.HttpUtility.ParseQueryString(actionContext.Request.RequestUri.Query);
var requestWrapper = new RequestWrapper(new NameValueCollection(request));
if (!string.IsNullOrEmpty(request["_xml"]))
{
var xmlType = request["_xml"].Split('.');
var xmlPath = string.Format("~/Views/Shared/Xml/{0}.xml", xmlType[xmlType.Length - 1]);
if (xmlType.Length > 1)
xmlPath = string.Format("~/Areas/{0}/Views/Shared/Xml/{1}.xml", xmlType);
requestWrapper.LoadSettingXml(xmlPath);
}
SetValue(actionContext, requestWrapper);
// now, we can return a completed task with no result
TaskCompletionSource<AsyncVoid> tcs = new TaskCompletionSource<AsyncVoid>();
tcs.SetResult(default(AsyncVoid));
return tcs.Task;
}