Capturing SendGrid Events With ASP.NET WebAPI and Task async

  Problem I’ve been using SendGrid’s API WebHooks to capture email events (Version 1).  This version sends one event at a time which has always been a pretty bad idea.  When I first did the integration a year or so ago, the only way to capture multiple events at once was to consume some proprietary non-JSON like protocol.  I declined.  They finally have upgraded the API to send standard JSON records and are going to obsolete version 1 so I need to change.  Here goes… Send Grid Event Notification Configuration First, you need to go into Event Notification and change to (v3) of the config.  Then, I pressed the “Test Your Integration” button while running fiddler to grab the JSON SendGrid generates (see … Continue Reading

LINQ tricks for performance (LINQ2SQL Old School)

I’m working quite a bit on the new Silicon Valley Code Camp site these days and introducing lots of new ways to view sessions.  Much of this code I’ve written over 8 years ago, long before I had so many tricks in my bag. So, one of the things we track is session interest by attendee.  To do that we have two tables, SessionAttendee and Sessions. Doing a simple join and count of the number of SessionAttendee records per session pretty much gives us what we need. Basically, we create a dictionary so we can get all the counts at once so that way, just one sql to the database interestCountsDict = (from data in meta.SessionAttendee where data.Interestlevel == 2 group data by … Continue Reading

Collection Form Post Parameters in WebAPI Controller

There are lots of ways using ASP.NET MVC4 to collection passed in form parameters (POST) to the WebAPI Controller.  I’m not wanting to create a Model, I’m not wanting to get involved with dynamic variables, I just want the values that are posted in.  Say for example, my post looks like the following: To capture both sessionId and trackId, I can have a WebAPI controller in Visual Studio that looks just like this: namespace WebAPI.Api{ public class SessionRpcController : ApiController { [HttpPost] [ActionName("UpdateSessionTrack")] [Authorize(Roles = "admin")] public HttpResponseMessage PostUpdateSessionTrack( FormDataCollection formDataCollection) … Continue Reading

Simple DropDownList With Default Value Using ASP.NET MVC4, Razor and an HtmlHelper

First, the results of what you get.  Notice the URL parameter, the default value in the DropDownList and also the text value output on the page.   Visual Studio Project Project.zip Background I know a lot of us are struggling changing from ASP.NET WebForms to MVC4.  For me in particular, it’s been a struggle but I’m slowly seeing light at the end of the tunnel.  Our Silicon Valley Code Camp has been in the process of rewriting in MVC4 for the past many months, and with the help of contractors (and me), we are getting there.  Basically, the site has gone from: to The example I’m showing here is really based on just implementing a tag cloud manager. You can see an example of this in production and in … Continue Reading

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