title: Pass JSON object to Web Method
body: <p>I wanted to shared something I learned today with you all. My question was:</p>
  
  <p>Can you pass a JSON object from JavaScript code to a .NET Page Method? For example:</p>
  
  <pre><code>  var task = { 
      Title: $("#titlenew input", $(newTaskRow)).val(), 
      StartDate: $("#startnew input", $(newTaskRow)).val(), 
      EndDate: $("#endnew input", $(newTaskRow)).val(), 
      EstimatedHours: $("#esthrsnew input", $(newTaskRow)).val(),
      PredecessorsOutlineNumbers: $("#depnew input", $(newTaskRow)).val(),
      OutlineNumber: $("#ordernew", $(newTaskRow)).text()
    };
    PageMethods.AddTask(task, saveNewTaskCompleted, saveNewTaskFailed);
  </code></pre>
  
  <p>And if you can, what type of .NET object should my web method accept?</p>
  
  <p>I found out that yes, you can pass a JSON object to a Page Method, and it comes across as a Dictionary(Of String, String). So my web method signature looks like this:</p>
  
  <pre><code>&lt;System.Web.Services.WebMethod()&gt; _
  Public Shared Sub AddTask(ByVal taskJson As Dictionary(Of String, String))
  
    Dim oTask As New Task()
    oTask.Title = taskJson("Title")
    ' all other accesses to the JSON object here
  
  End Sub
  </code></pre>