The Each method in jQuery is pretty useful and can be used to iterate through the elements within a jQuery object.
I’ve been using it recently to iterate through JavaScript arrays. It saves having to use a for loop and the code looks nicer.
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Previously I’d done JSON serialization using the JavaScriptSerializer which is part of AJAX Extensions 1.0, but this is now obsolete.
.NET 3.5 introduced the DataContractJsonSerializer class. The class sits in the System.Runtime.Serialization.Json namespace which is curiously hidden away in the System.ServiceModel.Web assembly.
The DataContractJsonSerializer can serialize a class that contains the Serializable attribute or any class defined as a DataContract.
The JavaScript inline if statement is identical to the one in C#:
var forename = (gender == 'male') ? 'Joe' : 'Emily';
I was using the StringBuilder to create a JSON string which included an array and therefore curly braces, but I got an exception as curly braces are used to define the parameters for the format.
sb.AppendFormat("{\"Forename\":\"{0}\",\"Surname\":\"{1}\"}", person.Forename, person.Surname);
At first I tried adding a backslash which is used to escape the quotation mark but this didn’t work, so I tried the double character trick but adding two curly braces which seems to do the job.
sb.AppendFormat("{{\"Forename\":\"{0}\",\"Surname\":\"{1}\"}}", person.Forename, person.Surname);
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In a previous post; Base Repository/Business Logic wrapper, I talked about a basic Linq to SQL Framework I created. I then extended it in my ObjectDataSource binding with paging and sorting post to show how to use it with the ObjectDataSource.
The problem was that although it worked quite nicely for getting all records and getting by ID, if I wanted to perform any specific filtering I had to create a derived repository class with a specific method for each query.
In this post I’ll explain how I have extended this framework using reflection to allow filtering on multiple columns without having to created separate repository objects.
