Is there a way to pass a list of JSON objects from JS to C#?
Solution 1
The combination of the 2 JSON statements above are, together, not valid JSON. That being said, you will not be able to use the JavaScriptSerializer class to deserialize that data into c# structure directly. Instead you will have to do some manual parsing first, to either break it down into valid JSON or just do full on manual parsing.
What I would actually recommend is sending over valid JSON instead. You can accomplish this by doing something like this:
{list: [
{type:"book" , author: "Lian", Publisher: "ABC"},
{type:"Newspaper", author: "Noke"} ]
Hard to say exactly, since only you know the details of your use case. You can send this data over using a traditional 'ajax' request. This is very easy to do with out any of the many JS libraries out there, but I would recommend just going with one anyway - they offer higher level constructs that are easier to use (and address cross-browser idiosyncrasies).
Since you are using ASP.NET MVC2, I would recommend jQuery. Microsoft is now backing jQuery as their JS library of choice and even make it default for new web projects.
Once you pass the above JSON to C#, you can deserialize it by doing something like this:
JavaScriptSerializer serializer = new JavaScriptSerializer();
var result = serialzer.Deserialize<Dictionary<string, object>>(postedJSONData);
Your result will then have a structure that looks like this, in C#:
Dictionary<string, object> result =>
{ "list" => object },
object => List<object>,
List<object> => Dictionary<string, object>
{ "type" => "book", "author" => "Lian" } // etc
Solution 2
[
{type:"book" , author: "Lian", Publisher: "ABC"},
{type:"Newspaper", author: "Noke"}
]
Is still valid JSON (well actually keys need to be enclosed in " as well), so you can .push()
into an array each time you create a JSON record.
var list = [];
// code doing other stuff
list.push({type:"book" , author: "Lian", Publisher: "ABC"});
// more code doing other stuff
list.push({type:"Newspaper", author: "Noke"})
Once your JSON list is constructed, you can send that list to the backend in one go.
user469652
Updated on June 05, 2022Comments
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user469652 almost 2 years
Something I'm confusing. The Javascript is going to produce the following JSON data.
{type:"book" , author: "Lian", Publisher: "ABC"} {type:"Newspaper", author: "Noke"}
This is only an example, actually I've got more than this.
Since I have common fields between different JSON data, so I don't know is it possible to pass this to C# at one time. What I want to do is pass this to c# then do some processing, what is the best way to do? I'm using ASP.NET MVC2.
Thanks for your answer or hints.