Question

I have this code to deserialize this json but i keep getting this error:

“Cannot convert object of type System.String to type
Namespace.Models.Url”

. The json structure is as below:

[ { fileUrl: “localhost/ContentManager/get/ovYWB0/81/wallpaper” }, {
fileUrl: “localhost/ContentManager/get/AcjwO0/81/wallpaper” }, {
fileUrl: “localhost/ContentManager/get/HCR0q0/81/wallpaper” }
]

The class i am mapping to is as below:

public class Url
{
    public string FileUrl { get; set; }
}

public class Response
{
    public Url FileUrl { get; set; }
}

The deserializing code is as below:

var serializer = new JavaScriptSerializer();
IList<MTContribute> data = new List<MTContribute>();

var items = serializer.Deserialize<List<Response>>(json);
foreach (var item in items)
{
    var newData = new MTContribute
    {
        DateCreated = DateTime.Today,
        IsActive = Convert.ToBoolean("True"),
        MTContributeCategoryId = Category.MTContributeCategoryId,
        Url = item.FileUrl.FileUrl
    };

    data.Add(newData);
}

Answer 1

According your current json structure this should work

var items = serializer.Deserialize<List<Url>>(json); // Url instead of Response

if this won’t work for you, you have to change the json structure in order to reflect the structure of Response class.

Unless I missed something, this is the necessary json structure

[{ fileUrl:{ fileUrl: "localhost/ContentManager/get/ovYWB0/81/wallpaper" }}]