CODEWITHSUNDEEP
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jsonGPPD
jsonGPPD

Reputation: 1037

C# - Supply ViewModel from JSON string result

Good day,

I need a help in extracting JSON string and supply it on my view model.

In my example, I have a ViewModel that has 2 classes.

Classes:

public class Student {
    public int StudentId {get;set;}
    public string Firstname {get;set;}
    public string Lastname {get;set;}
}

public class Address {
    public int AddressId {get;set;}
    public string Street {get;set;}
}

ViewModel:

public class StudentAddressViewModel{
    public Student Student {get;set;}
    public Address Address {get;set}
}

Controller:

public async Task<IActionResult> Create(IFormCollection studentInfo){
    // wherein studentInfo is the key
    ...
}

In my controller, I'm sending this JSON string.

{[studentInfo,{"Student":{"firstname":"Johhny","lastname":"Bravo"},"Address":{"street":"New york street..."}])

I'm trying this:

var studentInfo = studentInfo["studentInfo"];

var value = JsonConvert.DeserializeObject<Dictionary<string,string>>(studentInfo);

var studentVm = new StudentAddressViewModel{
    new Student{
        Firstname: value["firstname"], Lastname: value["lastname"]
    },
    new Address{
        Address: value["address"]
    }
}

But I'm having a null value.

Any help, please?

Upvotes: 1

Views: 1934

Answers (1)

mark333...333...333
mark333...333...333

Reputation: 1360

Try to supply directly your ViewModel in your DeserializeObject instead of Dictionary.

var studentInfo = studentInfo["studentInfo"];
var value = JsonConvert.DeserializeObject<StudentAddressViewModel>(studentInfo);

Then call each model directly.

var studentVm = new StudentAddressViewModel{
    Student = value.Student,
    Address = value.Address
}

I hope this helps others as well.

Upvotes: 4

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