How Can I Access Data From External Json File in asp.net core?

Question

I want to access data from a json file in my file directory.

I have tried using StreamReader but it does not deserialize the data.

string json = r.ReadToEnd();

WorkFlowConfiguration items = 
    JsonConvert.DeserializeObject<WorkFlowConfiguration>(json);

Debug.WriteLine(items.WorkFlowAction);
Console.WriteLine(items.WorkFlowAction);

items.WorkFlowAction.ForEach(el => Console.WriteLine(el.ToString()));

Can you see the file content in string json variable after line1 of your code snippet? — user1672994
– user1672994, Commented Sep 19, 2019 at 4:16
What result do you get right now, and what were you expecting? — Kjartan
– Kjartan, Commented Sep 19, 2019 at 5:17
@rena thanks a lot for your cooperation. i got solved my problem. now it is working. problem was that accessing syntax. — Kelum Sampath Edirisinghe
– Kelum Sampath Edirisinghe, Commented Sep 23, 2019 at 6:59

Rena · Accepted Answer · 2019-09-19 08:30:29Z

2

There are two ways to get the external json file like below:

1.Model:

public class Test
{
    public string status { get; set; }
    public int code { get; set; }
    public string message { get; set; }
}

2.Json file:

  {
    "status": "succeess",
    "code": 1,
    "message": "login succeeded!"
  }

3.The first way(Use StreamReader):

using (StreamReader r = new StreamReader("C:\\test.json"))
    {
         string json = r.ReadToEnd();
         Test item =JsonConvert.DeserializeObject<Test>(json);
    }

4.The second way(Use File.ReadAllText):

var jsonString = System.IO.File.ReadAllText("C:\\test.json");
Test items =JsonConvert.DeserializeObject<Test>(jsonString);

edited Sep 19, 2019 at 8:30

answered Sep 19, 2019 at 8:23

Rena

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Comments

Avtandil Zenaishvili · Accepted Answer · 2019-09-19 07:32:09Z

0

if you want to access from startup class

"MySettings": {  
    "DbConnection": "abc",  
    "Email": "[email protected]",  
    "SMTPPort": "5605"  
  }  


public Startup(IConfiguration configuration)
{   
     var dbConnection= configuration["MySettings:DbConnection"];
}

or if you want in your controller, you must inject IConfiguration in you constructor

public UserController(IConfiguration configuration)  
{  
   configuration = configuration["MySettings:DbConnection"]; 
}

answered Sep 19, 2019 at 7:32

Avtandil Zenaishvili

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