How to write in json format, class and object creation using VB.NET

Question

1.00/5 (1 vote)

See more:

{
    "Record": [
        {
            "Wagon_Details": [
                {
                    "Rake_No1": "",
                    "Rake_No2": "",
                    "Rake_ID": "",
                    "SL_No": "",
                    "Wagon_rly": "",
                    "Wagon_type": "",
                    "Wagon_no": "",
                    "Wagon_flag": "",
                    "Wagon_tare": "",
                    "Wagon_gross": "",
                    "Wagon_net": "",
                    "Wagon_over_load": " ",
                    "Speed": " ",
                    "No_of_axel": " ",
                    "MobileNumber": " ",
                    "Weigh_datetime": " ",
                    "Status_flag": " ",
                    "Remarks": " "
                }
            ],
            "Rake_Data": [
                {
                    "Rake_no1": " ",
                    "Rake_no2": " ",
                    "Rake_id": " ",
                    "Rake_name": " ",
                    "Local_id": " ",
                    "Sttn_from": " ",
                    "Sttn_to": " ",
                    "cnsg": " ",
                    "cnsr": " ",
                    "Arvl_time": " ",
                    "Line_no": " ",
                    "Lead_loco": " ",
                    "Actlunts": " ",
                    "No_of_wagon": " ",
                    "Commmodity": " ",
                    "Fois_save_datetime": " ",
                    "Loaded_on": " ",
                    "Status_flag": " ",
                    "Gross_datetime": " ",
                    "Tare_datetime": " ",
                    "Last_print": " ",
                    "Direction": " ",
                    "Total_net": " ",
                    "Gross_by": " ",
                    "Merged_by": " ",
                    "Tare_by": " ",
                    "Added_by": " ",
                    "Weigh_type": " ",
                    "Weigh_start": " ",
                    "Weigh_end": " ",
                    "Weigh_mode": " ",
                    "T_id": " ",
                    "G_id": " "
                }
            ]
        }
    ]
}

What I have tried:

Yes,I am try, but not done, I am new in impelementing API In VB.net

Posted 25-May-22 19:47pm

Member 11004533

Updated 25-May-22 20:02pm

OriginalGriff

v2

Add a Solution

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

OriginalGriff · Answer 1 · 2022-05-25T20:02:00

Solution 1

What you have created isn't really JSON - it's a "map" of a couple of objects which almost certainly have the wrong value types embedded in them.

JSON isn't about "class descriptions" it's about data transfer - a JSON text is a set of object instances which can be rebuilt into the same classes at the destination.

Your JSON sample can't do that: every field in the class would be of type object or string, instead of DateTime, int, or double

What I'd suggest is that you get actual data samples, and feed them to an online converter like this one: JSON Utils: Generate C#, VB.Net, SQL TAble and Java from JSON[^] which will give you VB Classes you can modify to the correct datatypes.
Then use a JSON reader in your app (I use Json.NET - Newtonsoft[^] which you can add via NuGet) to deserialize the data directly into useful class instances.

Posted 25-May-22 20:02pm

OriginalGriff

Comments

Member 11004533 26-May-22 2:08am

Actually, I am implement rest API using VB.NET, when i call API and sent the data to server, the data format should be in JSON format, details given below

https://xxxttyyy.weeebuuu.in:8000/RESTAdapter/XPI/XYZDetails
Credentials

User Id-USERNAME
Pass-myP@ssw0rd

{
"Record": [
{
"Wagon_Details": [
{
"Rake_No1": "",
"Rake_No2": "",
"Rake_ID": "",
"SL_No": "",
"Wagon_rly": "",
"Wagon_type": "",
"Wagon_no": "",
"Wagon_flag": "",
"Wagon_tare": "",
"Wagon_gross": "",
"Wagon_net": "",
"Wagon_over_load": " ",
"Speed": " ",
"No_of_axel": " ",
"MobileNumber": " ",
"Weigh_datetime": " ",
"Status_flag": " ",
"Remarks": " "
}
],
"Rake_Data": [
{
"Rake_no1": " ",
"Rake_no2": " ",
"Rake_id": " ",
"Rake_name": " ",
"Local_id": " ",
"Sttn_from": " ",
"Sttn_to": " ",
"cnsg": " ",
"cnsr": " ",
"Arvl_time": " ",
"Line_no": " ",
"Lead_loco": " ",
"Actlunts": " ",
"No_of_wagon": " ",
"Commmodity": " ",
"Fois_save_datetime": " ",
"Loaded_on": " ",
"Status_flag": " ",
"Gross_datetime": " ",
"Tare_datetime": " ",
"Last_print": " ",
"Direction": " ",
"Total_net": " ",
"Gross_by": " ",
"Merged_by": " ",
"Tare_by": " ",
"Added_by": " ",
"Weigh_type": " ",
"Weigh_start": " ",
"Weigh_end": " ",
"Weigh_mode": " ",
"T_id": " ",
"G_id": " "
}
]
}
]
}

OriginalGriff 26-May-22 3:26am

Fine - so create the date in appropriate classes, then use Newtonsoft to serialize the actual instance(s) to a JSON string.

What part of this is giving you difficulties?