Json validator in visual studio 2019

Question

Json validator in visual studio 2019

sravan kumar 121

Hi,

Im just wondering if there is any option in visual studio 2019 to validate the json files in the .Net solution or if there is any extension that it can perform the same.

Thanks,
Sravan kumar

Xingyu Zhao-MSFT 5,381 Reputation points

2020-10-20T07:24:31.09+00:00

Did you consider using code to validate the JSON file? If so, you can refer to the following reference: Validating with JSON Schema
sravan kumar 121 Reputation points

2020-10-22T04:29:38.157+00:00

@Xingyu Zhao-MSFT : Thanks for the reply.

But my situation is not to check using the code. We have set of .Json files which can be modified frequently. If there is any format issue , VS is not validating and we are getting run time errors, instead, if there is any option to check the format for .Json files (which should ignore inline comments) at compile time itself, that would be great.

Thanks,
Sravan kumar

1 answer

Your answer

Xingyu Zhao-MSFT 5,381 Reputation points

2020-10-20T07:24:31.09+00:00

Did you consider using code to validate the JSON file? If so, you can refer to the following reference: Validating with JSON Schema
sravan kumar 121 Reputation points

2020-10-22T04:29:38.157+00:00

@Xingyu Zhao-MSFT : Thanks for the reply.

But my situation is not to check using the code. We have set of .Json files which can be modified frequently. If there is any format issue , VS is not validating and we are getting run time errors, instead, if there is any option to check the format for .Json files (which should ignore inline comments) at compile time itself, that would be great.

Thanks,
Sravan kumar

Answer 1

Viorel 122.5K

If you open the JSON file, then general errors will be underlined.

You can also define a schema file and drag it to your JSON file, or enter the “$schema” property manually. Then Visual Studio will validate the file according to associated schema — see: https://visualstudiomagazine.com/articles/2018/01/24/json-messages-schema.aspx, for example.

What kind of validation do you need?

sravan kumar 121 Reputation points

2020-10-22T04:37:34.1+00:00

Hi @Viorel ,

Thanks for the reply.

We need to validate set of .Json files in the .Net solution ,which will be edited frequently, so we need to validate mainly its Json syntax and format which can have inline comments, at compile time itself, else it is giving runtime errors.

Thanks,
Sravan kumar
Viorel 122.5K Reputation points

2020-10-22T09:14:20.007+00:00

If you know how to validate the files programmatically, then maybe create a special tool (console application) that will check all your files at compile-time. It can be specified in Build Events, “Pre-build event command line” field of Project Properties. Enter the path to .exe tool using quotation marks.

If no errors found, your tool should end with ‘Environment.Exit(0)’.

In case of errors, your tool should end with ‘Environment.Exit(1)’. It can also display error messages like these:

Console.WriteLine( @"C:\MyFiles\File3.json (10,30): error: Invalid date" );
Console.WriteLine( @"C:\MyFiles\File9.json (17,22): error: Text too long" );

Visual Studio will show these messages in Error List and Output windows. Double click in Error List should bring you to the corresponding line of the file.

Share via

Json validator in visual studio 2019

1 answer

Your answer