Json file parse and read data

Question

I Have Json File like Below

{
"Login ID":
{
"in": "?????? ???"
},
"Password": {
"in": "?????????"
},
"User Name": {
"in": "??????? ?????"
}
}


I Have to Load this Json File and when is pass "Login ID" as parameter i should get return "?????? ???" .

But here First string like ("Login ID") is not like fixed there may be many string come.

 

 

I am not getting how to do

in C# or in java script any one platform it possible please help me