I have a valid JSON object that contains multiple "en-US" keys, which I'm trying select. For that purpose I use the JsonPath
"$..en-US"
which is given to the SelectTokens procedure implemented by the Json.NET. It's a JSON framework for .NET . Everything is working fine and well as long as my JSON doesn't contain any empty array. Here's an example:
var myJsonPath = "$..en-US";
var myJson =
@"{
'controls': [
{
'messages': {
'addSuggestion': {
'en-US': 'Add'
}
}
},
{
'header': {
'controls': []
},
'controls': [
{
'controls': [
{
'defaultCaption': {
'en-US': 'Sort by'
},
'sortOptions': [
{
'label': {
'en-US': 'Name'
}
}
]
}
]
}
]
}
]
}";
var jToken = JObject.Parse(myJson);
var tokens = jToken.SelectTokens(myJsonPath);
Here, the tokens variable will contain just one element! That will be the "en-US" occurence BEFORE the empty array in the 'controls' of the 'header' object. However, when I just leave this 'header' object out:
var myJson =
@"{
'controls': [
{
'messages': {
'addSuggestion': {
'en-US': 'Add'
}
}
},
{
'controls': [
{
'controls': [
{
'defaultCaption': {
'en-US': 'Sort by'
},
'sortOptions': [
{
'label': {
'en-US': 'Name'
}
}
]
}
]
}
]
}
]
}";
I will get all the 3 occurencies of the "en-US" as expected. Btw, if I validate my JsonPath on the first JSON object (i.e. which contains an empty array) in an online tool, then as expected, I get all the three "en-US" cases. This diverges from what I'm getting from the Json.NET. I'm wondering whether it's a bug or do I have to handle this case manually somehow?
This is a bug that has been fixed. Upgrade to the latest version of Json.NET.