I invested around 3 hours searching the google for any website or youtube VDO that would demonstrate how to read and store the "full json" as a variable and as well as store "individual elements" of a json to a model property... and, after my 3 hours of super searching on the net, I found your video really really AWESOME. it is EXTREMELY simple to understand and very nicely demonstrated. Please continue more of it.. and if the teachings and trainings are equally good, all viewers can also arrange for funding to facilitate this benefit.
After you have the object list of employees, you can use LINQ to query the list. For example: var emp = emps.Where(currEmp => currEmp.EmpId == 1).FirstOrDefault(); Then you can access the specific employee's email using: emp.Email
Hello, is there a way to deserialize a List of objects that are derived from an abstract class? i.e. I have an object with a List, and Car, Motorcycle and Bicycle inherited from Vehicle. How can i deserialize this? { "vehicles": [ { "type": "car", "numberOfWheels": 4, "numberOfDoors": 5 }, { "type": "bicycle", "numberOfWheels": 2 "color": "red", } ] } if in my API endpoint i ask for ([FromBody] ObjectWithListOfVehicles object) it'll throw an exception saying that I cannot instantiate an abstract class, but in reality it's a list of derived objects.
hi, thanks for your video, but i found a bug when I using your code, why when i write" var glove50s = JsonSerializer.Deserialize(jsonData1);" (jsonData1 is the String read from file), it shows an error on jsonData1 said "cannot convert from String to newtonsoft.Json.JsonReader"
The error message you are getting is a Newtonsoft exception but in my video, I'm using System.Text.Json, not newtonsoft. You must have a reference to the Newtonsoft NuGet package in your project which is not needed. Try creating a new project and not adding a reference to Newtonsoft and it will work. Otherwise, use the fully qualified namespace System.Text Json.
I invested around 3 hours searching the google for any website or youtube VDO that would demonstrate how to read and store the "full json" as a variable and as well as store "individual elements" of a json to a model property...
and, after my 3 hours of super searching on the net, I found your video really really AWESOME. it is EXTREMELY simple to understand and very nicely demonstrated.
Please continue more of it.. and if the teachings and trainings are equally good, all viewers can also arrange for funding to facilitate this benefit.
Nice tutorial. Keep going!
How would i request (for example) the email belonging to a certain employee?
After you have the object list of employees, you can use LINQ to query the list.
For example:
var emp = emps.Where(currEmp => currEmp.EmpId == 1).FirstOrDefault();
Then you can access the specific employee's email using:
emp.Email
thank you!
Hello, is there a way to deserialize a List of objects that are derived from an abstract class?
i.e. I have an object with a List, and Car, Motorcycle and Bicycle inherited from Vehicle.
How can i deserialize this?
{
"vehicles": [
{
"type": "car",
"numberOfWheels": 4,
"numberOfDoors": 5
},
{
"type": "bicycle",
"numberOfWheels": 2
"color": "red",
}
]
}
if in my API endpoint i ask for ([FromBody] ObjectWithListOfVehicles object) it'll throw an exception saying that I cannot instantiate an abstract class, but in reality it's a list of derived objects.
thx
I loved this video, but how i can make the same process with values of the type 'int' in my json file.
For the int values don't use double quotes in the JSON file and in your class declare the property data type as int.
{
"IntProperty": 100
}
@@MaxLevelCode Alright man, thanks for your answer
How to serialize a string read from text file in c#
hi, thanks for your video, but i found a bug when I using your code,
why when i write" var glove50s = JsonSerializer.Deserialize(jsonData1);" (jsonData1 is the String read from file), it shows an error on jsonData1 said "cannot convert from String to newtonsoft.Json.JsonReader"
The error message you are getting is a Newtonsoft exception but in my video, I'm using System.Text.Json, not newtonsoft. You must have a reference to the Newtonsoft NuGet package in your project which is not needed. Try creating a new project and not adding a reference to Newtonsoft and it will work. Otherwise, use the fully qualified namespace System.Text Json.
@@MaxLevelCode i have to use using Newtonsoft.Json