Error "The JSON value could not be converted to System.String. Path: $[1].Interests[1].Meta[9].Content | LineNumber: 0 | BytePositionInLine: 10073." - postgresql

Question

public Class Employee{
public string Name { get; set; }
[Column(TypeName = "jsonb")]
public List<Section> Sections { get; set; }
}
public Class Sections{
public string Booking { get; set; }
[Column(TypeName = "jsonb")]
public List<Interest> Interests { get; set; }
}
public Class Interest{
public string Title { get; set; }
public List<Meta> Meta { get; set; }
public List<WithAlt> Images { get; set; }
}
public Class Meta{
public string Type { get; set; }
public string Content { get; set; }
}
public Class WithAlt{
public string content { get; set; }
public string Alt { get; set; }
}
I fetch data from the Employee table
Employee while fetching the data Sections Column I got
The JSON value could not be converted to System.String. Path: $[1].Interests[1].Meta[9].Content | LineNumber: 0 | BytePositionInLine: 10073.
Error at
public Task<Employee> CheckEmployee(string name){
// error throw Line
var query= await catalogDbContext.Employee
.Where(i.Name === name)
.FirstOrDefault();
}
Not for all value but some value that List<Section> or
List<Interest> or List<Meta> or List<WithAlt> have null value
When I manually add the value to sections column bellow
{
"Booking": "",
"Interests":[
{
"Title":"",
"Meta":[
{
"Type" : " ",
"Content" : " "
}
],
"Images" : [
{
"content" : " ",
"alt" : " "
}
]
}
],
}
it will not throw the error
Are there any way to define the default value to the above fields using code first approach
when I initialize Sections property like
public List<Section> Sections { get; set; }={};
it shows the following error
Can only use array initializer expressions to assign to array types. Try using a new expression instead.
and also
public List<Section> Sections { get; set; }= new List<Section> Sections();
and
public List<Meta> Meta { get; set; }= = new List<Meta>();
and
public List<WithAlt> Images { get; set; }= new List<WithAlt>();
throw Error "The JSON value could not be converted to System.String. Path: $[1].Interests[1].Meta[9].Content | LineNumber: 0 | BytePositionInLine: 10073."

Answer 1

Can only use array initializer expressions to assign to array types. Try using a new expression instead.
You can convert the json data to Section type rather than List<Section> type.
var json = "{\"Booking\":\"\",\"Interests\":[{\"Title\":\"\",\"Meta\":[{\"Type\":\" \",\"Content\":\" \"}],\"Images\":[{\"content\":\" \",\"alt\":\" \"}]}]}";
var s = JsonConvert.DeserializeObject<Section>(json);
//If you want to set Employee.Sections with json data,try this
Employee e = new Employee { Sections = new List<Section> { s } };
Models(change class name Sections to Section,Interests to Interest):
public class Employee
{
public string Name { get; set; }
[Column(TypeName = "jsonb")]
public List<Section> Sections { get; set; }
}
public class Section
{
public string Booking { get; set; }
[Column(TypeName = "jsonb")]
public List<Interest> Interests { get; set; }
}
public class Interest
{
public string Title { get; set; }
public List<Meta> Meta { get; set; }
public List<WithAlt> Images { get; set; }
}
public class Meta
{
public string Type { get; set; }
public string Content { get; set; }
}
public class WithAlt
{
public string content { get; set; }
public string Alt { get; set; }
}

Answer 2

I just deserialiazed you json , everything is working properly, I couldn' t find any errros
public static void Main()
{
var json = "{\"Booking\":\"\",\"Interests\":[{\"Title\":\"\",\"Meta\":[{\"Type\":\" \",\"Content\":\" \"}],\"Images\":[{\"content\":\" \",\"alt\":\" \"}]}]}";
var jd = JsonConvert.DeserializeObject<Data>(json);
}
classes
public class Data
{
public string Booking { get; set; }
public List<Interest> Interests { get; set; }
}
public class Interest
{
public string Title { get; set; }
public List<Meta> Meta { get; set; }
public List<Image> Images { get; set; }
}
public class Meta
{
public string Type { get; set; }
public string Content { get; set; }
}
public class Image
{
public string content { get; set; }
public string alt { get; set; }
}