Asp.Net Web Api 2 Json deserialization parsing unquoted character
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I am trying to understand a deserialization quirk around an invalid json request when trying to set a double with unquoted values. Given the example controller
public class TestController : ApiController
{
public IHttpActionResult Post([FromBody] Foo foo)
{
return Ok();
}
}
public class Foo
{
public string StringOne { get; set; }
public double Bah { get; set; }
public string StringTwo { get; set; }
}
The valid case with a JSON object such as:
{
"StringOne": "Lorem",
"Bah" : 1.2,
"StringTwo" : "Ipsum"
}
will build a foo object as you would expect, setting all three values correctly. The following invalid JSON will result in foo being set to null. Again this seems expected
{
"StringOne": "Lorem",
"Bah" : ThisIsntRight,
"StringTwo" : "Ipsum"
}
However when the following JSON is used
{
"StringOne": "Lorem",
"Bah" : Q,
"StringTwo" : "Ipsum"
}
foo is deserialized and Bah has a value of 0. I expected this to behave like the second example and to have foo set to null. I was hoping to understand what is going on in this case.
Note: This was recreated with the default empty web.api project and adding the above Controller.
c# json asp.net-web-api2
asked Nov 27 '18 at 0:02
Paul WildPaul Wild
16318
add a comment |
I am trying to understand a deserialization quirk around an invalid json request when trying to set a double with unquoted values. Given the example controller
public class TestController : ApiController
{
public IHttpActionResult Post([FromBody] Foo foo)
{
return Ok();
}
}
public class Foo
{
public string StringOne { get; set; }
public double Bah { get; set; }
public string StringTwo { get; set; }
}
The valid case with a JSON object such as:
{
"StringOne": "Lorem",
"Bah" : 1.2,
"StringTwo" : "Ipsum"
}
will build a foo object as you would expect, setting all three values correctly. The following invalid JSON will result in foo being set to null. Again this seems expected
{
"StringOne": "Lorem",
"Bah" : ThisIsntRight,
"StringTwo" : "Ipsum"
}
However when the following JSON is used
{
"StringOne": "Lorem",
"Bah" : Q,
"StringTwo" : "Ipsum"
}
foo is deserialized and Bah has a value of 0. I expected this to behave like the second example and to have foo set to null. I was hoping to understand what is going on in this case.
Note: This was recreated with the default empty web.api project and adding the above Controller.
c# json asp.net-web-api2
asked Nov 27 '18 at 0:02
Paul WildPaul Wild
16318
Have you trieddecimalinstead ofdouble?
– Hanjun Chen
Nov 27 '18 at 4:11
decimalhas the same behaviour
– Paul Wild
Nov 27 '18 at 9:11
What happens if you send two letters? could it be because it tries to parse it as a char?
– Pablo Ferro
Nov 27 '18 at 14:08
Two letters will return a null object. So some char related magic seems like a good bet
– Paul Wild
Nov 27 '18 at 20:34
add a comment |
I am trying to understand a deserialization quirk around an invalid json request when trying to set a double with unquoted values. Given the example controller
public class TestController : ApiController
{
public IHttpActionResult Post([FromBody] Foo foo)
{
return Ok();
}
}
public class Foo
{
public string StringOne { get; set; }
public double Bah { get; set; }
public string StringTwo { get; set; }
}
The valid case with a JSON object such as:
{
"StringOne": "Lorem",
"Bah" : 1.2,
"StringTwo" : "Ipsum"
}
will build a foo object as you would expect, setting all three values correctly. The following invalid JSON will result in foo being set to null. Again this seems expected
{
"StringOne": "Lorem",
"Bah" : ThisIsntRight,
"StringTwo" : "Ipsum"
}
However when the following JSON is used
{
"StringOne": "Lorem",
"Bah" : Q,
"StringTwo" : "Ipsum"
}
foo is deserialized and Bah has a value of 0. I expected this to behave like the second example and to have foo set to null. I was hoping to understand what is going on in this case.
Note: This was recreated with the default empty web.api project and adding the above Controller.
c# json asp.net-web-api2
asked Nov 27 '18 at 0:02
Paul WildPaul Wild
16318
I am trying to understand a deserialization quirk around an invalid json request when trying to set a double with unquoted values. Given the example controller
public class TestController : ApiController
{
public IHttpActionResult Post([FromBody] Foo foo)
{
return Ok();
}
}
public class Foo
{
public string StringOne { get; set; }
public double Bah { get; set; }
public string StringTwo { get; set; }
}
The valid case with a JSON object such as:
{
"StringOne": "Lorem",
"Bah" : 1.2,
"StringTwo" : "Ipsum"
}
will build a foo object as you would expect, setting all three values correctly. The following invalid JSON will result in foo being set to null. Again this seems expected
{
"StringOne": "Lorem",
"Bah" : ThisIsntRight,
"StringTwo" : "Ipsum"
}
However when the following JSON is used
{
"StringOne": "Lorem",
"Bah" : Q,
"StringTwo" : "Ipsum"
}
foo is deserialized and Bah has a value of 0. I expected this to behave like the second example and to have foo set to null. I was hoping to understand what is going on in this case.
Note: This was recreated with the default empty web.api project and adding the above Controller.
c# json asp.net-web-api2
c# json asp.net-web-api2
asked Nov 27 '18 at 0:02
Paul WildPaul Wild
16318
asked Nov 27 '18 at 0:02
Paul WildPaul Wild
16318
asked Nov 27 '18 at 0:02
Paul WildPaul Wild
16318
asked Nov 27 '18 at 0:02
Paul WildPaul Wild
16318
asked Nov 27 '18 at 0:02
Paul WildPaul Wild
16318
16318
Have you trieddecimalinstead ofdouble?
– Hanjun Chen
Nov 27 '18 at 4:11
decimalhas the same behaviour
– Paul Wild
Nov 27 '18 at 9:11
What happens if you send two letters? could it be because it tries to parse it as a char?
– Pablo Ferro
Nov 27 '18 at 14:08
Two letters will return a null object. So some char related magic seems like a good bet
– Paul Wild
Nov 27 '18 at 20:34
add a comment |
Have you trieddecimalinstead ofdouble?
– Hanjun Chen
Nov 27 '18 at 4:11
decimalhas the same behaviour
– Paul Wild
Nov 27 '18 at 9:11
What happens if you send two letters? could it be because it tries to parse it as a char?
– Pablo Ferro
Nov 27 '18 at 14:08
Two letters will return a null object. So some char related magic seems like a good bet
– Paul Wild
Nov 27 '18 at 20:34
Have you tried
decimal instead of double?– Hanjun Chen
Nov 27 '18 at 4:11
Have you tried
decimal instead of double?– Hanjun Chen
Nov 27 '18 at 4:11
decimal has the same behaviour– Paul Wild
Nov 27 '18 at 9:11
decimal has the same behaviour– Paul Wild
Nov 27 '18 at 9:11
What happens if you send two letters? could it be because it tries to parse it as a char?
– Pablo Ferro
Nov 27 '18 at 14:08
What happens if you send two letters? could it be because it tries to parse it as a char?
– Pablo Ferro
Nov 27 '18 at 14:08
Two letters will return a null object. So some char related magic seems like a good bet
– Paul Wild
Nov 27 '18 at 20:34
Two letters will return a null object. So some char related magic seems like a good bet
– Paul Wild
Nov 27 '18 at 20:34
add a comment |
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Have you tried
decimalinstead ofdouble?– Hanjun Chen
Nov 27 '18 at 4:11
decimalhas the same behaviour– Paul Wild
Nov 27 '18 at 9:11
What happens if you send two letters? could it be because it tries to parse it as a char?
– Pablo Ferro
Nov 27 '18 at 14:08
Two letters will return a null object. So some char related magic seems like a good bet
– Paul Wild
Nov 27 '18 at 20:34