ASP.NET CORE Web API: Model value is null when doing HTTP Post requests with null Guid
I'm facing a problem doing post requests via ASP.NET Core Web API. I'm a bit confused of the articles I read/found while Googling.
So here's my scenario:
I'm trying to do a HTTP Post request to an api endpoint with a complex parameter.
[HttpPost]
[Route("api/createstudent")]
public async Task<ActionResult> CreateStudent([FromBody]Student student)
{
// Service logic
}
Model:
public class Student
{
public Guid StudentId { get; set; }
public string StudentName { get; set; }
}
My problem is that every time I make a post request to this endpoint the model value is null if I pass below the object.
{"studentId": null,"studentName": "Sam"}
Whereas If I pass empty Guid as below, I am able to get the model.
{ "studentId": "00000000-0000-0000-0000-000000000000", "studentName": "Sam" }
Is this a bug in ASP.NET Core 2? As I was able to pass null / Empty Guid for StudentId in .NET Framework WEB API.
c# asp.net asp.net-web-api asp.net-core-mvc asp.net-core-webapi
asked Nov 23 '18 at 5:29
Balanjaneyulu K
4541619
|
show 3 more comments
I'm facing a problem doing post requests via ASP.NET Core Web API. I'm a bit confused of the articles I read/found while Googling.
So here's my scenario:
I'm trying to do a HTTP Post request to an api endpoint with a complex parameter.
[HttpPost]
[Route("api/createstudent")]
public async Task<ActionResult> CreateStudent([FromBody]Student student)
{
// Service logic
}
Model:
public class Student
{
public Guid StudentId { get; set; }
public string StudentName { get; set; }
}
My problem is that every time I make a post request to this endpoint the model value is null if I pass below the object.
{"studentId": null,"studentName": "Sam"}
Whereas If I pass empty Guid as below, I am able to get the model.
{ "studentId": "00000000-0000-0000-0000-000000000000", "studentName": "Sam" }
Is this a bug in ASP.NET Core 2? As I was able to pass null / Empty Guid for StudentId in .NET Framework WEB API.
c# asp.net asp.net-web-api asp.net-core-mvc asp.net-core-webapi
asked Nov 23 '18 at 5:29
Balanjaneyulu K
4541619
1
You should make the property nullable if your want to allownull
– user3559349
Nov 23 '18 at 5:32
The same behavior is happening for DateTime parameter as well.
– Balanjaneyulu K
Nov 23 '18 at 5:32
1
make it as nullable field or have some default value for this field. public Guid? StudentId { get; set; }
– Keppy
Nov 23 '18 at 5:34
1
You also need to omit the value in the request - i.e. just{ "studentName": "Sam" }
– user3559349
Nov 23 '18 at 5:35
4
Guid is a value type, it does not allow null. You need to useGuid?.
– wannadream
Nov 23 '18 at 5:35
|
show 3 more comments
I'm facing a problem doing post requests via ASP.NET Core Web API. I'm a bit confused of the articles I read/found while Googling.
So here's my scenario:
I'm trying to do a HTTP Post request to an api endpoint with a complex parameter.
[HttpPost]
[Route("api/createstudent")]
public async Task<ActionResult> CreateStudent([FromBody]Student student)
{
// Service logic
}
Model:
public class Student
{
public Guid StudentId { get; set; }
public string StudentName { get; set; }
}
My problem is that every time I make a post request to this endpoint the model value is null if I pass below the object.
{"studentId": null,"studentName": "Sam"}
Whereas If I pass empty Guid as below, I am able to get the model.
{ "studentId": "00000000-0000-0000-0000-000000000000", "studentName": "Sam" }
Is this a bug in ASP.NET Core 2? As I was able to pass null / Empty Guid for StudentId in .NET Framework WEB API.
c# asp.net asp.net-web-api asp.net-core-mvc asp.net-core-webapi
asked Nov 23 '18 at 5:29
Balanjaneyulu K
4541619
I'm facing a problem doing post requests via ASP.NET Core Web API. I'm a bit confused of the articles I read/found while Googling.
So here's my scenario:
I'm trying to do a HTTP Post request to an api endpoint with a complex parameter.
[HttpPost]
[Route("api/createstudent")]
public async Task<ActionResult> CreateStudent([FromBody]Student student)
{
// Service logic
}
Model:
public class Student
{
public Guid StudentId { get; set; }
public string StudentName { get; set; }
}
My problem is that every time I make a post request to this endpoint the model value is null if I pass below the object.
{"studentId": null,"studentName": "Sam"}
Whereas If I pass empty Guid as below, I am able to get the model.
{ "studentId": "00000000-0000-0000-0000-000000000000", "studentName": "Sam" }
Is this a bug in ASP.NET Core 2? As I was able to pass null / Empty Guid for StudentId in .NET Framework WEB API.
c# asp.net asp.net-web-api asp.net-core-mvc asp.net-core-webapi
c# asp.net asp.net-web-api asp.net-core-mvc asp.net-core-webapi
asked Nov 23 '18 at 5:29
Balanjaneyulu K
4541619
asked Nov 23 '18 at 5:29
Balanjaneyulu K
4541619
edited Nov 23 '18 at 5:34
asked Nov 23 '18 at 5:29
Balanjaneyulu K
4541619
asked Nov 23 '18 at 5:29
Balanjaneyulu K
4541619
asked Nov 23 '18 at 5:29
Balanjaneyulu K
4541619
4541619
1
You should make the property nullable if your want to allownull
– user3559349
Nov 23 '18 at 5:32
The same behavior is happening for DateTime parameter as well.
– Balanjaneyulu K
Nov 23 '18 at 5:32
1
make it as nullable field or have some default value for this field. public Guid? StudentId { get; set; }
– Keppy
Nov 23 '18 at 5:34
1
You also need to omit the value in the request - i.e. just{ "studentName": "Sam" }
– user3559349
Nov 23 '18 at 5:35
4
Guid is a value type, it does not allow null. You need to useGuid?.
– wannadream
Nov 23 '18 at 5:35
|
show 3 more comments
1
You should make the property nullable if your want to allownull
– user3559349
Nov 23 '18 at 5:32
The same behavior is happening for DateTime parameter as well.
– Balanjaneyulu K
Nov 23 '18 at 5:32
1
make it as nullable field or have some default value for this field. public Guid? StudentId { get; set; }
– Keppy
Nov 23 '18 at 5:34
1
You also need to omit the value in the request - i.e. just{ "studentName": "Sam" }
– user3559349
Nov 23 '18 at 5:35
4
Guid is a value type, it does not allow null. You need to useGuid?.
– wannadream
Nov 23 '18 at 5:35
1
1
You should make the property nullable if your want to allow
null– user3559349
Nov 23 '18 at 5:32
You should make the property nullable if your want to allow
null– user3559349
Nov 23 '18 at 5:32
The same behavior is happening for DateTime parameter as well.
– Balanjaneyulu K
Nov 23 '18 at 5:32
The same behavior is happening for DateTime parameter as well.
– Balanjaneyulu K
Nov 23 '18 at 5:32
1
1
make it as nullable field or have some default value for this field. public Guid? StudentId { get; set; }
– Keppy
Nov 23 '18 at 5:34
make it as nullable field or have some default value for this field. public Guid? StudentId { get; set; }
– Keppy
Nov 23 '18 at 5:34
1
1
You also need to omit the value in the request - i.e. just
{ "studentName": "Sam" }– user3559349
Nov 23 '18 at 5:35
You also need to omit the value in the request - i.e. just
{ "studentName": "Sam" }– user3559349
Nov 23 '18 at 5:35
4
4
Guid is a value type, it does not allow null. You need to use
Guid?.– wannadream
Nov 23 '18 at 5:35
Guid is a value type, it does not allow null. You need to use
Guid?.– wannadream
Nov 23 '18 at 5:35
|
show 3 more comments
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1
You should make the property nullable if your want to allow
null– user3559349
Nov 23 '18 at 5:32
The same behavior is happening for DateTime parameter as well.
– Balanjaneyulu K
Nov 23 '18 at 5:32
1
make it as nullable field or have some default value for this field. public Guid? StudentId { get; set; }
– Keppy
Nov 23 '18 at 5:34
1
You also need to omit the value in the request - i.e. just
{ "studentName": "Sam" }– user3559349
Nov 23 '18 at 5:35
4
Guid is a value type, it does not allow null. You need to use
Guid?.– wannadream
Nov 23 '18 at 5:35