In my store procedure I need to pass some ObjectParameter. (Basically they work as out put parameters). But when I try ti execute my code it show error.
System.InvalidOperationException: The parameter at index 3 in the parameters array is null.
Below is my controller code where I am executing the store procedure.
CPMVCEntities db = new CPMVCEntities(); int? result = db.AdminAuthenticate_USP(login.pvcUsername, login.pvcPassword,"",null,null,null,null,null,null,null).FirstOrDefault();
and below is the context.cs file code which EF creates automatically.
public virtual ObjectResult<Nullable<int>> AdminAuthenticate_USP(string pvcUsername, string pvcPassword, string pvcIpAddress, ObjectParameter pbintId, ObjectParameter pchAdminType, ObjectParameter pvcFirstName, ObjectParameter pvcLastName, ObjectParameter pvcEmail, ObjectParameter pbtStatus, ObjectParameter dtimeLastLogin)
{
var pvcUsernameParameter = pvcUsername != null ?
new ObjectParameter("pvcUsername", pvcUsername) :
new ObjectParameter("pvcUsername", typeof(string));
var pvcPasswordParameter = pvcPassword != null ?
new ObjectParameter("pvcPassword", pvcPassword) :
new ObjectParameter("pvcPassword", typeof(string));
var pvcIpAddressParameter = pvcIpAddress != null ?
new ObjectParameter("pvcIpAddress", pvcIpAddress) :
new ObjectParameter("pvcIpAddress", typeof(string));
return ((IObjectContextAdapter)this).ObjectContext.ExecuteFunction<Nullable<int>>("AdminAuthenticate_USP", pvcUsernameParameter, pvcPasswordParameter, pvcIpAddressParameter, pbintId, pchAdminType, pvcFirstName, pvcLastName, pvcEmail, pbtStatus, dtimeLastLogin);
}
The parameter at index 3 in the parameters array is null.
According to your description, the exception shows the parameter value is null and I think it represents that parameter value for pbintId is null. So there may be losing some settings in your store procedure.
So, I hope you could share your table construction and store procedure in your database.It will help us to reproduce your problem.
You can use optional parameters on a method signature. But on the other hand, you can't pass in a null value for a parameter object, becuase all that is going to do is blow up the program at the code that addresses any parameter object that is a null
valued object, which you have nulled-out most of the parameters you are passing into the method, and then you are trying to address the null valued parameters in the code.
Participant
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System.InvalidOperationException: The parameter at index 'n' in the parameters array is null
Apr 23, 2019 04:55 AM|demoninside9|LINK
Hi All,
I just started using EF 6.0.
In my store procedure I need to pass some ObjectParameter. (Basically they work as out put parameters). But when I try ti execute my code it show error.
System.InvalidOperationException: The parameter at index 3 in the parameters array is null.
Below is my controller code where I am executing the store procedure.
and below is the context.cs file code which EF creates automatically.
public virtual ObjectResult<Nullable<int>> AdminAuthenticate_USP(string pvcUsername, string pvcPassword, string pvcIpAddress, ObjectParameter pbintId, ObjectParameter pchAdminType, ObjectParameter pvcFirstName, ObjectParameter pvcLastName, ObjectParameter pvcEmail, ObjectParameter pbtStatus, ObjectParameter dtimeLastLogin) { var pvcUsernameParameter = pvcUsername != null ? new ObjectParameter("pvcUsername", pvcUsername) : new ObjectParameter("pvcUsername", typeof(string)); var pvcPasswordParameter = pvcPassword != null ? new ObjectParameter("pvcPassword", pvcPassword) : new ObjectParameter("pvcPassword", typeof(string)); var pvcIpAddressParameter = pvcIpAddress != null ? new ObjectParameter("pvcIpAddress", pvcIpAddress) : new ObjectParameter("pvcIpAddress", typeof(string)); return ((IObjectContextAdapter)this).ObjectContext.ExecuteFunction<Nullable<int>>("AdminAuthenticate_USP", pvcUsernameParameter, pvcPasswordParameter, pvcIpAddressParameter, pbintId, pchAdminType, pvcFirstName, pvcLastName, pvcEmail, pbtStatus, dtimeLastLogin); }On this line (bold one) a get the error
return ((IObjectContextAdapter)this).ObjectContext.ExecuteFunction<Nullable<int>>("AdminAuthenticate_USP", pvcUsernameParameter, pvcPasswordParameter, pvcIpAddressParameter, pbintId, pchAdminType, pvcFirstName, pvcLastName, pvcEmail, pbtStatus, dtimeLastLogin);
Please suggest.
Participant
1250 Points
522 Posts
Re: System.InvalidOperationException: The parameter at index 'n' in the parameters array is null
Apr 23, 2019 08:30 AM|Wei Zhang|LINK
Hi demoninside9,
According to your description, the exception shows the parameter value is null and I think it represents that parameter value for pbintId is null. So there may be losing some settings in your store procedure.
So, I hope you could share your table construction and store procedure in your database.It will help us to reproduce your problem.
Best Regards
Wei
Contributor
3761 Points
3185 Posts
Re: System.InvalidOperationException: The parameter at index 'n' in the parameters array is null
Apr 23, 2019 08:34 AM|DA924|LINK
You can use optional parameters on a method signature. But on the other hand, you can't pass in a null value for a parameter object, becuase all that is going to do is blow up the program at the code that addresses any parameter object that is a null valued object, which you have nulled-out most of the parameters you are passing into the method, and then you are trying to address the null valued parameters in the code.
https://www.c-sharpcorner.com/UploadFile/manas1/named-and-optional-parameter-in-C-Sharp/