StrataFrame Forum » StrataFrame Application Framework - V1 » Business Objects and Data Access (How do I?) » What is this error?

What is this error?

Daniel Essin — Thu, 11 May 2006 08:47:52 GMT

In this code tha references a bo:
PatientSelectedEventArgs pa = new PatientSelectedEventArgs(boPatientSearch1.MRN, boPatientSearch1.LASTNAME, boPatientSearch1.FIRSTNAME, boPatientSearch1.BIRTHDATE, boPatientSearch1.GENDER, boPatientSearch1.SSN);

with this set of event args:
public class PatientSelectedEventArgs : EventArgs
{
public PatientSelectedEventArgs(string MRN, string LastName, string FirstName, DateTime Birthdate, string Gender, string SSN)
{
this.MRN = MRN;
this.LastName = LastName;
this.FirstName = FirstName;
this.SSN = SSN;
this.Gender = Gender;
this.Birthdate = Birthdate;
this.IDSTRING = "MRN: " + MRN + ", Name: " + LastName + ", " + FirstName + ", Gender: " + Gender + ", Birthdate: " + Birthdate.ToShortDateString();
}
public string MRN;
public string IDSTRING;
public string LastName;
public string FirstName;
public string Gender;
public string SSN;
public DateTime Birthdate;
}

what is this?
Argument '4': cannot convert from 'System.DateTime?' to 'System.DateTime'

RE: What is this error?

StrataFrame Team — Thu, 11 May 2006 08:47:52 GMT

That's very odd... I've never heard of .NET not being able to cast an object to its own type.

RE: What is this error?

Daniel Essin — Wed, 10 May 2006 16:38:55 GMT

I think that I tried that and got the same message. The only thing that worked was
DateTime.Parse(bo.NullableGenericDate.Value.ToShortDateString()).

RE: What is this error?

StrataFrame Team — Wed, 10 May 2006 11:10:10 GMT

When you pass a nullable generic from a property, you will need to pass the propertie's .Value member. Like this:

new PatientSelectedEventArgs(boPatientSearch1.MRN, boPatientSearch1.LASTNAME, boPatientSearch1.FIRSTNAME, boPatientSearch1.BIRTHDATE.Value, boPatientSearch1.GENDER, boPatientSearch1.SSN);

Otherwise, you're passing a NullableGeneric value into an actual value.

RE: What is this error?

Daniel Essin — Wed, 10 May 2006 10:57:16 GMT

yes, nullable generic

RE: What is this error?

StrataFrame Team — Wed, 10 May 2006 08:40:01 GMT

Are you returning a nullable generic value for the DateTime? If not, what is the value of the variable you're trying to pass?