WCF Method that takes an object as its parameter

David Chen

13y2.3k

I'm still quite new the WCF Services

School assignments that I done on WCF were writing simple methods of WCF service which accepts strings or int or bool values.

However, I came across this wcf service that wasn't done by myself, and now I am required to write C# client to consume this service.

This WCF has a GetFees method which takes a Student Object as parameter (from WCF's Student DataContract)

My assignment is to Get Fees of particular students. The information i'm given are

StudentID=1, FirstName=Fernando, LastName=Gadd, Grade=4

StudentID=3, FirstName=Allan, LastName=Pascoe, Grade=1

Currently stuck on how to approach this question, but i'm thinking something like

Fee[] newFee1 = client.GetFees(new Student("1", "Fernando", "Gadd", "4".......

Fee[] newFee2 = client.GetFees(new Student("3", "Allan", "Pascoe", "1".......

Thank you whoever can help

4 Replies

Know the answer? Post it — somebody with the same question will find it here.

Vishal Gilbile13y ago
Accepted answer
Hi David,
The error is clearing stating you that your GetFees function accepts a Student Array and not a single object in Such case what you can do is

Declare an Student array

Student[] objStudents=new Student[3];
objStudents[0]=new Student()
{
// Specify the following student details;
};
objStudents[1]=new Student();
{
// Specify the following student details;
}
objStudents[2]=new Student();
{
// Specify the following student details;
}

And Now call your GetFees function;

Fees []fees=client.GetFees(objStudents);

Hope that solves your problem. If it helps your kindly mark the answer as accepted.

With Regards,
Vishal Gilbile.
David Chen13y ago
Another question how do I sort that array of objects Fee[] in Student[] by the property DueDate

I was thinking something like

foreach (Student stud in objStudentWithFeeData)
{
foreach (Fee objFee in stud.Fees)
{
objFee.DueDate.Sort(.......
}
}

for array of object mapping image
http://i.stack.imgur.com/CAvxs.jpg
David Chen13y ago
Hi Vishal Thanks for your time and your help. I just tried your way and got 2 errors ServiceReference.ServiceClient.GetFees(ServiceReference.Student[]) has invalid arguements and Argument 1 cannot convert from ServiceReference.Student to ServiceReference.Student[]
Vishal Gilbile13y ago
Hi Friend,
What ever your query is its quite simple, what you performed is absolutely fine. Well I prefer the following way of doing the same because it looks quite clear.

Assuming that Student 1 Data Needs to be passed.

Student objStudent=new Student()
{
StudentId=1,
FirstName="Fernando",
LastName="Gadd",
Grade=4
};

Fee[] objFees=client.GetFees(objStudent);

Hope that works fine.

With Regards,
Vishal Gilbile.