Question

I am having an issue where I am attempting to pass a non-primitive (and user defined) data type into a WebMethod. Is there a certain way to do this? Here is an example of my code:

[WebMethod]
public bool GetTableRecordCnt(int i, String str, DateTime? lastUpdatedDate, UserDefinedType udt, out FDT_SCHEDULER_STATUS[] schedulerTable)
{
    //code
}

When I try to call this function from my client application I get the following error:

“Unable to read data from the transport connection.”

If I replace the UserDefineType parameter with a primitive data type (an int for example) the client is able to get a response from the WebMethod.

Thanks in advance for you help.

EDIT:

Calling code from client application:

UserDefinedType udt = new UserDefinedType();
UserDefinedType1[] tableRecords = ThisApplication.FillArray();

bool result = WebServiceReferenceName.GetTableRecordCnt(1, "tableName", "10/10/2010 12:00:00", udt, out tableRecords);

That is a gross oversimplification of the parameters that are being passed to the web method, but the data that is in each parameter is what would be passed.

Answer 1

OK, so finding out what the problem is has finally given me some relief =)

Apparently there is a limit to the number of characters that a variable can be named when you pass a UserDefinedType to a web method. After testing with each piece that I added for this new function in my code. I found that shortening the following variable name:

SchedulerRecordCount

to:

SchedRecCnt

is now allowing data to be passed between my windows mobile application and the c# web service. GO FIGURE!

Now, does anyone know if there is a specific numeric limit to the number of characters that can be used to name a variable in a UserDefinedType that will be passed to a Web Method, or could this be an environment issue on my end?