Odtnhj

ok I am getting this error:
System.Web.Services.Protocols.SoapExcel
Object cannot be cast from DBNULL to other types.

here is the line:
/// CodeRemarks

[System.Web.Services.Protocols.SoapDocumentMethodAttribute
("http://tempuri.org/IService1/school_picker", 
RequestNamespace="http://tempuri.org/", 
ResponseNamespace="http://tempuri.org/", 
Use=System.Web.Services.Description.SoapBindingUse.Literal, 
ParameterStyle=System.Web.Services.Protocols.
SoapParameterStyle.Wrapped)]
[return: System.Xml.Serialization.XmlArrayAttribute(IsNullable=true)]
[return: 
System.Xml.Serialization.XmlArrayItemAttribute
(Namespace="http://schemas.datacontract.org/2004/07/Bailey_Service")]
public Schedule school_picker(int i) 
object results = this.Invoke("school_picker", new object 
 i
 );
return ((Schedule)(results[0]));
 

the really weird thing, is that this work like 6 times out 8.
why does it not work all of the time
what is this error even saying ?

also I check and
this code :

public override void PrepareForSegue(UIStoryboardSegue segue, NSObject sender)

 if (segue.Identifier == "taskcell")
 // set in Storyboard
 Service1 client = new Service1();

 var source = TableView.Source as ScheduleTableViewSource;
 int rool = TableView.IndexPathForSelectedRow.Row;
 schools = 
 client.school_picker(TableView.IndexPathForSelectedRow.Row);


 var navctlr = segue.DestinationViewController as NextMatchView;
 if (navctlr != null)
 
 navctlr.SetTask(schools); // to be defined on the TaskDetailViewController
 
 

it dies at schools = client.school_picker(TableView.IndexPathForSelectedRow.Row); line
and Row is never null...
I put a break point before had it is was not NULL

I am using WCF and coding in C# in Visual studio Community 2017 for Mac
Also, I have used another app to connect to this same service and I do not have this problem.
so have has to be something with this app.