[Mono-osx] NSTableView in monomac

[gareth.baker at stfc.ac.uk]

Hi,

 

I'm trying to use an NSTableView from monomac. I can get the code to
compile with the two delegate functions:

 

         [Export("numberOfRowsInTableView:")]

          public int GetRowCount(NSTableView aTableView)

          {

            return records.Count;// records is an ArrayList

      }

        

            [Export("tableView:objectValueForTableColumn:row:")]

      public NSObject GetObjectValue(NSTableView aTableView,
NSTableColumn aTableColumn, int rowIndex)

      {

            string identifier = aTableColumn.Identifier.ToString();

            Object theRecord, theValue;

            

                  theRecord = records[rowIndex];

                  theValue = ((Hashtable)theRecord)[identifier];

 

            return (NSObject)theValue;// this cast is not working

      }

 

Running the program crashes when I try to add data to the TableView.
Using the debugger seems to indicate that all is well up to the 'return'
in GetObjectValue when the cast fails with "Unhandled Exception:
System.InvalidCastException: Cannot cast from source to destination
type". Is this the correct way to do this cast?

 

Thanks

Gareth Baker

 


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