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Kevin_Williams · #1 (**permalink**) 02-06-2007

I was wondering if anyone know how to programmatically delete imported custom symbols.
TIA

**Wilfried** · #2 (**permalink**) 02-07-2007

Hi Kevin,

I mostly do all from within programming, then you have all in control of course. I never tryed it, but if you import with the MapPoint user interface it is probably the same. You can give (I think) each pushpin an exclusive name. Then you can find the pushpin with FindPushpin(name) and eventually delete it.

Of course if you do the import from within your application you can keep a linked list to all imported data.

Kevin_Williams · #3 (**permalink**) 02-07-2007

I think this might work, but I still need to code it and test it.

Adding the Symbol into MapPoint is done like this:

Code:

axMappointControl.ActiveMap.Symbols.Add(filePath)

I'm thinking the Symbol can be deleted by the following:

Code:

MapPoint.Symbol symbol = axMappointControl.ActiveMap.Symbols.ItemByID(symbolID);
symbol.Delete();

**Wilfried** · #4 (**permalink**) 02-08-2007

Hi Kevin,

Yes this will work. Sorry I did completely misundersteand your original question.

Kevin_Williams · #5 (**permalink**) 02-08-2007

i improved the code so it doesn't take as long to delete the imported symbols.

pretty much we use a collection to help manage the imported symbols.

when we add the symbol:

Code:

MapPoint.Symbol symbol = axMappointControl.ActiveMap.Symbols.Add(fileName);
symbol.Name = fileName;
arrayList.Add(fileName);

when we add the symbol, symbol name does not contain the extension.
so we would have to set the symbol name to file name.

when we delete:

Code:

object objSymbol = fileName;
MapPoint.Symbol symbol = axMappointControl.ActiveMap.Symbols.get_Item(ref objSymbol);
symbol.Delete();
arrayList.Remove(fileName);

note: the reason why i'm using symbol name instead of symbol ID is because the user will be able to add and delete the imported symbol on their own. so the symbol ID may be referring to another symbol.

**Wilfried** · #6 (**permalink**) 02-09-2007

Hi Kevin,

Thanks for feedback. Yes it is always a good idea to keep yourself a collection / array / linked list. And normally it is faster also.

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Posted By	For	Type	Date
Location Technology & Business Intelligence Executive Symposium - MP2K Magazine	This thread	Refback	02-14-2007 01:38 PM
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Programmatically delete Imported Custom Symbols

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