selectionfilter select object by layer, layer name contains #, selectionresult got error

[Anonymous]

use the following code to select objects on layer, layername contains #, selectionresult ERROR

TypedValue[] tvs = new TypedValue[]
{
new TypedValue((int)DxfCode.Operator, "<and"),
new TypedValue((int)DxfCode.LayerName,  layerName  ),
 
new TypedValue((int)DxfCode.Operator, "and>")
};
SelectionFilter filter = new SelectionFilter(tvs);
ObjectId[] objIds;
PromptSelectionResult psr = doc.Editor.SelectAll(filter);

please anyone can help

Thank you

[_gile · Accepted solution]

Hi,

Selection filters use wildcard patterns and # is wildcard charater.

You have to prefix the # with a reverse quote (`#) in the filter pattern.

layerName.Replace("#", "`#")

PS : using special characters in layer names, block names, ... is not a good practice.

[Anonymous]

THANK YOU VERY MUCH Gilles, you made my day, very much appreciate