c# - Cannot create default converter when dll is in a different folder -


i created typeconverter in assembly a.dll. wpf app. works fine when a.dll file in same folder app.

when a.dll file in folder (a sub folder), got following error:

system.windows.data error: 1 : cannot create default converter perform 'two-way' conversions between types 'system.nullable`1[ekey]' , 'ekeyid'. consider using converter property of binding. bindingexpression:path=clientkey; dataitem='mitem' (hashcode=25260709); target element 'selector' (name='this'); target property 'selectedkey' (type 'keyid')

i don't understand problem ? have lot of other dll files in sub folder loaded correctly. in advance help.


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