asp.net - List.Find throwing Nullable object must have a value error -

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dim sipff systeminfopropertiesforform = listsysteminfopropertiesforform.find(function(f) f.showfieldpropertytypeid = cint(systeminfopropertyids.showmilestone))

systeminfopropertiesforform complex type items nullable.

cint(systeminfopropertyids.showmilestone) = 900

listsysteminfopropertiesforform has 10 items

any idea ?

fixed using below code

dim sipff systeminfopropertiesforform = listsysteminfopropertiesforform.find(function(f) f.showfieldpropertytypeid.hasvalue andalso f.showfieldpropertytypeid.value = cint(systeminfopropertyids.showmilestone))

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