COM Exception (code 0x800A03EC) thrown when programmatically changing page breaks in VB.Net -

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i attempting use vb.net excel com interop programmatically change location of first horizontal page break on excel spreadsheet being generated program. code follows:

    dim range excel.range     xlactualws.activate()     xlactualws.pagesetup.printarea = "$a$1:$k$68"     range = xlactualws.range("a68", "a68")     xlactualws.hpagebreaks(1).location = range     system.runtime.interopservices.marshal.releasecomobject(range)

on line setting hpagebreaks, com exception code 0x800a03ec thrown, , can't find thing related searching. have idea i'm missing here?

based onthe code looks either location of page break cannot set or there 0 page breaks , hence you're accessing invalid index. quick way test out following

  • check count property on xlactualws.hpagebreaks , see how many available
  • remove set of location property , see if error dissapears

additionally should remove releasecomobject call. that's difficult api correct , clr quite @ cleaning com object references on it's own.


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