vba - Pass Range in Function, Sum Adjacent Cells, and Return Sum -

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i have following excel table:

sample image

i want pass first column string, determine address of cells called 'lna' , 'lcamp', , sum adjacent cells 'between' 2 addresses. failed code:

function lnatolcamp(componentlist) single  dim integer dim lboundaddress variant, uboundaddress variant  = lbound(componentlist) ubound(componentlist)     if componentlist(i, 1).value = "lna"         lboundaddress = componentlist(i, 1).address.offset(0, 1)     end if     if componentlist(i, 1).value = "lcamp"         uboundaddress = componentlist(i, 1).address.offset(0, 1)     end if next  lnatolcamp = application.worksheetfunction.sum(lboundaddress, ":", uboundaddress)  end function

maybe there's better way?

try this:

function lnatolcamp() single    dim lna range, lcamp range     sheets("sheet1")        set lna = .range("b:b").find("lna").offset(0, 1)        set lcamp = .range("b:b").find("lcamp").offset(0, 1)        if not lna nothing , not lcamp nothing _            lnatolcamp = evaluate("sum(" & .range(lna, lcamp).address & ")")    end end function

edit2: dynamic needs.

function consum(rng range, str1 string, str2 string, _         optional idx long = 1) variant     application.volatile '<~~ autoupdate on cell change, remove otherwise     dim r1 range, r2 range     set r1 = rng.find(str1, rng(1), , xlwhole)     set r2 = rng.find(str2, rng(1), , xlwhole, , xlprevious)     if not r1 nothing , not r2 nothing _         consum = application.sum(rng.parent.range(r1.offset(0, idx), _         r2.offset(0, idx))) else consum = cverr(xlerrvalue) end function

in second function, can select range search , specify string want search.
returns #value! error if strings specify not found. hth.

for edit2 offset dynamic (default @ 1). sum first instance of 1st string last instance of second raised chrisneilsen.

result:

enter image description here


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