c# - Worksheet get_Range throws exception -


i'm using c# manipulate excel worksheet. following 2 pieces of code should work same, 1 works , other throws exception. wonder why.

this works:

orange = (excel.range)osheet.get_range("a1","f1"); orange.entirecolumn.autofit();

this throws exception:

orange = (excel.range)osheet.get_range(osheet.cells[1, 1],osheet.cells[4,4]); orange.entirecolumn.autofit();

exception:

runtimebinderexception occurred. "object" not contain definition 'get_range'

the osheet instantiated follows:

excel.worksheet osheet = new excel.worksheet();

am supposed instantiate both differently?

it looks exception thrown osheet.cells[1, 1] , osheet.cells[4, 4] used arguments get_range.

by doing following, there no exception:

excel.range c1 = osheet.cells[1, 1]; excel.range c2 = osheet.cells[4, 4]; orange = (excel.range)osheet.get_range(c1, c2); orange.entirecolumn.autofit();

so might related osheet.get_range functionality. receives object argument, therefore might try invoke get_range method on arguments receive internal cell, , up-cast range object done compiler might hide method call.

if need cells definition row/column - try using above approach


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