如何在 Excel 中使用 C# 更改数组内容的 Font.Bold？

Question

With Excel VBA I can write/set array of range for example Range("A1:B2, C2:D3").Font.Bold = True, so it will make A1, A2, B1, B2, C2, C3, D2 and D3 Font->Bold.

But then I try this with C# i get "Exception from HRESULT:0x800A03EC", and I can't figure why?

I know range has some limits but considering speed and other stuff its best way to set Font.Bold as range at once rather make separate calls on each cell.

Hope someone can help me :)

Answer 1

A range can be part of Range() parameters. Please give a try to below style -

Excel.Range range1 = _with.Range("A1:B2");
Excel.Range range2 = _with.Range("C2:D3");

_with.Range(range1,range2).Font.Bold = true;

Answer 2

Some speculation here, short of seeing your actual C#, but I believe this code will work:

Excel.Worksheet sheet;
sheet.Range["A1:B2,C2:D3"].Font.Bold = true;

So my only guess is that you used parentheses () instead of brackets [].

In VBA, function parameters and indexers both use parentheses. In C#, function parameters use parentheses, but to invoke an indexer you need to use the square brackets.

Does the code above give the same error?