通过C＃使用LINEST创建Excel工作表

Question

I have a C# application which has to create an Excel file with formulas. Simple formulas work fine. But when I use LINEST(...) I get an exception.

Init objects:

using Microsoft.Office.Interop.Excel;

var Application xlApp = new Microsoft.Office.Interop.Excel.Application();
Workbook xlWorkBook = xlApp.Workbooks.Add(misValue);
var currentWorksheet = xlWorkBook.Worksheets.get_Item(1);

string myLinestFormulaString ="LINEST(LN(C1:C10);$A1:$A10;TRUE;FALSE)";

The line below causes an exception HRESULT: 0x800A03EC

currentWorksheet.Cells[12, 3].Formula = myLinestFormulaString; // Write to C12

I know the HRESULT means that there is something wrong with the formula string.

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Edit: Issue solved. I use the German version of Excel. In C# I had to replace ';' with commas.

Answer 1

Excel's COM interface use the American list separators. That's why you need , instead of ; in your formular.

Try:

string myLinestFormulaString = "LINEST(LN(C1:C10),$A1:$A10,TRUE,FALSE)";