copying of specific range of excel cells from one worksheet to another worksheet

Question

I am writing a C# program which copies a range of cells from a worksheet of one workbook to a worksheet of an other workbook. But the problem I am facing is I am only able t

Answer 1

For the First part of setting the same value for the entire range, instead of looping following will work out

range1 = workSheet.get_Range("A1:B100"); range1.Value = "Fixed";

And for copying you can try what @mrtig has suggested.