Question

I am trying to do the following using c# code:

1. Hide some rows in excel.
2. Clear all data and formats in excel sheet.
3. Put other data to excel sheet.

I would like the hidden rows still remain hidden.
Is it possible?

Thank You!

Answer 1

Here’s a sample code that can get you going….

        //Create an Excel App
        Microsoft.Office.Interop.Excel.Application xlApp = new Microsoft.Office.Interop.Excel.Application();

        Microsoft.Office.Interop.Excel._Workbook xlWorkBook = null;
        Microsoft.Office.Interop.Excel._Worksheet xlWorksheet;

        //Open a Workbook
        xlWorkBook = xlApp.Workbooks.Open(@"d:\test.xlsx");
        xlWorksheet = (Microsoft.Office.Interop.Excel.Worksheet)xlWorkBook.Sheets[1];

        //My Workbook contains 10 rows with some data and formatting
        //I Hide rows 3, 4 & 5
        Microsoft.Office.Interop.Excel.Range hiddenRange = xlWorksheet.get_Range("A3:C5");
        hiddenRange.EntireRow.Hidden = true;

        //Get the entire sheet and Clear everything on it including data & formatting
        Microsoft.Office.Interop.Excel.Range allRange = xlWorksheet.UsedRange;
        allRange.Clear();


        //Now Add some new data, say a Title on the first cell, and some more data in a loop later
        xlWorksheet.Cells[1, 1] = "Title";

        for (int i = 6; i < 10; i++)
        {
            xlWorksheet.Cells[i, 1] = i.ToString();
        }

        xlApp.Visible = true;

Thats it….