How to Freeze Top Row and Apply Filter in Excel Automation with C#

Question

I have automation to create an Excel document from C#. I am trying to freeze the top row of my worksheet and apply filter. This is the same as in Excel 2010 if you select View > Freeze Panes > Freeze top row, and then after selecting top row Data > Filter. I do not have any idea how to apply the filter but the following is what I tried for freezing the top row and it just froze the entire worksheet. Does anyone have a solution to my problem. The data filter problem is where I need more help so if anyone has a solution to that please enlighten me.

Many thanks, KBP

        workSheet.Activate();
        Excel.Range firstRow = (Excel.Range)workSheet.Rows[1];
        firstRow.Activate();
        firstRow.Select();
        firstRow.Application.ActiveWindow.FreezePanes = true;

Answer 1

I figured it out!

@Jaime's solution to freezing the top row worked perfectly. And the following is my solution to applying the filter:

Thanks, KBP

// Fix first row
workSheet.Activate();
workSheet.Application.ActiveWindow.SplitRow = 1;
workSheet.Application.ActiveWindow.FreezePanes = true;
// Now apply autofilter
Excel.Range firstRow = (Excel.Range)workSheet.Rows[1];
firstRow.AutoFilter(1, 
                    Type.Missing, 
                    Excel.XlAutoFilterOperator.xlAnd, 
                    Type.Missing, 
                    true);

Answer 2

Try this...

workSheet.Activate();
workSheet.Application.ActiveWindow.SplitRow = 1;
workSheet.Application.ActiveWindow.FreezePanes = true;

Answer 3

workSheet.EnableAutoFilter = true; 
workSheet.Cells.AutoFilter(1); 

//Set the header-row bold
workSheet.Range["A1", "A1"].EntireRow.Font.Bold = true;  

//Adjust all columns
workSheet.Columns.AutoFit(); 

There could be some System.Reflection.Missing.Value that need to be passed with the arguments, but this was VB.Net code I've converted out of my mind.

Answer 4

//path were excel file is kept string ResultsFilePath = @"C:\Users\krakhil\Desktop\FolderName\FileNameWithoutExtension";

        Excel.Application ExcelApp = new Excel.Application();
        Excel.Workbook ExcelWorkbook = ExcelApp.Workbooks.Open(ResultsFilePath);
        ExcelApp.Visible = true;

        //Looping through all available sheets
        foreach (Excel.Worksheet ExcelWorksheet in ExcelWorkbook.Sheets)
        {                
            //Selecting the worksheet where we want to perform action
            ExcelWorksheet.Select(Type.Missing);

            //Making sure first row is selected - else split and freeze will happen
            //On the visible part and not from the top
            Excel.Range activeCell = ExcelWorksheet.Cells[1, 1];
            activeCell.Select();

            //Applying auto filter to Row 10
            activeCell = (Excel.Range)ExcelWorksheet.Rows[10];
            activeCell.AutoFilter(1,
                Type.Missing,
                Excel.XlAutoFilterOperator.xlAnd,
                Type.Missing,
                true);

            //Split the pane and freeze it
            ExcelWorksheet.Application.ActiveWindow.SplitRow = 10;
            ExcelWorksheet.Application.ActiveWindow.FreezePanes = true;

            //Auto fit all columns
            ExcelWorksheet.Columns.AutoFit();

            //Releasing range object
            Marshal.FinalReleaseComObject(activeCell);
        }

        //saving excel file using Interop
        ExcelWorkbook.Save();

        //closing file and releasing resources
        ExcelWorkbook.Close(Type.Missing, Type.Missing, Type.Missing);
        Marshal.FinalReleaseComObject(ExcelWorkbook);
        ExcelApp.Quit();
        Marshal.FinalReleaseComObject(ExcelApp);

Answer 5

The below solutions are working fine, but it is freezing the first row of the current visible snapshot of the sheet. For ex: If your current sheet visible snapshot is from row 43 to some number say 90.. then freeze row is getting applied to 43.

If you want only the very first row of sheet (heading row) to be frozen, no matter the excel scroll position, then the below solution worked for me. This code scrolls up the excel sheet to row 1. You have to store the position if you want to go back to the previous position before freeze.

worksheet.Application.ActiveWindow.ScrollRow = 1;
worksheet.Application.ActiveWindow.SplitRow = 1;
worksheet.Application.ActiveWindow.FreezePanes = true;