PhysiologyWeb Logo  Search
PhysiologyWeb Loading...

Delphi Code - Add Header and Footer to an Excel Worksheet
Here is a simple Delphi procedure that opens an existing Microsoft Excel file and adds header and footer text to the first worksheet (i.e., first tab). The file is then saved using the same name (overwrites the original file). The most relevant parts of the code are highlighted. Comments are included to explain the code. If you copy and paste the code into your program, be sure to change the form and procedure names to match your setup. For additional Excel automation solutions, see Microsoft Excel Automation with Delphi.
procedure TForm1.AddHeaderAndFooterToAnExcelWorksheet(Sender: TObject);
var
ExcelFileName: String;
ExcelApplication, ExcelWorkbook, ExcelWorksheet: Variant;
begin
//be sure ComObj and Variants units are included in the "uses" clause

ExcelFileName := 'C:\PhysiologyWeb\delphi_code_examples\excel_file.xlsx'; //replace file name with the name of your file

ExcelApplication := Null;
ExcelWorkbook := Null;
ExcelWorksheet := Null;

try
//create Excel OLE
ExcelApplication := CreateOleObject('Excel.Application');
except
ExcelApplication := Null;
//add error/exception handling code as desired
end;

If VarIsNull(ExcelApplication) = False then
begin
try
ExcelApplication.Visible := True; //set to False if you do not want to see the activity in the background
ExcelApplication.DisplayAlerts := False; //ensures message dialogs do not interrupt the flow of your automation process. May be helpful to set to True during testing and debugging.

//Open Excel Workbook
try
ExcelWorkbook := ExcelApplication.Workbooks.Open(ExcelFileName);
//reference
//https://docs.microsoft.com/en-us/office/vba/api/excel.workbooks.open
except
ExcelWorkbook := Null;
//add error/exception handling code as desired
end;

If VarIsNull(ExcelWorkbook) = False then
begin
//connect to Excel Worksheet using either the ExcelApplication or ExcelWorkbook handle
try
ExcelWorksheet := ExcelWorkbook.WorkSheets[1]; //[1] specifies the first worksheet
except
ExcelWorksheet := Null;
//add error/exception handling code as desired
end;

If VarIsNull(ExcelWorksheet) = False then
begin
ExcelWorksheet.Select;

ExcelWorksheet.PageSetup.LeftHeader := 'Text for Left Header';
ExcelWorksheet.PageSetup.CenterHeader := 'Text for Center Header';
ExcelWorksheet.PageSetup.RightHeader := 'Text for Right Header';

ExcelWorksheet.PageSetup.LeftFooter := 'Text for Left Footer';
ExcelWorksheet.PageSetup.CenterFooter := 'Text for Center Footer';
ExcelWorksheet.PageSetup.RightFooter := 'Text for Right Footer';

//references
//https://docs.microsoft.com/en-us/office/vba/api/excel.pagesetup.leftheader
//https://docs.microsoft.com/en-us/office/vba/api/excel.pagesetup.centerheader
//https://docs.microsoft.com/en-us/office/vba/api/excel.pagesetup.rightheader
//https://docs.microsoft.com/en-us/office/vba/api/excel.pagesetup.leftfooter
//https://docs.microsoft.com/en-us/office/vba/api/excel.pagesetup.centerfooter
//https://docs.microsoft.com/en-us/office/vba/api/excel.pagesetup.rightfooter

ExcelWorksheet.Cells[1,1] := 'We just added header and footer text!'; //[row,column], in this case, text is added to Cell A1
ExcelWorksheet.Cells[2,1].Select; //selects Cell A2

ExcelWorkbook.Save;
end;
end;
finally
ExcelApplication.Workbooks.Close;
ExcelApplication.DisplayAlerts := True;
ExcelApplication.Quit;

ExcelWorksheet := Unassigned;
ExcelWorkbook := Unassigned;
ExcelApplication := Unassigned;
end;
end;
end;






Posted: Friday, April 29, 2022