Question

delphi中从DBGrid导出到excel功能的代码 谢谢

Answer 1

方法：
procedure DBGridInFoToExcel(FileName, TitleCaption: string;
MakeDataSource: TDataSource; makeDBGrid: TDBGrid);
var
xlApp, xlSheet, szValue: Variant;
ARow, iLoop: word;
begin
xlApp := CreateOleObject('Excel.Application');
try
xlSheet := CreateOleObject('Excel.Sheet');
xlSheet := xlApp.WorkBooks.Add;
// 表格标题
for iLoop := 0 to makeDBGrid.Columns.Count - 1 do
xlSheet.WorkSheets[1].Cells[1, iLoop + 1] := makeDBGrid.Columns[iLoop].Title.Caption;
// 数据
ARow := 2;
with MakeDataSource.DataSet do
begin
DisableControls;
First;
while not Eof do
begin
for iLoop := 0 to Fields.Count - 1 do
begin
szValue := Fields[iLoop].Value;
xlSheet.WorkSheets[1].Cells[ARow, iLoop + 1] := szValue;
end;
inc(ARow);
Next;
end;
First;
EnableControls;
end;
try
xlSheet.SaveAs(FileName);
Application.MessageBox('导出完毕!', '提示', MB_IconExclamation);
finally
xlSheet.Close;
xlApp.Quit;
xlApp := UnAssigned;
end;
except
Application.MessageBox('本机没有安装Excel.', '错误', MB_OK);
end;
end;

//调用：
//参数1：导出Excel的文件名称
//参数2：Excel的第一行标题(本例代码中去掉了这个功能，所以传空）
//参数3：与DBGrid连接的DataSouce
//参数4：要导出的DBGrid
DBGridInFoToExcel(AFileName, '', ADataSource, DBGrid1);

Answer 2

unit U_func;

interface
uses forms,SysUtils,ComCtrls,DBGrids,DB,Dialogs,Messages,Windows,ComObj,Controls,ADODB,StdCtrls,Graphics;

function ProgressBarform(max:integer):tProgressBar;
function ExportToExcel(dbgrid:tdbgrid):boolean;
function queryExportToExcel(queryexport:tadoquery):boolean;

implementation

//生成一个显示进度条的窗体
function ProgressBarform(max:integer):tProgressBar;
var
ProgressBar1:TProgressBar;
form:tform;
begin
application.CreateForm(tform,form);
form.Position:=poScreenCenter;
form.BorderStyle:=bsnone;
form.Height:=30;
form.Width:=260;
ProgressBar1:=TProgressBar.Create(form);
ProgressBar1.Visible:=true;
ProgressBar1.Smooth:=true;
ProgressBar1.Max:=max;
ProgressBar1.ParentWindow:=form.Handle;
ProgressBar1.Height:=20;
ProgressBar1.Width:=250;
ProgressBar1.Left:=form.Left+5;
ProgressBar1.Top:=form.Top+5;
ProgressBar1.Step:=1;
form.show;
result:=ProgressBar1;
end;

//将DBGRID中的内容导入到EXCEL中
function ExportToExcel(dbgrid:tdbgrid):boolean;
const
xlNormal=-4143;
var
i,j,k:integer;
str,filename:string;
excel:OleVariant;
SavePlace: TBookmark;
savedialog:tsavedialog;
ProgressBar1:TProgressBar;
begin
result:=false;
filename:='';
if dbgrid.DataSource.DataSet.RecordCount>65536 then
begin
if application.messagebox('需要导出的数据过大，Excel最大只能容纳65536行,是否还要继续？','询问',mb_yesno+mb_iconquestion)=idno then
exit;
end;
screen.Cursor:=crHourGlass;
try
excel:=CreateOleObject('Excel.Application');
excel.workbooks.add;
except
screen.cursor:=crDefault;
showmessage('无法调用Excel！');
exit;
end;
savedialog:=tsavedialog.Create(nil);
savedialog.Filter:='Excel文件(*.xls)|*.xls';
if savedialog.Execute then
begin
if FileExists(savedialog.FileName) then
try
if application.messagebox('该文件已经存在，要覆盖吗？','询问',mb_yesno+mb_iconquestion)=idyes then
DeleteFile(PChar(savedialog.FileName))
else
begin
Excel.Quit;
savedialog.free;
screen.cursor:=crDefault;
Exit;
end;
except
Excel.Quit;
savedialog.free;
screen.cursor:=crDefault;
Exit;
end;
filename:=savedialog.FileName;
end;
savedialog.free;
application.ProcessMessages;
if filename='' then
begin
result:=false;
Excel.Quit;
screen.cursor:=crDefault;
exit;
end;
k:=0;
for i:=0 to dbgrid.Columns.count-1 do
begin
if dbgrid.Columns.Items[i].Visible then
begin
//Excel.Columns[k+1].ColumnWidth:=dbgrid.Columns.Items[i].Title.Column.Width;
excel.cells[1,k+1]:=dbgrid.Columns.Items[i].Title.Caption;
inc(k);
end;
end;

dbgrid.DataSource.DataSet.DisableControls;
saveplace:=dbgrid.DataSource.DataSet.GetBookmark;
dbgrid.DataSource.dataset.First;
i:=2;
if dbgrid.DataSource.DataSet.recordcount>65536 then
ProgressBar1:=ProgressBarform(65536)
else
ProgressBar1:=ProgressBarform(dbgrid.DataSource.DataSet.recordcount);
while not dbgrid.DataSource.dataset.Eof do
begin
k:=0;
for j:=0 to dbgrid.Columns.count-1 do
begin
if dbgrid.Columns.Items[j].Visible then
begin
excel.cells[i,k+1].NumberFormat:='@';
if not dbgrid.DataSource.dataset.fieldbyname(dbgrid.Columns.Items[j].FieldName).isnull then
begin
str := dbgrid.DataSource.dataset.fieldbyname(dbgrid.Columns.Items[j].FieldName).value;
Excel.Cells[i, k + 1] := Str;
end;
inc(k);
end
else
continue;
end;
if i=65536 then
break;
inc(i);
ProgressBar1.StepBy(1);
dbgrid.DataSource.dataset.next;
end;
progressbar1.Owner.Free;
application.ProcessMessages;
dbgrid.DataSource.dataset.GotoBookmark(SavePlace);
dbgrid.DataSource.dataset.EnableControls;

try
if copy(FileName,length(FileName)-3,4)<>'.xls' then
FileName:=FileName+'.xls';
Excel.ActiveWorkbook.SaveAs(FileName,xlNormal,'', '',False,False);
except
Excel.Quit;
screen.cursor:=crDefault;
exit;
end;
//Excel.Visible := true;
Excel.Quit;
screen.cursor:=crDefault;
Result:= true;
end;

//将ADOQUERY的数据集导入到EXCEL中
function queryExportToExcel(queryexport:tadoquery):boolean;
const
xlNormal=-4143;
var
i,j,k:integer;
str,filename:string;
excel:OleVariant;
savedialog:tsavedialog;
ProgressBar1:TProgressBar;
begin
result:=false;
filename:='';
if queryexport.RecordCount>65536 then
begin
if application.messagebox('需要导出的数据过大，Excel最大只能容纳65536行,是否还要继续？','询问',mb_yesno+mb_iconquestion)=idno then
exit;
end;
screen.Cursor:=crHourGlass;
try
excel:=CreateOleObject('Excel.Application');
excel.workbooks.add;
except
screen.cursor:=crDefault;
showmessage('无法调用Excel！');
exit;
end;
savedialog:=tsavedialog.Create(nil);
savedialog.Filter:='Excel文件(*.xls)|*.xls';
if savedialog.Execute then
begin
if FileExists(savedialog.FileName) then
try
if application.messagebox('该文件已经存在，要覆盖吗？','询问',mb_yesno+mb_iconquestion)=idyes then
DeleteFile(PChar(savedialog.FileName))
else
begin
Excel.Quit;
savedialog.free;
screen.cursor:=crDefault;
Exit;
end;
except
Excel.Quit;
savedialog.free;
screen.cursor:=crDefault;
Exit;
end;
filename:=savedialog.FileName;
end;
savedialog.free;
application.ProcessMessages;
if filename='' then
begin
result:=false;
Excel.Quit;
screen.cursor:=crDefault;
exit;
end;
k:=0;
for i:=0 to queryexport.FieldCount-1 do
begin
excel.cells[1,k+1]:=queryexport.Fields[i].FieldName;
inc(k);
end;
queryexport.First;
i:=2;
if queryexport.recordcount>65536 then
ProgressBar1:=ProgressBarform(65536)
else
ProgressBar1:=ProgressBarform(queryexport.recordcount);
while not queryexport.Eof do
begin
k:=0;
for j:=0 to queryexport.FieldCount-1 do
begin
excel.cells[i,k+1].NumberFormat:='@';
if not queryexport.fieldbyname(queryexport.Fields[j].FieldName).isnull then
begin
str:=queryexport.fieldbyname(queryexport.Fields[j].FieldName).AsString;
Excel.Cells[i, k + 1] := Str;
end;
inc(k);
end;
if i=65536 then
break;
inc(i);
ProgressBar1.StepBy(1);
queryexport.next;
end;
progressbar1.Owner.Free;
application.ProcessMessages;
try
if copy(FileName,length(FileName)-3,4)<>'.xls' then
FileName:=FileName+'.xls';
Excel.ActiveWorkbook.SaveAs(FileName,xlNormal,'', '',False,False);
except
Excel.Quit;
screen.cursor:=crDefault;
exit;
end;
//Excel.Visible := true;
Excel.Quit;
screen.cursor:=crDefault;
Result := true;
end;

end.

追问

有这么多么？

Answer 3

这么长的代码啊，但愿有用吧~