为什么我导出到excel表格中的身份证号码是科学计数法?????
代码如下： with Dbgridname.DataSource.DataSet do
begin
pBookMark := GetBookmark;
DisableControls;
for I:=0 to dbgridname.Columns.Count-1 do
begin
if dbgridname.Columns[I].Visible=False then
Continue;
Sheet.Cells[J,I+1] := dbgridname.Columns[I].Title.Caption;
end;
Inc(J);
First;

while not Eof do begin
for I:=0 to dbgridname.Columns.Count-1 do begin
if dbgridname.Columns[I].Visible=False then
Continue;

Sheet.Cells[J,I+1]:=trim(dbgridname.DataSource.DataSet.Fieldbyname(dbgridname.Columns[i].FieldName).asstring);//asstring 不能转换为文本的吗？
//改变颜色，字体颜色和底色
Sheet.Cells[J,I+1].font.ColorIndex:=3;
Sheet.Cells[J,I+1].Select;
sheet.Cells[J,I+1].Interior.ColorIndex:=50
end;

Inc(J);
Next;
end;
GotoBookmark(pBookMark);
FreeBookmark(pBookMark);
EnableControls;
end;
XLApp.activeworkbook.saveas(StrSaveFile);
Application.ProcessMessages;
XLApp.Application.Quit;
end;

[解决办法]
导出数据前加上
Sheet1.Range[ 'b1 ', 'b100 '].NumberFormat:= '@ ';
------解决方案--------------------

在数字前加一个单引号就好了
Sheet.Cells[J,I+1]:= ' ' ' '+trim(dbgridname.DataSource.DataSet.Fieldbyname(dbgridname.Columns[i].FieldName).asstring)；