dbgrideh导出到excel的错误如何解决

[sdweihailh]

采用ADO+ADOQUERY+DBGRIDEH导出到EXCEL里
代码如下:
var ExpClass:TDBGridEhExportClass;
Ext:String;
begin
SaveDialog1.FileName := 'file1.xls';
if (ActiveControl is TDBGridEh) then
if SaveDialog1.Execute then
begin
case SaveDialog1.FilterIndex of
1: begin ExpClass := TDBGridEhExportAsText; Ext := 'txt'; end;
2: begin ExpClass := TDBGridEhExportAsCSV; Ext := 'csv'; end;
3: begin ExpClass := TDBGridEhExportAsHTML; Ext := 'htm'; end;
4: begin ExpClass := TDBGridEhExportAsRTF; Ext := 'rtf'; end;
5: begin ExpClass := TDBGridEhExportAsXLS; Ext := 'xls'; end;
else
ExpClass := nil; Ext := '';
end;
if ExpClass <> nil then
begin
if UpperCase(Copy(SaveDialog1.FileName,Length(SaveDialog1.FileName)-2,3)) <>
UpperCase(Ext) then
SaveDialog1.FileName := SaveDialog1.FileName + '.' + Ext;
SaveDBGridEhToExportFile(ExpClass,TDBGridEh(ActiveControl),
SaveDialog1.FileName,False);
end;
end;
end;

编译以后选择保存的类型是空无法选择，我看EHLIB的demo也是这样写的，点保存无法保存。赐教大家，最好能贴出代码

[gerrylc]

SaveDialog1的Filter属性填上文件类型试试看

[ron_xin]

在 SaveDialog1里设置Filter