导出/导入Tdbgrideh数据

unit uExport;

interface

uses
  DBGridEhImpExp, DBGridEh, SysUtils, Dialogs, ComObj, ActiveX, Variants, db,
  FormWait;

procedure ExpDbgridEh(grid:TDBGridEh);
procedure ImpDbgridEH(Grid:TDBGridEh);

implementation

//==============================================================================
// 增加进度条显示 by cxg 2008-01-05 10:08:09
//==============================================================================

procedure ImpDbgridEH(Grid:TDBGridEh);
var
  OpenDialog:TOpenDialog;
begin
  if (not Assigned(grid)) or (not grid.DataSource.DataSet.Active) then
    exit;
  OpenDialog:=TOpenDialog.create(nil);
  try
    OpenDialog.Filter:='*.HTM|文本文件'
    OpenDialog.FilterIndex:=1;
    if OpenDialog.Execute then
    begin
      ShowWaitText('请稍候');
      LoadDBGridEhFromImportFile(TDBGridEhImportAsText,
        Grid,OpenDialog.FileName,True);
    end; 
  finally
    OpenDialog.Free;
    ShowWaitText();
  end;  
end; 

procedure ExpDbgridEh(grid:TDBGridEh);
var
  ExpClass:TDBGridEhExportClass;
  Ext:String;
  SaveDialog:TSaveDialog;
begin
  if (not Assigned(grid)) or (not grid.DataSource.DataSet.Active)
    or (grid.DataSource.DataSet.IsEmpty) then exit;
  SaveDialog:=TSaveDialog.Create(nil);
  try
    SaveDialog.FileName := 'file1';
    SaveDialog.Filter:='EXCEL电子表格|*.XLS|HTML网页|*.HTM|文本文件|*.TXT|CSV'
      +'|*.CSV|RTF富文本|*.RTF';
    SaveDialog.FilterIndex:=1;
    if SaveDialog.Execute then
    begin
      ShowWaitText('请稍候');  
      try
        case SaveDialog.FilterIndex of
          1: begin ExpClass := TDBGridEhExportAsXLS; Ext := 'xls'; end;
          2: begin ExpClass := TDBGridEhExportAsHTML; Ext := 'htm'; end;
          3: begin ExpClass := TDBGridEhExportAsText; Ext := 'txt'; end;
          4: begin ExpClass := TDBGridEhExportAsCSV; Ext := 'csv'; end;
          5: begin ExpClass := TDBGridEhExportAsRTF; Ext := 'rtf'; end;
        else
          ExpClass := nil; Ext := '';
        end;
        if ExpClass <> nil then
        begin
          if UpperCase(Copy(SaveDialog.FileName,
            Length(SaveDialog.FileName)-2,3))<> UpperCase(Ext) then
            SaveDialog.FileName := SaveDialog.FileName + '.' + Ext;
          SaveDBGridEhToExportFile(ExpClass,grid,SaveDialog.FileName,true);
        end;
      finally
        ShowWaitText();
      end;
    end;
  finally
    FreeAndNil(SaveDialog);
  end; 
end;

end.