FastReportDelphi动态生成报表.doc

字段名、字段数不确定时，用 FastReport 动态生成报表unit Unit1; interface uses Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics, Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Vcl.Grids, Vcl.DBGrids, Datasnap.Provider, Data.Win.ADODB, Data.DB, Datasnap.DBClient, frxClass, frxPreview, frxDesgn, frxDBSet; type TForm1 = class(TForm) ADOConnection1: TADOConnection; DataSource1: TDataSource; ClientDataSet1: TClientDataSet; ADOQuery1: TADOQuery; DataSetProvider1: TDataSetProvider; DBGrid1: TDBGrid; Button1: TButton; Button2: TButton; frxDBDataset1: TfrxDBDataset; frxDesigner1: TfrxDesigner; frxPreview1: TfrxPreview; frxReport1: TfrxReport; Button3: TButton; procedure Button1Click(Sender: TObject); procedure Button2Click(Sender: TObject); procedure Button3Click(Sender: TObject); private { Private declarations } public { Public declarations } end; var Form1: TForm1; implementation {$R *.dfm} procedure TForm1.Button1Click(Sender: TObject); begin clientdataset1.Close; clientdataset1.CommandText:= select user_id,user_name ,sal_no from t_user ; clientdataset1.Open; end; procedure TForm1.Button2Click(Sender: TObject); var pDataPage :TfrxDataPage; pPage :TfrxReportPage ; pBand :TfrxBand; pDataBand :TfrxMasterData ; pMemo :TfrxMemoView ; i:integer; x,y,z,width:extended; begin //?清除原报表内容 frxReport1.Clear;// 设置 Report 的 DataSet frxReport1.DataSets.Add(frxDBdataset1);// 添加 Report 的 Data 页 pDataPage := TfrxDatapage.Create(frxReport1);// 增加报表显示内容 pPage := TfrxReportPage.Create(frxReport1); ppage.CreateUniqueName();// 设置 Fields 的默认尺寸 pPage.SetDefaults;// 页面方向 // pPage.Orientation := poLandscape;// 页面边距 pPage.TopMargin := 20; pPage.LeftMargin := 20; pPage.Margin := 20; pPage.BottomMargin := 20; // 创建报表 Title Band pBand := TfrxReportTitle.Create(pPage); pBand.CreateUniqueName();