delphicsv,txt文本转换成excel .

由于系统使用导出的格式是csv，但是如果数字的长度太长的话，用excle打开会用科学技术法自动截断了。所以开发了一个转换程序。

unit Unit1;



interface



uses

  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,

  Dialogs, StdCtrls, ExtCtrls, ComCtrls, ComObj, StrUtils, WinSkinData,

  WinSkinStore, Gauges, ShellApi, ClipBrd;



type

  TForm1 = class(TForm)

    OpenDialog1: TOpenDialog;

    SaveDialog1: TSaveDialog;

    Panel1: TPanel;

    Edit1: TEdit;

    Edit2: TEdit;

    Button1: TButton;

    Button2: TButton;

    Button3: TButton;

    StatusBar1: TStatusBar;

    SkinData1: TSkinData;

    Timer1: TTimer;

    Gauge1: TGauge;

    progressBar: TProgressBar;

    procedure Button1Click(Sender: TObject);

    procedure Button2Click(Sender: TObject);

    procedure Button3Click(Sender: TObject);

    procedure FormPaint(Sender: TObject);

    procedure StatusBar1DrawPanel(StatusBar: TStatusBar;

      Panel: TStatusPanel; const Rect: TRect);

    procedure FormCreate(Sender: TObject);

    procedure Timer1Timer(Sender: TObject);

  private

    progressBarRect:TRect; // 进度条组件的尺寸

  public

    { Public declarations }

    procedure   DropFiles(var   Message:   TMessage);   message   WM_DropFiles;

  end;



var

  Form1: TForm1;



implementation



{$R *.dfm}



procedure   TForm1.DropFiles(var   Message:   TMessage);

  var

      i,l:   Integer;

      p:   array[0..254]   of   Char;

      s:   String;

  begin

      i   :=   DragQueryFile(Message.wParam,   $FFFFFFFF,   nil,   0);

      for   i   :=   0   to   i   -   1   do   begin

          DragQueryFile(Message.wParam,   i,   p,   255);

          //ShowMessage(StrPas(p));

          s :=  StrPas(p);

          l := Pos('.csv',s);

          if (l > 0) then

            Edit1.Text := StrPas(p)

          else

            ShowMessage('请选择csv文件！');

      end;

  end;



procedure TForm1.Button1Click(Sender: TObject);

begin

StatusBar1.Panels[0].Text :='';

OpenDialog1.Execute;

Edit1.Text := OpenDialog1.FileName;

end;



procedure TForm1.Button2Click(Sender: TObject);

begin

StatusBar1.Panels[0].Text:='';

SaveDialog1.Execute;

Edit2.Text := SaveDialog1.FileName;

end;



procedure TForm1.Button3Click(Sender: TObject);

var

  Excel,WorkBook,xlQuery,A:Variant;

  f:TextFile;

  i,j,k,b,nLen:integer;

  s,xlsFile:string;

  pc:PChar;

  StepCount : Integer;

  vSL:   TStringList;

begin

    try

          if   not   FileExists(Edit1.Text)   then

          begin

             StatusBar1.Panels[0].Text:='请选择CSV文件!!!!!!!';

             exit;

          end;

          xlsFile := Edit1.Text;

          xlsFile := AnsiReplaceText(xlsFile,'.csv','.xls');

          if xlsFile = '' then

          begin

             StatusBar1.Panels[0].Text:='请选择另存为Excel!!!!!!!';

             Exit;

          end;

          //AssignFile(f,Edit1.Text);

          //Reset(f);

          vSL   :=   TStringList.Create;

          //vSL.Delimiter=',';

          vSL.LoadFromFile(Edit1.Text);

          try

            Excel:=CreateOleObject('Excel.Application');

            WorkBook:=CreateOleobject('Excel.Sheet');

          except

            ShowMessage('您的机器里未安装Microsoft Excel.');

            Exit;

          end;

          //动态创建进度条组件progressBar



          StepCount:=vSL.Count; // 循环的总数目

          timer1.Enabled:=true;

          with progressBar do

          begin

          // 先确定进度条组件的尺寸和位置

          Top:=ProgressBarRect.Top;

          Left:=ProgressBarRect.Left;

          Width:=ProgressBarRect.Right-ProgressBarRect.Left;

          Height:=ProgressBarRect.Bottom-ProgressBarRect.Top;

          Parent:=StatusBar1; // parent属性设置为状态栏组件

          Visible:=True; // 使进度条可见

          Min:=0;// 设定进度条的范围和步长

          Max:=StepCount div 300;

          Step:=1;

          end;

          //pb.Visible := true;

          WorkBook := Excel.workbooks.add;

          Excel.worksheets[1].activate;

          Excel.Visible:=false;

//          Clipboard.AsText:=vSL.Text;

          //计算有多少列

          s:=vSL[0];

          pc := PChar(s);

          k:=0;

          b:=1;

          j:=1;

          nLen := strlen(pc);

          while k<nLen do

              begin;

                if pc[k] = ',' then

                begin

                  inc(j);

                end;

                inc(k);

          end;



        A:=VarArrayCreate([0,j],varVariant);

        for   i:=0   to   j   do

             A[i]:=2;



        xlQuery := Excel.worksheets[1].QueryTables.Add('TEXT;'+Edit1.Text,Excel.worksheets[1].Range['A1']);

        //xlQuery.Name := '';

        xlQuery.FieldNames := True;

        xlQuery.RowNumbers := False;

        xlQuery.FillAdjacentFormulas := False;

        xlQuery.PreserveFormatting := True;

        xlQuery.RefreshOnFileOpen := False;

        //xlQuery.RefreshStyle := 'xlInsertDeleteCells';

        xlQuery.SavePassword := False;

        xlQuery.SaveData := True;

        xlQuery.AdjustColumnWidth := True;

        xlQuery.RefreshPeriod := 0;

        xlQuery.TextFilePromptOnRefresh := False;

        xlQuery.TextFilePlatform := 936;

        xlQuery.TextFileStartRow := 1;

        //xlQuery.TextFileParseType := 'xlDelimited';

        //xlQuery.TextFileTextQualifier := 'xlTextQualifierDoubleQuote';

        xlQuery.TextFileConsecutiveDelimiter := False;

        xlQuery.TextFileTabDelimiter := False;

        xlQuery.TextFileSemicolonDelimiter := False;

        xlQuery.TextFileCommaDelimiter := True;

        xlQuery.TextFileSpaceDelimiter := False;

        xlQuery.TextFileColumnDataTypes := A;

        xlQuery.TextFileTrailingMinusNumbers := True;

        xlQuery.Refresh;

          if   FileExists(xlsFile)   then

              DeleteFile(xlsFile);

//          Excel.worksheets[1].Paste;

          WorkBook.SaveAs(xlsFile);

          StatusBar1.Panels[0].Text:='转换成功!!!!!!!';

          progressBar.Visible:=false;

    finally

      if   vSL<>nil then

        vSL.Free;

      if not VarIsEmpty(WorkBook) then WorkBook.close;

      if not VarIsEmpty(Excel) then Excel.quit;

      //if not VarIsEmpty(A) then varfree(A);

      timer1.Enabled:=false;

    end;

end;



procedure TForm1.FormPaint(Sender: TObject);

begin

StatusBar1.Panels[0].Text:='中国建设银行版权所有..........';



end;



procedure TForm1.StatusBar1DrawPanel(StatusBar: TStatusBar;

  Panel: TStatusPanel; const Rect: TRect);

begin

progressBarRect:=Rect;

end;



procedure TForm1.FormCreate(Sender: TObject);

begin

DragAcceptFiles(Handle,   True);

end;



procedure TForm1.Timer1Timer(Sender: TObject);

begin

     progressBar.Stepit;

          //Application.ProcessMessages;

          //Sleep(ProgressBar.Position);

end;



end.

unit Unit1;



interface



uses

  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,

  Dialogs, StdCtrls, ExtCtrls, ComCtrls, ComObj, StrUtils, WinSkinData,

  WinSkinStore, Gauges, ShellApi, ClipBrd;



type

  TForm1 = class(TForm)

    OpenDialog1: TOpenDialog;

    SaveDialog1: TSaveDialog;

    Panel1: TPanel;

    Edit1: TEdit;

    Edit2: TEdit;

    Button1: TButton;

    Button2: TButton;

    Button3: TButton;

    StatusBar1: TStatusBar;

    SkinData1: TSkinData;

    Timer1: TTimer;

    Gauge1: TGauge;

    progressBar: TProgressBar;

    procedure Button1Click(Sender: TObject);

    procedure Button2Click(Sender: TObject);

    procedure Button3Click(Sender: TObject);

    procedure FormPaint(Sender: TObject);

    procedure StatusBar1DrawPanel(StatusBar: TStatusBar;

      Panel: TStatusPanel; const Rect: TRect);

    procedure FormCreate(Sender: TObject);

    procedure Timer1Timer(Sender: TObject);

  private

    progressBarRect:TRect; // 进度条组件的尺寸

  public

    { Public declarations }

    procedure   DropFiles(var   Message:   TMessage);   message   WM_DropFiles;

  end;



var

  Form1: TForm1;



implementation



{$R *.dfm}



procedure   TForm1.DropFiles(var   Message:   TMessage);  

  var  

      i,l:   Integer;

      p:   array[0..254]   of   Char;

      s:   String;

  begin

      i   :=   DragQueryFile(Message.wParam,   $FFFFFFFF,   nil,   0);  

      for   i   :=   0   to   i   -   1   do   begin  

          DragQueryFile(Message.wParam,   i,   p,   255);  

          //ShowMessage(StrPas(p));

          s :=  StrPas(p);

          l := Pos('.csv',s);

          if (l > 0) then

            Edit1.Text := StrPas(p)

          else

            ShowMessage('请选择csv文件！');

      end;  

  end;   



procedure TForm1.Button1Click(Sender: TObject);

begin

StatusBar1.Panels[0].Text :='';

OpenDialog1.Execute;

Edit1.Text := OpenDialog1.FileName;

end;



procedure TForm1.Button2Click(Sender: TObject);

begin

StatusBar1.Panels[0].Text:='';

SaveDialog1.Execute;

Edit2.Text := SaveDialog1.FileName;

end;



procedure TForm1.Button3Click(Sender: TObject);

var

  Excel,WorkBook,xlQuery,A:Variant;

  f:TextFile;

  i,j,k,b,nLen:integer;

  s,xlsFile:string;

  pc:PChar;

  StepCount : Integer;

  vSL:   TStringList;

begin

    try

          if   not   FileExists(Edit1.Text)   then

          begin

             StatusBar1.Panels[0].Text:='请选择CSV文件!!!!!!!';

             exit;

          end;

          xlsFile := Edit1.Text;

          xlsFile := AnsiReplaceText(xlsFile,'.csv','.xls');

          if xlsFile = '' then

          begin

             StatusBar1.Panels[0].Text:='请选择另存为Excel!!!!!!!';

             Exit;

          end;

          //AssignFile(f,Edit1.Text);

          //Reset(f);

          vSL   :=   TStringList.Create;

          //vSL.Delimiter=',';

          vSL.LoadFromFile(Edit1.Text);

          try

            Excel:=CreateOleObject('Excel.Application');

            WorkBook:=CreateOleobject('Excel.Sheet');

          except

            ShowMessage('您的机器里未安装Microsoft Excel.');

            Exit;

          end;

          //动态创建进度条组件progressBar



          StepCount:=vSL.Count; // 循环的总数目

          timer1.Enabled:=true;

          with progressBar do

          begin

          // 先确定进度条组件的尺寸和位置

          Top:=ProgressBarRect.Top;

          Left:=ProgressBarRect.Left;

          Width:=ProgressBarRect.Right-ProgressBarRect.Left;

          Height:=ProgressBarRect.Bottom-ProgressBarRect.Top;

          Parent:=StatusBar1; // parent属性设置为状态栏组件

          Visible:=True; // 使进度条可见          

          Min:=0;// 设定进度条的范围和步长

          Max:=StepCount div 300;

          Step:=1;

          end;

          //pb.Visible := true;

          WorkBook := Excel.workbooks.add;

          Excel.worksheets[1].activate;

          Excel.Visible:=false;

//          Clipboard.AsText:=vSL.Text;

          //计算有多少列

          s:=vSL[0];

          pc := PChar(s);

          k:=0;

          b:=1;

          j:=1;

          nLen := strlen(pc);

          while k<nLen do

              begin;

                if pc[k] = ',' then

                begin

                  inc(j);

                end;

                inc(k);

          end;



        A:=VarArrayCreate([0,j],varVariant);

        for   i:=0   to   j   do

             A[i]:=2;



        xlQuery := Excel.worksheets[1].QueryTables.Add('TEXT;'+Edit1.Text,Excel.worksheets[1].Range['A1']);

        //xlQuery.Name := '';

        xlQuery.FieldNames := True;

        xlQuery.RowNumbers := False;

        xlQuery.FillAdjacentFormulas := False;

        xlQuery.PreserveFormatting := True;

        xlQuery.RefreshOnFileOpen := False;

        //xlQuery.RefreshStyle := 'xlInsertDeleteCells';

        xlQuery.SavePassword := False;

        xlQuery.SaveData := True;

        xlQuery.AdjustColumnWidth := True;

        xlQuery.RefreshPeriod := 0;

        xlQuery.TextFilePromptOnRefresh := False;

        xlQuery.TextFilePlatform := 936;

        xlQuery.TextFileStartRow := 1;

        //xlQuery.TextFileParseType := 'xlDelimited';

        //xlQuery.TextFileTextQualifier := 'xlTextQualifierDoubleQuote';

        xlQuery.TextFileConsecutiveDelimiter := False;

        xlQuery.TextFileTabDelimiter := False;

        xlQuery.TextFileSemicolonDelimiter := False;

        xlQuery.TextFileCommaDelimiter := True;

        xlQuery.TextFileSpaceDelimiter := False;

        xlQuery.TextFileColumnDataTypes := A;

        xlQuery.TextFileTrailingMinusNumbers := True;

        xlQuery.Refresh;

          if   FileExists(xlsFile)   then

              DeleteFile(xlsFile);

//          Excel.worksheets[1].Paste;

          WorkBook.SaveAs(xlsFile);

          StatusBar1.Panels[0].Text:='转换成功!!!!!!!';

          progressBar.Visible:=false;

    finally

      if   vSL<>nil then

        vSL.Free;

      if not VarIsEmpty(WorkBook) then WorkBook.close;

      if not VarIsEmpty(Excel) then Excel.quit;

      //if not VarIsEmpty(A) then varfree(A);

      timer1.Enabled:=false;

    end;

end;



procedure TForm1.FormPaint(Sender: TObject);

begin

StatusBar1.Panels[0].Text:='中国建设银行版权所有..........';



end;



procedure TForm1.StatusBar1DrawPanel(StatusBar: TStatusBar;

  Panel: TStatusPanel; const Rect: TRect);

begin

progressBarRect:=Rect;

end;



procedure TForm1.FormCreate(Sender: TObject);

begin

DragAcceptFiles(Handle,   True);

end;



procedure TForm1.Timer1Timer(Sender: TObject);

begin

     progressBar.Stepit;     

          //Application.ProcessMessages;

          //Sleep(ProgressBar.Position);

end;



end.

原来使用的是

         for i:=1 to StepCount do

          begin

            //Readln(f,s);

            progressBar.Stepit;// 循环使进度显示条累加

            s:=vSL[i-1];

            pc := PChar(s);

            k:=0;

            b:=1;

            j:=0;

            nLen := strlen(pc);

            while k<nLen do

              begin;

                if pc[k] = ',' then

                begin

                  inc(j);

                  Excel.cells[i,j].NumberFormat:='@';

                  Excel.cells[i,j].value:=Copy(s,b,k-b+1);

                  b:=k+2;

                end;

                inc(k);

            end;

            inc(j);

            Excel.cells[i,j].NumberFormat:='@';

            Excel.cells[i,j].value:=Copy(s,b,k-b+1);

          end;

上面的代码是遍历整个文件，判断是否有逗号，然后对每个格子插入数据。这样做的效率很低，
3千多行的数据转换用了5分钟。后来使用vba，先用excle录制了一段外部数据导入的宏。
<PRE class=vb.net name="code">Sub Macro3()

'

' Macro3 Macro

' 宏由 ZHL 录制，时间: 2008-7-3

'



'

    Cells.Select

    With ActiveSheet.QueryTables.Add(Connection:= _

        "TEXT;C:/Documents and Settings/zhl/桌面/200807021528053658.csv", Destination:= _

        Range("A1"))

        .Name = "200807021528053658_1"

        .FieldNames = True

        .RowNumbers = False

        .FillAdjacentFormulas = False

        .PreserveFormatting = True

        .RefreshOnFileOpen = False

        .RefreshStyle = xlInsertDeleteCells

        .SavePassword = False

        .SaveData = True

        .AdjustColumnWidth = True

        .RefreshPeriod = 0

        .TextFilePromptOnRefresh = False

        .TextFilePlatform = 936

        .TextFileStartRow = 1

        .TextFileParseType = xlDelimited

        .TextFileTextQualifier = xlTextQualifierDoubleQuote

        .TextFileConsecutiveDelimiter = False

        .TextFileTabDelimiter = False

        .TextFileSemicolonDelimiter = False

        .TextFileCommaDelimiter = True

        .TextFileSpaceDelimiter = False

        .TextFileColumnDataTypes = Array(2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, _

        2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2)

        .TextFileTrailingMinusNumbers = True

        .Refresh BackgroundQuery:=False

    End With

End Sub

然后根据上面的宏写了如下的delphi代码：
<PRE class=csharp name="code">        xlQuery := Excel.worksheets[1].QueryTables.Add('TEXT;'+Edit1.Text,Excel.worksheets[1].Range['A1']);

        //xlQuery.Name := '';

        xlQuery.FieldNames := True;

        xlQuery.RowNumbers := False;

        xlQuery.FillAdjacentFormulas := False;

        xlQuery.PreserveFormatting := True;

        xlQuery.RefreshOnFileOpen := False;

        //xlQuery.RefreshStyle := 'xlInsertDeleteCells';

        xlQuery.SavePassword := False;

        xlQuery.SaveData := True;

        xlQuery.AdjustColumnWidth := True;

        xlQuery.RefreshPeriod := 0;

        xlQuery.TextFilePromptOnRefresh := False;

        xlQuery.TextFilePlatform := 936;

        xlQuery.TextFileStartRow := 1;

        //xlQuery.TextFileParseType := 'xlDelimited';

        //xlQuery.TextFileTextQualifier := 'xlTextQualifierDoubleQuote';

        xlQuery.TextFileConsecutiveDelimiter := False;

        xlQuery.TextFileTabDelimiter := False;

        xlQuery.TextFileSemicolonDelimiter := False;

        xlQuery.TextFileCommaDelimiter := True;

        xlQuery.TextFileSpaceDelimiter := False;

        xlQuery.TextFileColumnDataTypes := A;

        xlQuery.TextFileTrailingMinusNumbers := True;

        xlQuery.Refresh;</PRE>
使用excle的导入功能后转换原来的文件之用了10秒钟。</PRE>