使用.NET自带的类实现DataGrid报表的打印。

usingSystem;usingSystem.Windows.Forms;usingSyst运维

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using System; using System.Windows.Forms; using System.Drawing; using System.Drawing.Printing; using System.Data; using System.Collections; using DataLibrary;

namespace ControlLibrary {  /// <summary>  /// DataGrid打印  /// </summary>  public class DataGridPrinter  {   private PrintDocument ThePrintDocument;   private DataTable TheTable;   private DataGrid  TheDataGrid;   public int RowCount = 0;   private const int kVerticalCellLeeway = 10;   public int PageNumber = 1;   public ArrayList Lines = new ArrayList();   public int header=0;   public int footer=0;   DataCatena DataCatena1;   public int PageWidth;   public int PageHeight;   public int TopMargin;   public int BottomMargin;   int GridWidth = 0;   public int LeftMargin;   public int RightMargin;   public string PaperName;   public int pagecount;   private int rows_page;   public bool showfooter;

  public int bodylength   {    get    {     if(this.PageNumber<this.pagecount)      return (1+this.rows_page) * ((int)(TheDataGrid.Font.SizeInPoints)  + kVerticalCellLeeway);     else      return (this.TheTable.Rows.Count + 1 -(this.rows_page*(this.PageNumber-1))) * ( (int)(TheDataGrid.Font.SizeInPoints)  + kVerticalCellLeeway);    }   }

  public DataGridPrinter(DataGrid aGrid, PrintDocument aPrintDocument,string theform,int Header,int Footer)   {    //    // TODO: Add constructor logic here    //    this.header=Header;    this.footer=Footer;    this.showfooter=true;    TheDataGrid = aGrid;    ThePrintDocument = aPrintDocument;    if(theform!="")    {     DataCatena1=new DataCatena();     DataView myDV=DataCatena1.GetDataView("select * from yh_bbdy where bm='"+theform +"'");

    this.PaperName=myDV[0]["zm"].ToString();

    PaperSize pkSize;

    if(myDV[0]["fx"].ToString()=="True")      this.ThePrintDocument.DefaultPageSettings.Landscape=true;     else      this.ThePrintDocument.DefaultPageSettings.Landscape=false;

    int found=0;     for (int i = 0; i < this.ThePrintDocument.PrinterSettings.PaperSizes.Count; i++)     {      pkSize = this.ThePrintDocument.PrinterSettings.PaperSizes[i];      if(pkSize.PaperName==this.PaperName)      {       this.ThePrintDocument.DefaultPageSettings.PaperSize=pkSize;       found=1;       i=this.ThePrintDocument.PrinterSettings.PaperSizes.Count;       if(this.ThePrintDocument.DefaultPageSettings.Landscape)       {        PageHeight = pkSize.Width;        PageWidth = pkSize.Height;       }       else       {        PageWidth = pkSize.Width;        PageHeight = pkSize.Height;       }      }     }

    if(found==0)     {      if(this.ThePrintDocument.DefaultPageSettings.Landscape)      {       PageHeight = Int32.Parse(myDV[0]["zk"].ToString());       PageWidth = Int32.Parse(myDV[0]["zc"].ToString());      }      else      {       PageWidth = Int32.Parse(myDV[0]["zk"].ToString());       PageHeight = Int32.Parse(myDV[0]["zc"].ToString());      }     }

    TopMargin = Int32.Parse(myDV[0]["sk"].ToString());     BottomMargin = Int32.Parse(myDV[0]["xk"].ToString());     RightMargin = Int32.Parse(myDV[0]["rightk"].ToString());     LeftMargin = Int32.Parse(myDV[0]["leftk"].ToString());    }    else    {     PageWidth = ThePrintDocument.DefaultPageSettings.PaperSize.Width;     PageHeight = ThePrintDocument.DefaultPageSettings.PaperSize.Height;     TopMargin = ThePrintDocument.DefaultPageSettings.Margins.Top;     BottomMargin = ThePrintDocument.DefaultPageSettings.Margins.Bottom;     RightMargin = ThePrintDocument.DefaultPageSettings.Margins.Right;     LeftMargin = ThePrintDocument.DefaultPageSettings.Margins.Left;    }

   PageWidth -= this.LeftMargin ;    PageWidth -= this.RightMargin;

   this.rows_page=(int)((float)(this.PageHeight-this.TopMargin-this.BottomMargin-this.footer-this.header)/(TheDataGrid.Font.SizeInPoints + kVerticalCellLeeway));

   for (int k = 0; k < TheDataGrid.TableStyles[0].GridColumnStyles.Count; k++)    {     GridWidth += TheDataGrid.TableStyles[0].GridColumnStyles[k].Width;  //  TheTable.Columns[k].ToString();    }

  }

  public void DrawHeader(Graphics g)   {    SolidBrush ForeBrush = new SolidBrush(TheDataGrid.HeaderForeColor);    SolidBrush BackBrush = new SolidBrush(Color.White);   //(TheDataGrid.HeaderBackColor);    Pen TheLinePen = new Pen(TheDataGrid.GridLineColor, 1);    StringFormat cellformat = new StringFormat();    cellformat.Trimming = StringTrimming.EllipsisCharacter;    cellformat.FormatFlags = StringFormatFlags.NoWrap | StringFormatFlags.LineLimit;    cellformat.Alignment= StringAlignment.Center;

   int columnwidth = 0;

   int initialRowCount = RowCount;

   // draw the table header    float startxposition = this.LeftMargin;                      //TheDataGrid.Location.X;    RectangleF nextcellbounds = new RectangleF(0,0, 0, 0);

   /*       这一段是画表头底色的代码

      RectangleF HeaderBounds  = new RectangleF(0, 0, 0, 0);

      HeaderBounds.X = this.LeftMargin;       //TheDataGrid.Location.X;       HeaderBounds.Y =  + (RowCount - initialRowCount) * (TheDataGrid.Font.SizeInPoints  + kVerticalCellLeeway);       HeaderBounds.Height = TheDataGrid.Font.SizeInPoints + kVerticalCellLeeway;       HeaderBounds.Width = PageWidth;    */    float y1=(float)(header+this.TopMargin);

   g.DrawLine(TheLinePen, this.LeftMargin, y1, this.LeftMargin + this.PageWidth, y1);    y1=y1+ (float)(TheDataGrid.Font.SizeInPoints + kVerticalCellLeeway);    g.DrawLine(TheLinePen, this.LeftMargin, y1, this.LeftMargin + this.PageWidth, y1);

   //   g.FillRectangle(BackBrush, HeaderBounds);

   for (int k = 0; k < this.TheDataGrid.TableStyles[0].GridColumnStyles.Count; k++)    {     columnwidth = TheDataGrid.TableStyles[0].GridColumnStyles[k].Width * PageWidth / this.GridWidth;

    string nextcolumn = TheDataGrid.TableStyles[0].GridColumnStyles[k].HeaderText;  //  TheTable.Columns[k].ToString(); + (RowCount - initialRowCount) * (TheDataGrid.Font.SizeInPoints  + kVerticalCellLeeway)     RectangleF cellbounds = new RectangleF(startxposition, header + TopMargin+2 ,      columnwidth,      TheDataGrid.HeaderFont.SizeInPoints + kVerticalCellLeeway-2);     nextcellbounds = cellbounds;

    if (startxposition + columnwidth <= PageWidth+this.LeftMargin)     {      g.DrawString(nextcolumn, TheDataGrid.HeaderFont, ForeBrush, cellbounds, cellformat);     }

    startxposition = startxposition + columnwidth;

   }    y1=y1+ (float)(TheDataGrid.Font.SizeInPoints + kVerticalCellLeeway);    g.DrawLine(TheLinePen, this.LeftMargin, y1, this.LeftMargin + this.PageWidth, y1);    //if (TheDataGrid.GridLineStyle != DataGridLineStyle.None)    // g.DrawLine(TheLinePen, TheDataGrid.Location.X, nextcellbounds.Bottom, PageWidth, nextcellbounds.Bottom);   }

  public void SetDataSource(DataTable aTable)   {    TheTable = aTable;    this.pagecount=(int)Math.Ceiling((double)(TheTable.Rows.Count)/(double)(this.rows_page));    // MessageBox.Show("rows_count:"+TheTable.Rows.Count.ToString()+" rows_page:"+rows_page.ToString() + "page_count:" +this.pagecount.ToString());    // this.ThePrintDocument   }

  public bool DrawRows(Graphics g)   {    int lastRowBottom = TopMargin;    Lines.Clear();

   try    {     SolidBrush ForeBrush = new SolidBrush(TheDataGrid.ForeColor);     SolidBrush BackBrush = new SolidBrush(TheDataGrid.BackColor);     SolidBrush AlternatingBackBrush = new SolidBrush(TheDataGrid.AlternatingBackColor);     Pen TheLinePen = new Pen(TheDataGrid.GridLineColor, 1);     StringFormat cellformat = new StringFormat();     cellformat.Trimming = StringTrimming.EllipsisCharacter;     cellformat.FormatFlags = StringFormatFlags.NoWrap | StringFormatFlags.LineLimit;     int columnwidth = PageWidth/TheDataGrid.TableStyles[0].GridColumnStyles.Count;

    int initialRowCount = (this.PageNumber-1)*this.rows_page;     int endrow=initialRowCount+this.rows_page;

    RectangleF RowBounds  = new RectangleF(0, 0, 0, 0);

    // draw vertical lines

    // draw the rows of the table     for (int i = initialRowCount; i < TheTable.Rows.Count && i< endrow; i++)     {      DataRow dr = TheTable.Rows[i];      int startxposition = this.LeftMargin+2;      //TheDataGrid.Location.X;

     RowBounds.X = 0;      RowBounds.Y = header + TopMargin + ((RowCount - initialRowCount)+1) * (TheDataGrid.Font.SizeInPoints  + kVerticalCellLeeway);      RowBounds.Height = TheDataGrid.Font.SizeInPoints + kVerticalCellLeeway;      RowBounds.Width = PageWidth;

     /*  ///这一段是画表格底色的代码           if (i%2 == 0)           {            g.FillRectangle(BackBrush, RowBounds);           }           else           {            g.FillRectangle(AlternatingBackBrush, RowBounds);           }      */

     for (int j = 0; j < TheDataGrid.TableStyles[0].GridColumnStyles.Count; j++)      {       columnwidth = TheDataGrid.TableStyles[0].GridColumnStyles[j].Width* PageWidth / this.GridWidth -2;       RectangleF cellbounds = new RectangleF(startxposition,        header + TopMargin + 2 +        ((RowCount - initialRowCount) + 1) * (TheDataGrid.Font.SizeInPoints  + kVerticalCellLeeway),        columnwidth,        TheDataGrid.Font.SizeInPoints + kVerticalCellLeeway);

      if (startxposition + columnwidth <= PageWidth)       {        g.DrawString(dr[(TheDataGrid.TableStyles[0].GridColumnStyles[j].MappingName)].ToString(), TheDataGrid.Font, ForeBrush, cellbounds, cellformat);       }

      startxposition = startxposition + columnwidth+2;      }

     Lines.Add(RowBounds.Bottom);      lastRowBottom = (int)RowBounds.Bottom;

     RowCount++;     }

    DrawHorizontalLines(g, Lines);     DrawVerticalGridLines(g, TheLinePen,lastRowBottom);     if(this.showfooter==true)      DrawFooter(g);

    if (this.PageNumber<this.pagecount)     {      return true;     }     else     {      return false;     }

   }    catch (Exception ex)    {     MessageBox.Show(ex.Message.ToString());

    return false;    }

  }

  void DrawFooter(Graphics g)   {    FontFamily fontFamily = new FontFamily("宋体");

   string text="第"+this.PageNumber.ToString()+"页 共"     +this.pagecount.ToString()+"页";

   Font font = new Font(     fontFamily, 10,     FontStyle.Regular,     GraphicsUnit.Point);

   SizeF size= g.MeasureString(text,font);

   int startpos = this.PageHeight     -this.BottomMargin;

   SolidBrush ForeBrush = new SolidBrush(Color.Black);

   StringFormat cellformat = new StringFormat();

   g.DrawString(text,font,ForeBrush,     (this.PageWidth-size.Width)/2 + this.LeftMargin,     startpos, cellformat);

   text="【Cobainsoft】";

   size= g.MeasureString(text,font);

   g.DrawString(text,font,ForeBrush,     this.PageWidth + this.LeftMargin - size.Width-3,     startpos, cellformat);

  }

  void DrawHorizontalLines(Graphics g, ArrayList lines)   {    Pen TheLinePen = new Pen(TheDataGrid.GridLineColor, 1);

   if (TheDataGrid.GridLineStyle == DataGridLineStyle.None)     return;

   int i;

   for (i = 0;  i < lines.Count; i++)    {     g.DrawLine(TheLinePen, this.LeftMargin, (float)lines[i], this.LeftMargin + this.PageWidth, (float)lines[i]);    }

  }

  void DrawVerticalGridLines(Graphics g, Pen TheLinePen, int bottom)   {    if (TheDataGrid.GridLineStyle == DataGridLineStyle.None)     return;

   int posx=0;

   //画最左边的竖线

   g.DrawLine(TheLinePen, this.LeftMargin + posx,     header + TopMargin,     this.LeftMargin + posx,     bottom);

   //画最右边的竖线    g.DrawLine(TheLinePen, this.LeftMargin + this.PageWidth,     header + TopMargin,     this.LeftMargin + this.PageWidth,     bottom);

   int total=TheDataGrid.TableStyles[0].GridColumnStyles.Count -1;    for (int k = 0; k < total; k++)    {     posx+=(TheDataGrid.TableStyles[0].GridColumnStyles[k].Width) * this.PageWidth / this.GridWidth;     g.DrawLine(TheLinePen, this.LeftMargin + posx,      header + TopMargin,      this.LeftMargin + posx,      bottom);    }   }

  public bool DrawDataGrid(Graphics g)   {

   try    {     DrawHeader(g);     bool bContinue = DrawRows(g);     return bContinue;    }    catch (Exception ex)    {     MessageBox.Show(ex.Message.ToString());     return false;    }

  }

 }

}

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