含有打印、统计DataGridView(1)

using System;
using System.Collections.Generic;
using System.Text;
using System.Drawing.Printing;
using System.Drawing;
using System.Windows.Forms;
using System.Windows;
using System.Data;
using Microsoft.Office;
namespace KingBoy
{
    class MyDataGrid:DataGridView
    {
        #region var
        //用户可自定义 
        private Font tableFont=new Font("宋体", 9);  // '当前要打印文本的字体及字号 
        private Font headFont=new Font("黑体", 12, FontStyle.Regular);//表头字体 
        private Font subHeadFont=new Font("楷体_GB2312", 10, FontStyle.Regular); //副表头字体 
        private String headText="" ; //表头文字 
        private String subHeadLeftText="";  //副表头左文字
        private String subHeadRightText="";  //副表头右文字 
        private int headHeight=40;  //表头高度 
        private int subHeadHeight=30;  //副表头高度 
        private Font footFont=new Font("黑体", 12, FontStyle.Underline); //表脚字体
        private Font subFootFont=new Font("楷体_GB2312", 10, FontStyle.Regular);//副表脚字体 
        private String footText=""; ////表脚文字 
        private String subFootLeftText="" ;  //副表脚左文字 
        private String subFootRightText="" ;  //副表脚右文字
        private int footHeight=40; //表脚高度
        private int subFootHeight=30;  //副表脚高度 
        private String worker="";  //'制表人
        private double sum=0; //汇总数据
        private int x_unit=0; //表的基本单位
        private int y_unit= 24;

//以下为模块内部使用      
        private PrintDocument printDocument1;     
        private DataRow dataGridRow;
        private DataTable dataTable1;
        private int Cols; //                          '当前要打印的列                          
        private int ColsCount; //                    '当前DATAGRID共有多少列       
        private int pageRecordNumber; //                 '当前要所要打印的记录行数,由计算得到. 
        private int printingPageNumber=0;//           '正要打印的页号 
        private int pageNumber;//                       '共需要打印的页数
        private int printRecordLeave;//                 '当前还有多少页没有打印 
        private int printRecordComplete=0;  //        '已经打印完的记录数 
        private int pLeft,pTop,pRight,pBottom,pWidth,pHeight;
        private SolidBrush drawBrush = new SolidBrush(System.Drawing.Color.Black);//   '当前画笔颜色 
        private int pRecordNumber=0  ;//'每页打印的记录条数 
        private int totalPage;  //总共应该打印的页数        
        #endregion
        #region property
         
        /// <summary>
        ///用户自定义字体及字号
        /// </summary>
        public Font setTableFont
        {
         set{tableFont=value;}
        }
        /// <summary>
        /// 设置表头字体
        /// </summary>
       public Font setHeadFont
       {
        set{headFont =value;}
       }
        public Font setFootFont
        {
         set{footFont=value;}
        }
       public Font setSubFootFont
       {
        set{subFootFont =value;}
       }
      public string setHeadText
      {
       set{headText =value;}
      }
      public string setSubHeadLeftText
      {
        set{subHeadLeftText =value;}
      }
        public string setSubHeadRightText
        {
         set{subHeadRightText =value;}
        }
       public string setFootText
       {
         set{footText =value;}
       }

public string setSubFootLeftText
       {
         set{subFootLeftText =value;}
       }
       public string setSubFootRightText
       {
         set{subFootRightText =value;}
       }
       public int setHeadHeight
       {
        set{headHeight =value;}
       }
public int setSubHeadHeight
{
 set{
   subHeadHeight =value;
 }
}
        public int setFootHeight
        {
         set{footHeight =value;}
        }
       public int setSubFootHeight
       {
         set{subFootHeight =value;}
       }
        public int setCellHeight
        {
          set{y_unit =value;}
        }
        /// <summary>
        /// 汇总数据
        /// </summary>
        public double setSum
        {
         set{sum=value;}
        }
        /// <summary>
        /// 设置制表人
        /// </summary>
      public string setWorker
      {
       set{worker =value;}
      }
       
        #endregion
        #region method
        /// <summary>
        /// 根据列明统计该列值总和
        /// </summary>
        /// <param name="colomnName">列明</param>
        /// <returns>如果该列明是数值型，则返回统计结果，否则返回0</returns>
        public double addColumnDGV(string colomnName)
        {
          try
          {
              int i=0; //循环下标
              double sum=0;//用来保存统计临时结果
              for(i=0;i<this.Rows.Count ;i++)
                  try
                  { sum=sum+Convert.ToDouble(this.Rows[i].Cells[colomnName].Value); }//获取i行colomnName列值
                  catch (Exception)
                  { }                  
              return sum;
          }
            catch(Exception )
          {
            return 0;
            }
        }
        public double addColumnDGV(string colomnName,char ch)
        {
            try
            {
                int i = 0; //循环下标
                double sum = 0;//用来保存统计临时结果
                for (i = 0; i < this.Rows.Count; i++)
                    try
                    { sum = sum + Convert.ToDouble(this.Rows[i].Cells[colomnName].Value.ToString().Substring(1, this.Rows[i].Cells[colomnName].Value.ToString().Length-1)); }//获取i行colomnName列值
                    catch (Exception)
                    { }
                return sum;
            }
            catch (Exception)
            {
                return 0;
            }
        }
        /// <summary>
        /// 统计某行从intStartCol列到intEndCol和
        /// </summary>
        /// <param name="row">行值</param>
        /// <param name="intStartCol">起始列索引值</param>
        /// <param name="intEndCol">终止列索引值</param>
        /// <returns>合法统计结果，非法返回0</returns>
        public double addRowDGV(int row,int intStartCol,int intEndCol)
        {
          try
          {
              //判断列的起始和终止索引是否有效,行值在有效的范围内
            if (this.Columns.Count >0 && intStartCol >=0 && intEndCol <this.Columns.Count && row<this.Rows.Count ) 
            {
              int i;
                double tmpDec=0;
                //循环统计该行起始列到终止列累加和，从intStartCol到intEndCol列都是数值型数据
                for (i=intStartCol;i<intEndCol;i++)
                    try
                    {tmpDec=tmpDec +(double)(this.Rows[row].Cells[i].Value); }
                    catch (Exception)
                    { }
                    
                return tmpDec;
            }
            else
                return 0;
          }
            catch(Exception)
          {
            return 0;
            }
        }    
        /// <summary>
        /// 导出数据到Excel
        /// <param name="startComlumn">起始列,0表示第一列，依次类推</param>
        /// <param name="endColumn" >终止列,1表示第一列，依次类推</param>
        /// </summary>
        public void loadDataToExcel(int startComlumn,int endColumn)
        {
          if (this.Rows.Count <=0)
          { MessageBox.Show("没有数据，无法导出！");
            return ;
          }
          if (startComlumn > endColumn)
          {
              MessageBox.Show("起始列不能大于终止列！");
              return;
          }
          if (startComlumn>=this.Columns.Count || endColumn>=this.Columns.Count)
          {
              MessageBox.Show("起始列和终止列都不能大于总列数！");
              return;
          }
          //创建Excel中的新表         
          Excel.ApplicationClass oExcel = new Excel.ApplicationClass();
          oExcel.Application.Workbooks.Add(true);   
          
          int n=0;
          int i=0;         
          //填充表头
          for (i = startComlumn; i < endColumn; i++)
          { 
          oExcel.Cells[1, i+1] = this.Columns[i].HeaderText;
          }
          for(n=0;n<this.Rows.Count;n++)
              for (i = startComlumn; i <endColumn; i++)
              { 
               oExcel.Cells[n+2, i+1] = this.Rows[n].Cells[i].Value.ToString();
             
              }
          oExcel.Visible = true;        
          oExcel.Quit();
          oExcel = null;
            GC.Collect();
              
        }