Excel转Jpg（Microsoft.Office.Interop.Excel）

/*
 *Made By Anby 
 * 2012-10.31
 * Good Luck!~
 * Excel转换jpg
 * 记得引用Microsoft.Office.Interop.Excel;
 */
using System.Drawing;
using System.Linq;
using System.Windows.Forms;
using EXCEL = Microsoft.Office.Interop.Excel;
using System;
using System.Diagnostics;
using System.IO;

namespace ExcelConvertHelper
{ 
    class ExcelToImage
    {

        /// <summary>
        /// 打开Excel文件
        /// </summary>
        /// <returns></returns>
        public static string  OpenExcelFile()
        {
            OpenFileDialog opf = new OpenFileDialog();
            string excelFilePath = "";
            opf.Filter = "Excel文件(*.xls)|*.xls";
            opf.FilterIndex = 1;
            if (opf.ShowDialog() == DialogResult.OK)
            {
                excelFilePath = opf.FileName;
            }
            else
            {
                excelFilePath = "";
            }
            return excelFilePath;
        }

        public static string SaveExcelFile()
        {
            FolderBrowserDialog fbd = new FolderBrowserDialog();
            string excelSavePath = "";
            if (fbd.ShowDialog() == DialogResult.OK)
            {
                excelSavePath = fbd.SelectedPath;
            }
            else
            {
                excelSavePath = "";
            }
            return excelSavePath;
        }



        /// <summary>
        /// 结束打开的Excel进程
        /// </summary>
        public static  void KillProgram()
        {
            foreach (Process process in Process.GetProcesses())
            {
                if (process.ProcessName == "EXCEL") //要结束程序的名称
                {
                    process.Kill();
                }
            }
        }

        public static void FileCreate(string path)
        {
            DirectoryInfo dirInfo=new DirectoryInfo(path);
            if (dirInfo.Exists == false)
            {
                dirInfo.Create();
            }
            else
            {
                dirInfo.Delete();
                dirInfo.Create();
            }
        }


        /// <summary>
        /// 将制定的范围单元格excel转换Jpg
        /// </summary>
        /// <param name="excelFilePath">excel文件路径,EX:@"c:\1.xls"</param>
        /// <param name="SaveExcelJPG">图片保存路径,EX:@"c:\test"</param>
        /// <param name="cell1"></param>
        /// <param name="cell2"></param>

        public static void ExcelToImages(string excelFilePath, string SaveExcelJPG,string cell1,string cell2)
        {
            KillProgram();
            FileCreate(SaveExcelJPG);
            EXCEL.Application app = new Microsoft.Office.Interop.Excel.Application();
            object objMis = System.Type.Missing;
            EXCEL.Workbook singleExcel = app.Workbooks.Open(excelFilePath, objMis, objMis, objMis, objMis, objMis, objMis, objMis, objMis, objMis, objMis, objMis, objMis, objMis, objMis);
            try
            { 
                //wsheet.UsedRange.Select();
                for (int i = 1; i <= singleExcel.Worksheets.Count; i++)
                {
                    Application.DoEvents();
                    EXCEL.Worksheet wsheet = (EXCEL.Worksheet)singleExcel.Worksheets[i];
                    object ranobj = DBNull.Value;

                    //设置选择单元格，在复制出来。
                    wsheet.get_Range(cell1, cell2).Copy(ranobj);
                   
                    //全选单元格，全部复制出来。
                    //wsheet.UsedRange.Copy(objMis);
                    IDataObject iData = Clipboard.GetDataObject();
                    Bitmap bits = (Bitmap)iData.GetData(DataFormats.Bitmap);
                    Bitmap myBitmap = new Bitmap(bits.Width, bits.Height);
                    Graphics g = Graphics.FromImage(myBitmap);
                    g.DrawImage(bits, 0, 0);
                    string savepath = SaveExcelJPG + wsheet.Name + ".jpg";
                    myBitmap.Save(savepath, System.Drawing.Imaging.ImageFormat.Jpeg);
                    Clipboard.Clear();
                    myBitmap.Dispose();
                    bits.Dispose();
                }
                MessageBox.Show("转换成功！");
            }
            catch (Exception e)
            {
                MessageBox.Show("转换失败！");
            }
            finally
            {
                KillProgram();
                //singleExcel.Close(objMis, objMis, objMis);
                //app.Quit();
            }
        }




        /// <summary>
        /// 将用户使用过的excel单元格截图保存为jpg
        /// </summary>
        /// <param name="excelFilePath">源excel路径</param>
        /// <param name="SaveExcelJPG">目标图片的路径（不包含图片名）</param>
        /// <returns></returns>
        public static void ExcelToJpg(string excelFilePath, string SaveExcelJPG)
        {
            KillProgram();
            EXCEL.Application app = new Microsoft.Office.Interop.Excel.Application();
            object objMis = Type.Missing;
            EXCEL.Workbook singleExcel = app.Workbooks.Open(excelFilePath, objMis, objMis, objMis, objMis, objMis, objMis, objMis, objMis, objMis, objMis, objMis, objMis, objMis, objMis);
            try
            {
                //wsheet.UsedRange.Select();
                for (int i = 1; i <= singleExcel.Worksheets.Count; i++)
                {
                    EXCEL.Worksheet wsheet = (EXCEL.Worksheet)singleExcel.Worksheets[i];


                    object ranobj = DBNull.Value;

                    //设置选择单元格，在复制出来。
                    //wsheet.get_Range("A1", "AA22").Copy(ranobj);
                    wsheet.UsedRange.Copy(ranobj);

                    //全选单元格，全部复制出来。
                    //wsheet.UsedRange.Copy(objMis);
                    //Clipboard.SetDataObject(objMis);
                    IDataObject iData = Clipboard.GetDataObject();
                    Bitmap bits = (Bitmap)iData.GetData(DataFormats.Bitmap);
                    Bitmap myBitmap = new Bitmap(bits.Width, bits.Height);
                    Graphics g = Graphics.FromImage(myBitmap);
                    g.DrawImage(bits, 0, 0);
                    myBitmap.Save(SaveExcelJPG, System.Drawing.Imaging.ImageFormat.Jpeg);
                    Clipboard.Clear();
                    myBitmap.Dispose();
                    bits.Dispose();
                }
                MessageBox.Show("转换成功！");
            }
            catch (Exception Excel)
            {
                 MessageBox.Show("转换失败！");
            }
            finally
            {
                KillProgram();
                //singleExcel.Close(objMis, objMis, objMis);
                //app.Quit();
            }
        }
    }
}