private string exclePath = @"E:\111.xls";
private int StartRow = 2;    //读的起始行
private void button1_Click(object sender, System.EventArgs e)
{
    Excel.Application excel = new Excel.Application();//引用Excel对象
    Excel.Workbook workbook = excel.Workbooks.Add(exclePath);
    excel.UserControl = true;
    System.Text.StringBuilder sb = new System.Text.StringBuilder();
    excel.Visible = false;
for (int i = 0; i < workbook.Worksheets.Count; i++)//循环取所有的Sheet.
    {
        Excel.Worksheet sheet = workbook.Worksheets.get_Item(i + 1) as Excel.Worksheet;//从１开始.
        for (int row = StartRow; row <= sheet.UsedRange.Rows.Count; row++)
        {
//取单元格值；
            for (int col = 1; col <= sheet.UsedRange.Columns.Count; col++)
            {
                Excel.Range range =sheet.Cells[row, col] as Excel.Range;
                sb.Append("," + col.ToString() + ":" + range.Text);
            }
            sb.Append(System.Environment.NewLine);
//取存图片；
            if(sheet.Shapes.Count > row - StartRow )
            {
                Excel.Shape s = sheet.Shapes.Item(row - StartRow + 1) as Excel.Shape;
                s.CopyPicture(Appearance.Button, Excel.XlCopyPictureFormat.xlBitmap);　//COPY到内存。
                IDataObject iData = Clipboard.GetDataObject();
if (iData.GetDataPresent(DataFormats.Bitmap))
                {
                    pictureBox1.Image = (Bitmap)iData.GetData(DataFormats.Bitmap);    //从内存取值；
                    pictureBox1.Image.Save(string.Format(@"D:\{0}.jpg", row));        //保存。
                }
else
                {
                    pictureBox1.Image = null;
                }
            }
        }
            }
    workbook.Close(false,null,null);
    excel.Quit();
}