读取EXCEL的办法

private void button9_Click(object sender, EventArgs e)
{
var folder =new FolderBrowserDialog();
if (folder.ShowDialog() == DialogResult.OK)
{
GetAllDirList(folder.SelectedPath);

var SixCount = 0;
var SevenCount = 0;
var sixsb = new StringBuilder();
var sevensb = new StringBuilder();

for (var i = 0; i < fl.Count; i++)
{
var six = false;
var seven = false;

var fi = (FileInfo)fl[i];
var dataTable = ReadExcel(fi.FullName);

for (var k = 0; k < dataTable.Rows.Count; k++)
{
if (dataTable.Columns.Count == 6)
{
var a0 = dataTable.Rows[k][0].ToString();
var a1 = dataTable.Rows[k][1].ToString();
var a2 = dataTable.Rows[k][2].ToString();
var a3 = dataTable.Rows[k][3].ToString();
var a4 = dataTable.Rows[k][4].ToString();
var a5 = dataTable.Rows[k][5].ToString();

if ((a0 == "") || (a1 == "") || (a2 == "") || (a3 == "") || (a4 == "") || (a5 == ""))
{
continue;
}
six = true;
sixsb.Append(dataTable.Columns[0].ColumnName + "  " + dataTable.Columns[1].ColumnName + "  " + dataTable.Columns[2].ColumnName + "  " + dataTable.Columns[3].ColumnName + "  " + dataTable.Columns[4].ColumnName + "  " + dataTable.Columns[5].ColumnName);
sixsb.Append("\r\n");
sixsb.Append(a0 + "  " + a1 + "  " + a2 + "  " + a3 + "  " + a4 + "  " + a5);
sixsb.Append("\r\n");
}

if (dataTable.Columns.Count == 7)
{
var a0 = dataTable.Rows[k][0].ToString();
var a1 = dataTable.Rows[k][1].ToString();
var a2 = dataTable.Rows[k][2].ToString();
var a3 = dataTable.Rows[k][3].ToString();
var a4 = dataTable.Rows[k][4].ToString();
var a5 = dataTable.Rows[k][5].ToString();
var a6 = dataTable.Rows[k][6].ToString();

if ((a0 == "") || (a1 == "") || (a2 == "") || (a3 == "") || (a4 == "") || (a5 == "") || (a6 == ""))
{
continue;
}
seven = true;

sevensb.Append(dataTable.Columns[0].ColumnName + "  " + dataTable.Columns[1].ColumnName + "  " + dataTable.Columns[2].ColumnName + "  " + dataTable.Columns[3].ColumnName + "  " + dataTable.Columns[4].ColumnName + "  " + dataTable.Columns[5].ColumnName + "  " + dataTable.Columns[6].ColumnName);
sixsb.Append("\r\n");
sevensb.Append(a0 + "  " + a1 + "  " + a2 + "  " + a3 + "  " + a4 + "  " + a5 + "  " + a6);
sevensb.Append("\r\n");
}
}
if (six) SixCount++;
if (seven) SevenCount++;

Program.MyFrm.SetTextMessage("SixCount:" + SixCount);
Program.MyFrm.SetTextMessage("SevenCount:" + SevenCount);

Program.MyFrm.SetTextMessage("========以下为六个字段的信息======================================");
Program.MyFrm.SetTextMessage(sixsb.ToString());

Program.MyFrm.SetTextMessage("========以下为七个字段的信息======================================");
Program.MyFrm.SetTextMessage(sevensb.ToString());
}
}
}
private static DataTable ReadExcel(string strFileName)
{
var book = new Workbook(strFileName);
var sheet = book.Worksheets[0];
var cells = sheet.Cells;

return cells.ExportDataTableAsString(0, 0, cells.MaxDataRow + 1, cells.MaxDataColumn + 1, true);
}
private static ArrayList fl = new ArrayList();
//我把ArrayList当成动态数组用，非常好用
private static void GetAllDirList(string strBaseDir)
{
fl.Clear();

var di = new DirectoryInfo(strBaseDir);
var diA = di.GetDirectories();
var fiA = di.GetFiles();//获得了所有起始目录下的文件

for (var i = 0; i < fiA.Length; i++)
{
fl.Add(fiA[i]);
}
for (var i = 0; i < diA.Length; i++)

{
GetAllDirList(diA[i].FullName);
}
}