C#读取Excel（通过OleDb）

通过OleDb连接，读取Excel。

Provider=Microsoft.Jet.OleDb.4.0;" + "data source=" + filenameurl + ";Extended Properties='Excel 8.0; HDR=YES; IMEX=1'

特别注意：

　　Extended Properties='Excel 8.0;HDR=yes;IMEX=1'

　　A：HDR ( HeaDer Row ) 默认值YES。

　　HDR=Yes表示第一行是标题，不做为数据使用；当HDR=NO，则表示第一行不是标题，做为数据来使用。

　　B：IMEX ( IMport EXport mode )

　　IMEX 有三种模式，各自引起的读写行为也不同，容後再述：

　　0 is Export mode

　　1 is Import mode

　　2 is Linked mode (full update capabilities)

　　当IMEX=0 时为“汇出模式”，这个模式开启的 Excel 档案只能用来做“写入”用途。

　　当 IMEX=1 时为“汇入模式”，这个模式开启的 Excel 档案只能用来做“读取”用途。

　
IMEX=1 解决数字与字符混合时,识别不正常的情况。
　　当 IMEX=2 时为“连結模式”，这个模式开启的 Excel 档案可同时支援“读取”与“写入”用途。

　　C：Excel 8.0

　　对于Excel 97以上版本都用Excel 8.0

// 导入收款单数据
protected void Button2_Click(object sender, EventArgs e)
{
try{
string path = "D:\\Work\\核销记录20121116\\";
string[] names = new string[]{
//"天津 期初数据格式（核销记录）.xlsx"
"浙江大区债权数据（核销记录）.xlsx"
};
for (int i = 0; i < names.Length;i++ )
{
readExcel(path, names[i]);
}
// 操作数据库
insertDB();
}
catch (Exception ex)
{
string Script = CommonBLL.getRedirectErrorPageScript("ZJ0000", Server.UrlEncode(Request.RawUrl.ToString()), ex);
Response.Write(Script);
Response.End();
}
}

private void readExcel(string path, string name)
{
object missing = Missing.Value;
Microsoft.Office.Interop.Excel.Application excelApp = new Microsoft.Office.Interop.Excel.Application();
excelApp.Workbooks.Open(path + name, missing, missing, missing, missing, missing, missing, missing, missing, missing, missing, missing, missing, missing, missing);

for (int index = 0; index < excelApp.Workbooks[1].Worksheets.Count; index++)
{
//只导第一个Sheet
if(index > 0){
break;
}
//取得每个Sheet名
Microsoft.Office.Interop.Excel.Worksheet ws = (Microsoft.Office.Interop.Excel.Worksheet)excelApp.Workbooks[1].Worksheets[index + 1];
string sSheetName = ws.Name;

DataSet ds = ExecleDs(path + name, sSheetName);
DataTable dt = ds.Tables["Execl"];

for (int i = 0; i < dt.Rows.Count; i++)
{
if (String.IsNullOrEmpty(dt.Rows[i]["整机机号"].ToString()))
{
continue;
}
//收款单号
iDocumentNo++;
string receiptDocumentNo = "SK" + iDocumentNo;
aList.Add(getInsertReceiptDocument(dt.Rows[i], receiptDocumentNo, name));
}
}
}

private DataSet ExecleDs(string filenameurl,string sheet)
{
OleDbConnection OleCon = new OleDbConnection();
OleDbCommand OleCmd = new OleDbCommand();
OleDbDataAdapter OleDa = new OleDbDataAdapter();
DataSet Myds = new DataSet();
OleCon.ConnectionString = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + filenameurl + ";Extended Properties=Excel 12.0;";
OleCon.Open();
OleCmd.CommandText = "select * from ["+sheet+"$]";
OleCmd.Connection = OleCon;
OleDa.SelectCommand = OleCmd;
OleDa.Fill(Myds, "Execl");
OleCon.Close();
OleCmd.Dispose();
OleDa.Dispose();
OleCon.Dispose();
return Myds;
}

private ReceiptDocumentModel getInsertReceiptDocument(DataRow dr, string receiptDocumentNo, string fileName)
{
ReceiptDocumentModel receiptDocumentModel = new ReceiptDocumentModel();

receiptDocumentModel.Receipt_document_no = receiptDocumentNo;

switch (fileName.Substring(0, 2))
{
case "天津":
receiptDocumentModel.Business_area = "B0002";
break;
case "浙江":
receiptDocumentModel.Business_area = "C0003";
break;
}
receiptDocumentModel.Machine_no = dr["整机机号"].ToString();
receiptDocumentModel.Receipt_status = "DL119001";
receiptDocumentModel.Receipt_amount = CommonBLL.converTextToAmount(dr["核销金额"].ToString());
receiptDocumentModel.Receipt_verificated_amount = 0;
receiptDocumentModel.Receipt_refund_amount = 0;
receiptDocumentModel.Receipt_balance = CommonBLL.converTextToAmount(dr["核销金额"].ToString());
receiptDocumentModel.Receipted_date = DateTime.Parse(dr["核销日期"].ToString()).ToString("yyyy-MM-dd");
receiptDocumentModel.Creater = "admin";
receiptDocumentModel.Last_modify_date = DateTime.Today.ToString("yyyy-MM-dd");
receiptDocumentModel.Remark = dr["销售合同号"].ToString();

return receiptDocumentModel;
}

// 操作数据库
private void insertDB(){
object[] insertObject = new object[aList.Count];
for (int i = 0; i < aList.Count; i++)
{
insertObject[i] = aList[i];
}
// 操作数据库
int result = moneyBLL.updateAccount(insertObject, null);
if (result > 0)
{
ClientScript.RegisterStartupScript(this.GetType(), "myscript", "<script type='text/javascript'>alert('导入成功。');</script> ");
}
else
{
ClientScript.RegisterStartupScript(this.GetType(), "myscript", "<script type='text/javascript'>alert('导入失败。');</script> ");
}
}