asp.net将EXCEL导入到SQL数据库

public void Button1_Click(object sender, System.EventArgs e)
    {

string mystring="Provider = Microsoft.Jet.OLEDB.4.0 ; Data Source = 'e:/SIGN.xls';Extended Properties=Excel 8.0";
OleDbConnection cnnxls = new OleDbConnection (mystring);
OleDbDataAdapter myDa =new OleDbDataAdapter("select * from [Sheet1$]",cnnxls);
DataSet myDs =new DataSet();
myDa.Fill(myDs);

if(myDs.Tables[0].Rows.Count > 0)
{
string strSql = "";
string CnnString="Provider=SQLOLEDB;database=zhddclxt;server=(local);uid=sa;pwd=sa";
OleDbConnection conn =new OleDbConnection(CnnString);
conn.Open ();
OleDbCommand myCmd =null;

for(int i=0; i<myDs.Tables[0].Rows.Count; i++)
{
    strSql = "insert into qsorder(OrderDetailCode,OrderCode) values ('";
strSql += myDs.Tables[0].Rows[i].ItemArray[1].ToString() + "', '";
strSql += myDs.Tables[0].Rows[i].ItemArray[2].ToString() + "')";

try
{
myCmd=new OleDbCommand(strSql,conn);
myCmd.ExecuteNonQuery();
Label8.Text = "<script language=javascript>alert('数据导入成功.');</script>";
}
catch
{
Label8.Text = "<script language=javascript>alert('数据导入失败.');</script>";
}
}
conn.Close();
}

}