/// <summary>
    /// 使用oledb连接Excel
    /// </summary>
    /// <param name="_fileUrl"></param>
    /// <param name="pageName"></param>
    /// <returns></returns>
    public DataSet ExcelConn(string _fileUrl, string pageName)
    {
        string filePath = _fileUrl;
        OleDbConnection conn = new OleDbConnection("Provider=Microsoft.Jet.OLEDB.4.0;Data Source="
            + filePath + ";Extended Properties=\"Excel 8.0;IMEX=1\"");
        conn.Open();
        OleDbCommand cmd = new OleDbCommand("SELECT   *   FROM   [" + pageName + "$]", conn);
        OleDbDataAdapter da = new OleDbDataAdapter(cmd);
        DataSet ds = new DataSet();
        da.Fill(ds);

        conn.Close();
        return ds;
    }

实例：导入Excel.rar