服务器读取EXCEL不安装OFFICE如何实现

/// <summary>
/// 连接Excel 读取Excel数据 并返回DataSet数据集合
/// </summary>
/// <param name="filepath">Excel服务器路径</param>
/// <param name="tableName">Excel表名称</param>
/// <returns></returns>
public static System.Data.DataSet ExcelSqlConnection(string filepath, string tableName)
{
//string strCon = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + filepath + ";Extended Properties='Excel 8.0;HDR=YES;IMEX=1'";
string strCon = "Provider=Microsoft.Ace.OleDb.12.0;Data Source=" + filepath + ";Extended Properties='Excel 12.0;HDR=YES;IMEX=1'";
OleDbConnection ExcelConn = new OleDbConnection(strCon);
try
{
string strCom = string.Format("SELECT FROM [Sheet1$]");
ExcelConn.Open();
OleDbDataAdapter myCommand = new OleDbDataAdapter(strCom, ExcelConn);
DataSet ds = new DataSet();
myCommand.Fill(ds, "[" + tableName + "$]");
ExcelConn.Close();
return ds;
}
catch
{
ExcelConn.Close();
return null;
}
}