解决方法of未在本地计算机上注册“Microsoft.Jet.OLEDB.4.0”提供程序

public static DataSet LoadDataFromExcel(string filePath, string[] sheetNames){    string strConn;    //  strConn = " PRovider = Microsoft.Jet.OLEDB.4.0 ; Data Source = " + filePath + ";Extended Properties=Excel 8.0";      //strConn = @"Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + filePath + ";Extended Properties=/"Excel 12.0 xml;HDR=No/"";  //这是2010的链接字符串，不同版本链接不同    strConn = @"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=" + filePath + ";Extended Properties='Excel 8.0;HDR=Yes;IMEX=1;'";    OleDbConnection OleConn = new OleDbConnection(strConn);    OleConn.Open();    DataSet OleDsExcle = new DataSet();    foreach (string name in sheetNames)    {        string sql = "SELECT * FROM [" + name + "$]";        OleDbDataAdapter OleDaExcel = new OleDbDataAdapter(sql, OleConn);        OleDaExcel.Fill(OleDsExcle, name);    }    OleConn.Close();    return OleDsExcle;}