如何在不使用Microsoft.Office.Interop.Excel库的情况下在C＃中读取Excel文件

var fileName = @"C:ExcelFile.xlsx";var connectionString = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + fileName + ";Extended Properties="Excel 12.0;IMEX=1;HDR=NO;TypeGuessRows=0;importMixedTypes=Text""; ;using (var conn = new OleDbConnection(connectionString)){    conn.Open();    var sheets = conn.GetOleDbSchemaTable(System.Data.OleDb.OleDbSchemaGuid.Tables, new object[] { null, null, null, "TABLE" });    using (var cmd = conn.CreateCommand())    {        cmd.CommandText = "SELECt * FROM [" + sheets.Rows[0]["TABLE_NAME"].ToString() + "] ";        var adapter = new OleDbDataAdapter(cmd);        var ds = new DataSet();        adapter.Fill(ds);    }}