EXCEL導入DATASET的代碼我就寫在下面吧，可以幫助一下新手~

public void ExcelToDS(string Path)
        {
           
            string strConn = "Provider=Microsoft.Jet.OLEDB.4.0;" + "Data Source=" + Path + ";" + "Extended Properties=Excel 8.0;";
            OleDbConnection myConn = new OleDbConnection(strConn);
            myConn.Open();
            string strCom = "SELECT * FROM [Sheet1$]";
            OleDbDataAdapter myCommand = new OleDbDataAdapter(strCom, myConn);
            myDataSet = new DataSet();
            myCommand.Fill(myDataSet, "[Sheet1$]");
            myConn.Close();

            dataGridView1.DataMember = "[Sheet1$]";
            dataGridView1.DataSource = myDataSet;

        }