using System.Data.OleDb;using System.Data;String sConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0;" +"Data Source=c:/test.xls;" +"Extended Properties=Excel 8.0;";OleDbConnection objConn = new OleDbConnection(sConnectionString);objConn.Open();OleDbCommand objCmdSelect =new OleDbCommand("SELECT * FROM [sheet1]", objConn);OleDbDataAdapter objAdapter1 = new OleDbDataAdapter();objAdapter1.SelectCommand = objCmdSelect;DataSet objDataset1 = new DataSet();//將Excel中數據填充到數據集objAdapter1.Fill(objDataset1, "XLData");objConn.Close();

String sConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0;" +"Data Source=c:/test.xls;" +"Extended Properties=Excel 8.0;";OleDbConnection cn = new OleDbConnection(sConnectionString);cn.Open();DataTable tb = cn.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, null);foreach (DataRow row in tb.Rows){//遍歷彈出各Sheet的名稱MessageBox.Show(row["TABLE_NAME"]);}

String sConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0;" +"Data Source=c:/test.xls;" +"Extended Properties=Excel 8.0;";OleDbConnection cn = new OleDbConnection(sConnectionString);string sqlCreate = "CREATE TABLE TestSheet ([ID] INTEGER,[Username] VarChar,[UserPwd] VarChar)";OleDbCommand cmd = new OleDbCommand(sqlCreate, cn);//創建Excel文件：C:/test.xlscn.Open();//創建TestSheet工作表cmd.ExecuteNonQuery();//添加數據cmd.CommandText = "INSERT INTO TestSheet VALUES(1,'elmer','password')";cmd.ExecuteNonQuery();//關閉連接cn.Close();