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(shù)據(jù)填充到數(shù)據(jù)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(chuàng)建Excel文件：C:/test.xls
cn.Open();
//創(chuàng)建TestSheet工作表
cmd.ExecuteNonQuery();
//添加數(shù)據(jù)
cmd.CommandText = "INSERT INTO TestSheet VALUES(1,'elmer','password')";
cmd.ExecuteNonQuery();
//關(guān)閉連接
cn.Close();