using System.Data.OleDb;
using System.IO;
using System.Diagnostics;

string ExcelFile = "C:\\phone.xls";
// EXCEL 文件是不是存在，yes 就Del 了它
if (File.Exists(ExcelFile))
{
    File.Delete(ExcelFile);
}
string Table1 = "Sheet1";
string MySql = "";
//下面是表的描术
string SqlDetial = "第一 char(255),第二 char(255)," +
     "第三 char(255),第四 char(255)," +
      "第五 char(255),第六 char(255)";
//这是个 创建 Excel 表的字符串 
MySql = "create table " + Table1 + "(" + SqlDetial + ")";
//
//下面是连接字串
string connectionString = "Provider=Microsoft.Jet.OLEDB.4.0;";
connectionString += " Data Source=" + ExcelFile + ";";
connectionString += "Excel 8.0;HDR = Yes";
using (OleDbConnection ExcelConnection = new OleDbConnection(connectionString))
{
    ExcelConnection.Open();
    using(OleDbCommand comm = new OleDbCommand(MySql,ExcelConnection)){
        comm.ExecuteNonQuery();
        ExcelConnection.Close();
        Process.Start(ExcelFile);
    }
}