using System.Data.OleDb;
public static void CreateExcelFile2()
{
  string OLEDBConnStr = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=c://aa2.xls;";  
  OLEDBConnStr +=  " Extended Properties=Excel 8.0;";
  string strCreateTableSQL = @" CREATE TABLE ";
  strCreateTableSQL += @" 测试表 ";
  strCreateTableSQL += @" ( ";
  strCreateTableSQL += @" ID INTEGER, ";
  strCreateTableSQL += @" UserID INTEGER, ";
  strCreateTableSQL += @" UserIP VARCHAR , ";
  strCreateTableSQL += @" PostTime DATETIME , ";
  strCreateTableSQL += @" FromParm VARCHAR ";
  strCreateTableSQL += @" ) ";
  OleDbConnection oConn = new OleDbConnection(); 
  oConn.ConnectionString = OLEDBConnStr; 
  OleDbCommand oCreateComm = new OleDbCommand();
  oCreateComm.Connection = oConn;
  oCreateComm.CommandText = strCreateTableSQL;
  oConn.Open(); 
  oCreateComm.ExecuteNonQuery();
  oConn.Close();
}
using System.Data.OleDb;
public static void CreateExcelFile2()
{
  string OLEDBConnStr = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=c://aa2.xls;";  
  OLEDBConnStr +=  " Extended Properties=Excel 8.0;";
  string strCreateTableSQL = @" CREATE TABLE ";
  strCreateTableSQL += @" 测试表 ";
  strCreateTableSQL += @" ( ";
  strCreateTableSQL += @" ID INTEGER, ";
  strCreateTableSQL += @" UserID INTEGER, ";
  strCreateTableSQL += @" UserIP VARCHAR , ";
  strCreateTableSQL += @" PostTime DATETIME , ";
  strCreateTableSQL += @" FromParm VARCHAR ";
  strCreateTableSQL += @" ) ";
  OleDbConnection oConn = new OleDbConnection(); 
  oConn.ConnectionString = OLEDBConnStr; 
  OleDbCommand oCreateComm = new OleDbCommand();
  oCreateComm.Connection = oConn;
  oCreateComm.CommandText = strCreateTableSQL;
  oConn.Open(); 
  oCreateComm.ExecuteNonQuery();
  oConn.Close();
}