/*******************************
 * 功能：数据库操作相关
 * 作者：FlashICP
 * 时间：2005-7-22
 * ******************************/
using System;
using System.Data;
using System.Data.SqlClient;
using System.Web;
namespace moban
{
 public class data
 {
  protected static string con="server=[yourserver];database=[yourdata];user id=[your id];password=[youpassword]";
  //数据库字符串
  protected System.Data.SqlClient.SqlConnection DataConnection;
  //数据库连接对象
  protected System.Data.SqlClient.SqlDataAdapter DataAdapter;
  //SqlDataAdapter对象
  protected System.Data.SqlClient.SqlCommand DataCommand;
  //SqlCommand对象
  protected System.Data.SqlClient.SqlCommandBuilder DataComBuilder;
  //SqlCommandBuilder对象
  protected System.Data.DataSet DataSet;
  //DataSet对象
  protected System.Data.DataRow DataRow;
  //DataRow对象
  protected System.Data.SqlClient.SqlDataReader DataReader=null;
  //构造函数
  public data()
  {
DataConnection=DataConn();

  }
  //连接数据库参数
  public string Con
  {

get{return con;}
set{con= value;}

  }
  //数据库连接参数
  public SqlConnection DataConn()
  {
DataConnection=new SqlConnection(Con); 
return DataConnection;

  }
  //返回数据库连接对象
  public SqlDataReader DataQuery(string Sql)
  {
Sql=Sql.Replace("--","");
Sql=Sql.Replace(";","");
DataConnection=DataConn();
DataConnection.Open();
DataReader=null;
DataCommand=new SqlCommand(Sql,DataConnection);
DataReader=DataCommand.ExecuteReader();
DataCommand.Dispose();
return DataReader;
  }
  //返回DataSet
  public virtual DataSet DataSetQuery(string Sql,string TableName)
  {
DataConnection=DataConn();
DataAdapter=new SqlDataAdapter(Sql,DataConnection);
DataSet=new DataSet();
DataAdapter.Fill(DataSet,TableName);
DataAdapter.Dispose();
DataConnection.Close();
DataConnection.Dispose();
return DataSet;
  }
  //返回DataSet
  public DataSet DataSetQuery(DataSet myds,string TableName,string Sql)
  {
DataConnection=DataConn();
DataAdapter=new SqlDataAdapter(Sql,DataConnection);
DataAdapter.Fill(myds,TableName);
DataConnection.Close();
DataConnection.Dispose();
return DataSet;

}
  //返回DataSet
  public DataSet DataSetQuery(string Sql,string TableName,int StarIndex,int Count)
  {
DataConnection=DataConn();
DataConnection.Open();
DataAdapter=new SqlDataAdapter(Sql,DataConnection);
DataSet=new DataSet();
DataAdapter.Fill(DataSet,StarIndex,Count,TableName);
DataConnection.Close();
DataConnection.Dispose();
return DataSet;
  }
  public void DataDo(string sqlstr)
  {  
DataConnection=DataConn();
SqlCommand mycom=DataConnection.CreateCommand();
mycom.CommandText=sqlstr;
DataConnection.Open();
mycom.ExecuteNonQuery();
DataConnection.Close();
  }
  //返回DataSet 开始行到结束行
  public bool EditData(string Sql)
  {
DataConnection=DataConn();
DataConnection.Open();
DataCommand=new SqlCommand(Sql,DataConnection);
try
{
 DataCommand.ExecuteNonQuery();
 DataConnection.Close();
 return true;
}
catch(Exception ex)
{ 
 System.Console.Write(ex.Message.ToString());
 DataConnection.Close();
 return false;
}
  }
  //执行成功返回真,否则返回假．
  public object ExecuteScalar(string Sql)
  {
DataConnection=DataConn();
DataConnection.Open();
DataCommand=new SqlCommand(Sql,DataConnection);
try
{
 object back = DataCommand.ExecuteScalar();
 DataConnection.Close();
 return back;
}
catch(Exception ex)
{ 
 System.Console.Write(ex.Message.ToString());
 DataConnection.Close();
 return null;
}
  }
  //返回一个值的查询语句
  public DataSet EditData(DataSet DataSet,SqlDataAdapter myda,string TableName)
  {
 

DataComBuilder=new SqlCommandBuilder(myda);
myda.UpdateCommand=DataComBuilder.GetUpdateCommand();
myda.DeleteCommand=DataComBuilder.GetDeleteCommand();
myda.InsertCommand=DataComBuilder.GetInsertCommand();
myda.Update(DataSet,TableName);
DataSet.AcceptChanges();
this.CloseConnection();
return DataSet;
  }
  //修改DataSet 并且修改数据库值存储过程
  public bool DataProcedure(string ProcedureName)
  {
DataConnection=DataConn();
DataConnection.Open();
DataCommand=new SqlCommand();
DataCommand.CommandText=ProcedureName;
DataCommand.Connection=DataConnection;

  
DataCommand.CommandType=System.Data.CommandType.StoredProcedure;
try
{
 DataCommand.ExecuteNonQuery();
 return true;
}
catch(Exception ex)
{ 
 System.Console.Write(ex.Message.ToString());
 return false;
}
  }
  
  //无参数存储过程的执行　返回执行真假
  public void CloseConnection()
  {
if(DataReader!=null)
{
 DataReader.Close();
 DataReader=null;

}
DataConnection.Close();
DataConnection.Dispose();
  }
  //关闭连接
 

}
}