简单的SQL Server数据库数据读取与数据操作

2022-07-15 80酷酷网 80kuku.com

　　server|数据|数据库

简单实用的数据读取，数据操作方法，贴到程序里面直接调用

读取方法：

public DataSet Query(string SQLText)
  {
   SqlConnection myConnection=new SqlConnection(ConfigurationSettings.AppSettings["conn"]);
   DataSet ds = new DataSet();
   SqlDataAdapter myCommand = new SqlDataAdapter(SQLText,myConnection);
   myCommand.Fill(ds);
   return ds;
  }

操作方法：

//执行查询,返回SqlDataReader
  public SqlDataReader QueryByReader(string sqlstr)
  {
   if (sqlstr==String.Empty)
    return null;

   SqlConnection myConnection = new SqlConnection(ConfigurationSettings.AppSettings["connstring"]);
   SqlCommand myCommand = new SqlCommand(sqlstr, myConnection);

   myConnection.Open();
   SqlDataReader result = myCommand.ExecuteReader(CommandBehavior.CloseConnection);

   return result;
  }

  //操作数据库,不返回结果
  public bool OperateDB(string sqlstr)
  {
   if (sqlstr==String.Empty)
    return false;

SqlConnection myConnection = new SqlConnection(ConfigurationSettings.AppSettings["connstring"]);
SqlCommand myCommand = new SqlCommand(sqlstr, myConnection);

   myConnection.Open();
   myCommand.ExecuteNonQuery();
   myConnection.Close();

return true;
}