简单的SQL Server数据库数据读取与数据操作

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;
}