Mega Code Archive
Return true if the number of seconds has elapsed since the last check
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// crudwork
// Copyright 2004 by Steve T. Pham (http://www.crudwork.com)
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with This program. If not, see <http://www.gnu.org/licenses/>.
using System;
using System.Collections.Generic;
using System.Text;
namespace crudwork.Utilities
{
/// <summary>
/// Date Utility
/// </summary>
public class DateUtil
{
/// <summary>
/// create new instance with default attributes
/// </summary>
public DateUtil()
{
}
#region HasElapsed method
private DateTime? then = null;
/// <summary>
/// <para>return true if the number of seconds has elapsed since the last check; otherwise return false.</para>
/// <para>Use this method to raise a status report event to the GUI (for example, every 1 second) to prevent
/// clogging the message pump.</para>
/// </summary>
/// <param name="seconds">specify number of seconds to check</param>
/// <returns></returns>
public bool HasElapsed(double seconds)
{
return HasElapsed(seconds, true);
}
/// <summary>
/// <para>return true if the number of seconds has elapsed since the last check; otherwise return false.</para>
/// <para>Use this method to raise a status report event to the GUI (for example, every 1 second) to prevent
/// clogging the message pump.</para>
/// </summary>
/// <param name="seconds">specify number of seconds to check</param>
/// <param name="mark">set true to mark the time if time has elapsed; or set false to do a test only</param>
/// <returns></returns>
public bool HasElapsed(double seconds, bool mark)
{
var now = DateTime.Now;
if (!then.HasValue)
{
then = now;
return false; // return false, because this is the very first check
}
if (then.Value.AddSeconds(seconds) >= now)
return false; // the # of seconds has NOT elapsed...
// yes, it has. mark new time for next check
if (mark)
then = now;
return true;
}
#endregion
}
}
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