ASP.NET & Csharp (C#)

ASP.NET & Csharp (C#) , Here you can find my posts about .NET c# .

Get Day Of Week

Posted on by coder 
   
 

//Octavalent Extension Methods
//http://sdfasdf.codeplex.com/
//Library of extension methods for .Net create by Octavalent (www.octavalent.nl)
using System;

    public static class DateTimeExtensions
    {

        public static int GetDayOfWeek(this DateTime dt)
        {
            if (dt.DayOfWeek == DayOfWeek.Monday) return 1;
            if (dt.DayOfWeek == DayOfWeek.Tuesday) return 2;
            if (dt.DayOfWeek == DayOfWeek.Wednesday) return 3;
            if (dt.DayOfWeek == DayOfWeek.Thursday) return 4;
            if (dt.DayOfWeek == DayOfWeek.Friday) return 5;
            if (dt.DayOfWeek == DayOfWeek.Saturday) return 6;
            if (dt.DayOfWeek == DayOfWeek.Sunday) return 7;
            return 0;
        }
   }

Add Business Days

Posted on by coder

//Octavalent Extension Methods
//http://sdfasdf.codeplex.com/
//Library of extension methods for .Net create by Octavalent (www.octavalent.nl)
using System;

public static class DateTimeExtensions
{

public static DateTime AddBusinessDays(this DateTime date, int days)
{
int sign = Math.Sign(days);
int unsignedDays = Math.Abs(days);
for (int i = 0; i < unsignedDays; i++) { do { date = date.AddDays(sign); } while (date.DayOfWeek == DayOfWeek.Saturday || date.DayOfWeek == DayOfWeek.Sunday); } return date; } } [/csharp]

Return true if the number of seconds has elapsed since the last check

Posted on by coder 
   
 

// 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
  }
}

Return the previous or next business day of the date specified.

Posted on by coder 
   
 

// 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>
    /// Return the previous or next business day of the date specified.
    /// </summary>
    /// <param name="today"></param>
    /// <param name="addValue"></param>
    /// <returns></returns>
    public static DateTime GetBusinessDay(DateTime today, int addValue)
    {
      #region Sanity Checks
      if ((addValue != -1) &amp;&amp; (addValue != 1))
        throw new ArgumentOutOfRangeException("addValue must be -1 or 1");
      #endregion

      if (addValue > 0)
        return NextBusinessDay(today);
      else
        return DateUtil.PreviousBusinessDay(today);
    }

    /// <summary>
    /// return the previous business date of the date specified.
    /// </summary>
    /// <param name="today"></param>
    /// <returns></returns>
    public static DateTime PreviousBusinessDay(DateTime today)
    {
      DateTime result;
      switch (today.DayOfWeek)
      {
        case DayOfWeek.Sunday:
          result = today.AddDays(-2);
          break;

        case DayOfWeek.Monday:
          result = today.AddDays(-3);
          break;

        case DayOfWeek.Tuesday:
        case DayOfWeek.Wednesday:
        case DayOfWeek.Thursday:
        case DayOfWeek.Friday:
          result = today.AddDays(-1);
          break;

        case DayOfWeek.Saturday:
          result = today.AddDays(-1);
          break;

        default:
          throw new ArgumentOutOfRangeException("DayOfWeek=" + today.DayOfWeek);
      }
      return ScreenHolidays(result, -1);
    }

    /// <summary>
    /// return the next business date of the date specified.
    /// </summary>
    /// <param name="today"></param>
    /// <returns></returns>
    public static DateTime NextBusinessDay(DateTime today)
    {
      DateTime result;
      switch (today.DayOfWeek)
      {
        case DayOfWeek.Sunday:
        case DayOfWeek.Monday:
        case DayOfWeek.Tuesday:
        case DayOfWeek.Wednesday:
        case DayOfWeek.Thursday:
          result = today.AddDays(1);
          break;

        case DayOfWeek.Friday:
          result = today.AddDays(3);
          break;

        case DayOfWeek.Saturday:
          result = today.AddDays(2);
          break;

        default:
          throw new ArgumentOutOfRangeException("DayOfWeek=" + today.DayOfWeek);
      }
      return ScreenHolidays(result, 1);
    }


    /// <summary>
    /// return the mm/dd string of the date specified.
    /// </summary>
    /// <param name="time"></param>
    /// <returns></returns>
    public static string MonthDay(DateTime time)
    {
      return String.Format("{0:00}/{1:00}", time.Month, time.Day);
    }


    /// <summary>
    /// screen for holidays 
    /// (simple mode)
    /// </summary>
    /// <param name="result"></param>
    /// <param name="addValue"></param>
    /// <returns></returns>
    public static DateTime ScreenHolidays(DateTime result, int addValue)
    {
      #region Sanity Checks
      if ((addValue != -1) &amp;&amp; (addValue != 1))
        throw new ArgumentOutOfRangeException("addValue must be -1 or 1");
      #endregion

      // holidays on fixed date
      switch (MonthDay(result))
      {
        case "01/01":  // Happy New Year
        case "07/04":  // Independent Day
        case "12/25":  // Christmas
          return GetBusinessDay(result, addValue);
        default:
          return result;
      }
    }
    }
}

Return the previous business date of the date specified.

Posted on by coder 
   
 
// 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>
    /// return the previous business date of the date specified.
    /// </summary>
    /// <param name="today"></param>
    /// <returns></returns>
    public static DateTime PreviousBusinessDay(DateTime today)
    {
      DateTime result;
      switch (today.DayOfWeek)
      {
        case DayOfWeek.Sunday:
          result = today.AddDays(-2);
          break;

        case DayOfWeek.Monday:
          result = today.AddDays(-3);
          break;

        case DayOfWeek.Tuesday:
        case DayOfWeek.Wednesday:
        case DayOfWeek.Thursday:
        case DayOfWeek.Friday:
          result = today.AddDays(-1);
          break;

        case DayOfWeek.Saturday:
          result = today.AddDays(-1);
          break;

        default:
          throw new ArgumentOutOfRangeException("DayOfWeek=" + today.DayOfWeek);
      }
      return ScreenHolidays(result, -1);
    }
    /// <summary>
    /// Return the previous or next business day of the date specified.
    /// </summary>
    /// <param name="today"></param>
    /// <param name="addValue"></param>
    /// <returns></returns>
    public static DateTime GetBusinessDay(DateTime today, int addValue)
    {
      #region Sanity Checks
      if ((addValue != -1) &amp;&amp; (addValue != 1))
        throw new ArgumentOutOfRangeException("addValue must be -1 or 1");
      #endregion

      if (addValue > 0)
        return NextBusinessDay(today);
      else
        return DateUtil.PreviousBusinessDay(today);
    }



    /// <summary>
    /// return the next business date of the date specified.
    /// </summary>
    /// <param name="today"></param>
    /// <returns></returns>
    public static DateTime NextBusinessDay(DateTime today)
    {
      DateTime result;
      switch (today.DayOfWeek)
      {
        case DayOfWeek.Sunday:
        case DayOfWeek.Monday:
        case DayOfWeek.Tuesday:
        case DayOfWeek.Wednesday:
        case DayOfWeek.Thursday:
          result = today.AddDays(1);
          break;

        case DayOfWeek.Friday:
          result = today.AddDays(3);
          break;

        case DayOfWeek.Saturday:
          result = today.AddDays(2);
          break;

        default:
          throw new ArgumentOutOfRangeException("DayOfWeek=" + today.DayOfWeek);
      }
      return ScreenHolidays(result, 1);
    }


    /// <summary>
    /// return the mm/dd string of the date specified.
    /// </summary>
    /// <param name="time"></param>
    /// <returns></returns>
    public static string MonthDay(DateTime time)
    {
      return String.Format("{0:00}/{1:00}", time.Month, time.Day);
    }

    /// <summary>
    /// screen for holidays 
    /// (simple mode)
    /// </summary>
    /// <param name="result"></param>
    /// <param name="addValue"></param>
    /// <returns></returns>
    public static DateTime ScreenHolidays(DateTime result, int addValue)
    {
      #region Sanity Checks
      if ((addValue != -1) &amp;&amp; (addValue != 1))
        throw new ArgumentOutOfRangeException("addValue must be -1 or 1");
      #endregion

      // holidays on fixed date
      switch (MonthDay(result))
      {
        case "01/01":  // Happy New Year
        case "07/04":  // Independent Day
        case "12/25":  // Christmas
          return GetBusinessDay(result, addValue);
        default:
          return result;
      }
    }    
    }
}

Screen for holidays

Posted on by coder 
   
 
// 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>
    /// screen for holidays 
    /// (simple mode)
    /// </summary>
    /// <param name="result"></param>
    /// <param name="addValue"></param>
    /// <returns></returns>
    public static DateTime ScreenHolidays(DateTime result, int addValue)
    {
      #region Sanity Checks
      if ((addValue != -1) &amp;&amp; (addValue != 1))
        throw new ArgumentOutOfRangeException("addValue must be -1 or 1");
      #endregion

      // holidays on fixed date
      switch (MonthDay(result))
      {
        case "01/01":  // Happy New Year
        case "07/04":  // Independent Day
        case "12/25":  // Christmas
          return GetBusinessDay(result, addValue);
        default:
          return result;
      }
    }
    /// <summary>
    /// return the previous business date of the date specified.
    /// </summary>
    /// <param name="today"></param>
    /// <returns></returns>
    public static DateTime PreviousBusinessDay(DateTime today)
    {
      DateTime result;
      switch (today.DayOfWeek)
      {
        case DayOfWeek.Sunday:
          result = today.AddDays(-2);
          break;

        case DayOfWeek.Monday:
          result = today.AddDays(-3);
          break;

        case DayOfWeek.Tuesday:
        case DayOfWeek.Wednesday:
        case DayOfWeek.Thursday:
        case DayOfWeek.Friday:
          result = today.AddDays(-1);
          break;

        case DayOfWeek.Saturday:
          result = today.AddDays(-1);
          break;

        default:
          throw new ArgumentOutOfRangeException("DayOfWeek=" + today.DayOfWeek);
      }
      return ScreenHolidays(result, -1);
    }
    /// <summary>
    /// Return the previous or next business day of the date specified.
    /// </summary>
    /// <param name="today"></param>
    /// <param name="addValue"></param>
    /// <returns></returns>
    public static DateTime GetBusinessDay(DateTime today, int addValue)
    {
      #region Sanity Checks
      if ((addValue != -1) &amp;&amp; (addValue != 1))
        throw new ArgumentOutOfRangeException("addValue must be -1 or 1");
      #endregion

      if (addValue > 0)
        return NextBusinessDay(today);
      else
        return DateUtil.PreviousBusinessDay(today);
    }



    /// <summary>
    /// return the next business date of the date specified.
    /// </summary>
    /// <param name="today"></param>
    /// <returns></returns>
    public static DateTime NextBusinessDay(DateTime today)
    {
      DateTime result;
      switch (today.DayOfWeek)
      {
        case DayOfWeek.Sunday:
        case DayOfWeek.Monday:
        case DayOfWeek.Tuesday:
        case DayOfWeek.Wednesday:
        case DayOfWeek.Thursday:
          result = today.AddDays(1);
          break;

        case DayOfWeek.Friday:
          result = today.AddDays(3);
          break;

        case DayOfWeek.Saturday:
          result = today.AddDays(2);
          break;

        default:
          throw new ArgumentOutOfRangeException("DayOfWeek=" + today.DayOfWeek);
      }
      return ScreenHolidays(result, 1);
    }


    /// <summary>
    /// return the mm/dd string of the date specified.
    /// </summary>
    /// <param name="time"></param>
    /// <returns></returns>
    public static string MonthDay(DateTime time)
    {
      return String.Format("{0:00}/{1:00}", time.Month, time.Day);
    }
   }
}

Return a elapsed time in formatted string. (hh:mm:ss:mi)

Posted on by coder 
   
 

// 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>
    /// return a elapsed time in formatted string. (hh:mm:ss:mi)
    /// </summary>
    /// <param name="ticks"></param>
    /// <returns></returns>
    public static string ElapsedTime(long ticks)
    {
      TimeSpan ts = new TimeSpan(ticks);

      return String.Format("{0}:{1}:{2}:{3}",
        ts.Hours,
        ts.Minutes,
        ts.Seconds,
        ts.Milliseconds
      );
    }

    /// <summary>
    /// return a elapsed time in formatted string. (hh:mm:ss:mi)
    /// </summary>
    /// <param name="t1"></param>
    /// <returns></returns>
    public static string ElapsedTime(DateTime t1)
    {
      return ElapsedTime(t1, DateTime.Now);
    }

    /// <summary>
    /// return a elapsed time in formatted string. (hh:mm:ss:mi)
    /// </summary>
    /// <param name="t1"></param>
    /// <param name="t2"></param>
    /// <returns></returns>
    public static string ElapsedTime(DateTime t1, DateTime t2)
    {
      if (t2 > t1)
        return ElapsedTime(t2.Ticks - t1.Ticks);
      else
        return ElapsedTime(t1.Ticks - t2.Ticks);
    }
   }
}