/// <summary>
 /// 把分钟数转化成几小时几分钟(100 -> 01:40)
 /// </summary>
 /// <param name="minutes">待转化的分钟数</param>
 /// <returns>几小时几分钟</returns>
 string ConvertToTime(object minutes)
 {
     int M = 0;//待转化的分钟数;
     int h = 0;//小时
     int m = 0;//分钟    try
     {
         if (minutes.ToString() != "")
         {
             M = Convert.ToInt32(minutes);
         }
     }
     catch (Exception ex)
     {
         MessageBox.Show(ex.Message);
     }    h = M / 60;
     m = M % 60;    DateTime time = DateTime.Parse("00:00");
     time = time.AddHours(h).AddMinutes(m);    string R = time.ToString("HH:mm");
     if (R == "00:00")
     {
         R = ""; ;
     }
     return R;}

 

/// <summary>
/// 把分钟数转化成几小时几分钟(100 -> 01:40)
/// </summary>
/// <param name="minutes">待转化的分钟数</param>
/// <returns>几小时几分钟</returns>
string ConvertToTime(object minutes)
{
    int M = 0;//待转化的分钟数;
    int h = 0;//小时
    int m = 0;//分钟

    try
    {
        if (minutes.ToString() != "")
        {
            M = Convert.ToInt32(minutes);
        }
    }
    catch (Exception ex)
    {
        MessageBox.Show(ex.Message);
    }

    h = M / 60;
    m = M % 60;

    DateTime time = DateTime.Parse("00:00");
    time = time.AddHours(h).AddMinutes(m);

    string R = time.ToString("HH:mm");
    if (R == "00:00")
    {
        R = ""; ;
    }
    return R;

}