private void button2_Click(object sender, EventArgs e)
{
InventoryModels.SimulationSystem simsys = new InventoryModels.SimulationSystem();
LeadTimeDis = new List <Distribution>();
demandDis = new List <Distribution>();
Read_Demand_Distribution();
Read_Lead_time_Distribution();
Helper.Calc_Ranges(LeadTimeDis);
Helper.Calc_Ranges(demandDis);
simsys.DemandDistribution = demandDis;
simsys.LeadDaysDistribution = LeadTimeDis;
// MessageBox.Show(LeadTimeDis.Count.ToString());
simsys.NumberOfDays = Int32.Parse(NumberOfDays.Text.ToString());
simsys.OrderUpTo = Int32.Parse(theOrderLevel.Text.ToString());
simsys.ReviewPeriod = Int32.Parse(TheReviewPeriod.Text.ToString());
simsys.StartOrderQuantity = Int32.Parse(FirstOrderQuantity.Text.ToString());
simsys.StartLeadDays = Int32.Parse(FirstOrderarrivesAfter.Text.ToString());
simsys.StartInventoryQuantity = Int32.Parse(BeginningInventoryQuantity.Text.ToString());
List <SimulationCase> simulation = Helper.simulate(simsys);
simsys.SimulationCases = simulation;
simsys.PerformanceMeasures.EndingInventoryAverage = Helper.endingInvenoryAverage(simulation);
simsys.PerformanceMeasures.ShortageQuantityAverage = Helper.shortageQuantityAverage(simulation);
dataGridView3.DataSource = simulation;
string testing = TestingManager.Test(simsys, Constants.FileNames.TestCase1);
MessageBox.Show(testing);
}
public static void ReadInput(string testCase, ref SimulationSystem simulationSystem)
{
string projectPath = System.IO.Directory.GetCurrentDirectory();
projectPath = projectPath.Remove(projectPath.Length - 10);
string[] lines = System.IO.File.ReadAllLines(projectPath + "\\TestCases\\" + testCase + ".txt");
InputData(lines, ref simulationSystem);
}
public Inputs_Read()
{
system = new SimulationSystem();
}
public static void InputData(string[] lines, ref SimulationSystem simulationSystem)
{
int stringType = 0;
char[] delimiters = { ',', ' ' };
foreach (string line in lines)
{
if (line == "\n" || line.Length == 0 || line[0] == ' ')
{
continue;
}
switch (line)
{
case "OrderUpTo":
stringType = 1;
continue;
case "ReviewPeriod":
stringType = 2;
continue;
case "StartInventoryQuantity":
stringType = 3;
continue;
case "StartLeadDays":
stringType = 4;
continue;
case "StartOrderQuantity":
stringType = 5;
continue;
case "NumberOfDays":
stringType = 6;
continue;
case "DemandDistribution":
stringType = 7;
continue;
case "LeadDaysDistribution":
stringType = 8;
continue;
}
switch (stringType)
{
case 1:
simulationSystem.OrderUpTo = int.Parse(line);
break;
case 2:
simulationSystem.ReviewPeriod = int.Parse(line);
break;
case 3:
simulationSystem.StartInventoryQuantity = int.Parse(line);
break;
case 4:
simulationSystem.StartLeadDays = int.Parse(line);
break;
case 5:
simulationSystem.StartOrderQuantity = int.Parse(line);
break;
case 6:
simulationSystem.NumberOfDays = int.Parse(line);
break;
default: {
string[] distributions = line.Split(delimiters);
if (distributions.Length > 2)
{
Distribution distribution = new Distribution();
distribution.Value = int.Parse(distributions[0]);
distribution.Probability = decimal.Parse(distributions[2]);
switch (stringType)
{
case 7:
simulationSystem.DemandDistribution.Add(distribution);
break;
case 8:
simulationSystem.LeadDaysDistribution.Add(distribution);
break;
}
}
break;
}
}
}
}
public Simulator(SimulationSystem sys)
{
mysys = sys;
}
public Simulate(SimulationSystem s)
{
system = s;
}
public static List <SimulationCase> simulate(SimulationSystem simSys)
{
List <SimulationCase> simCase = new List <SimulationCase>();
Random random = new Random();
int beginning = simSys.StartInventoryQuantity;
int leadingday = simSys.StartLeadDays;
int order = simSys.StartOrderQuantity;
int shortage = 0;
List <int> T = new List <int> {
26, 68, 33, 39, 86, 18, 64, 79, 55, 74, 21, 43, 49, 90, 35, 8, 98, 61, 85, 81, 53, 15, 94, 19, 44
};
List <int> R = new List <int> {
0, 0, 0, 0, 8, 0, 0, 0, 0, 7, 0, 0, 0, 0, 2, 0, 0, 0, 0, 3, 0, 0, 0, 0, 1
};
int index = 1;
for (int i = 0; i < simSys.NumberOfDays; ++i)
{
simCase.Add(new SimulationCase());
simCase[i].Day = i + 1;
simCase[i].Cycle = (i / simSys.ReviewPeriod) + 1;
simCase[i].DayWithinCycle = index;
simCase[i].BeginningInventory = simSys.StartOrderQuantity;
simCase[i].BeginningInventory = beginning;
int randomNumber = random.Next(1, 100);
// int randomNumber = T[i];
simCase[i].RandomDemand = randomNumber;
simCase[i].Demand = demandAndLead(randomNumber, simSys.DemandDistribution);
if (simCase[i].BeginningInventory - simCase[i].Demand - shortage > 0)
{
simCase[i].EndingInventory = simCase[i].BeginningInventory - simCase[i].Demand - shortage; shortage = 0;
}
else
{
simCase[i].EndingInventory = 0;
shortage += -1 * (simCase[i].BeginningInventory - simCase[i].Demand);
simCase[i].ShortageQuantity = shortage;
}
if (leadingday == 1)
{
beginning = simCase[i].EndingInventory + order;
}
else
{
beginning = simCase[i].EndingInventory;
}
--leadingday;
if (index == simSys.ReviewPeriod)
{
randomNumber = random.Next(1, 100);
// randomNumber = R[i];
simCase[i].RandomLeadDays = randomNumber;
simCase[i].LeadDays = demandAndLead(randomNumber, simSys.LeadDaysDistribution);
leadingday = simCase[i].LeadDays;
simCase[i].OrderQuantity = (simSys.OrderUpTo) - (simCase[i].EndingInventory) + (shortage);
order = simCase[i].OrderQuantity;
}
++index;
if (index > simSys.ReviewPeriod)
{
index = 1;
}
}
return(simCase);
}
