private void SearchRateInFile()//this method will get rate from the data file and store it to a specific global Dictionary.
{
try
{
StreamReader ReadFile = new StreamReader("PersonnelFile.txt");
Waga_Tax Rate_Data = new Waga_Tax();
while (!ReadFile.EndOfStream)
{
string x = ReadFile.ReadLine();
string index = Rate_Data.getIndexFromString(x);
Rate_Data.AddRateToDictionary(index, Rate_Data.GetRateFromString(index, x));
}
ReadFile.Close();
}
catch (Exception e)
{
MessageBox.Show($"Sorry,seems something wrong:{Environment.NewLine}{e}", "Error");
}
}
private void OpenSavedFile()
{
try
{
StreamReader ReadFile = new StreamReader("PersonnelFile.txt");
PersonList list_data = new PersonList();
employee_list.ItemsSource = list_data.getEmptyArray();
//empty the list for new data list
List <string> NewDataList = new List <string>();
//This List is used to store new data come from the data file.
//Do not use Array because we do not know how many data it needs to store.
while (!ReadFile.EndOfStream)
{
string data_string = ReadFile.ReadLine();
NewDataList.Add(data_string);
}
string[] NewData = NewDataList.ToArray();
//convert List to Array, my class method based on Array as a parameter.
Waga_Tax Rate_Data = new Waga_Tax();
//As usual,the rate of every person will be stored into a Dictionary of Waga_Tax Class.
if (list_data.getCountFromDictionary() > 0)
//when the number of the list item is not 0, we need to keep the data which user has already added to list
//and add other existing data which is in the data file to list
{
foreach (string n in list_data.getArrayForList())
// Firstly,Traverse existing data of the list.
//
{
string Index_New = list_data.getIndexFromString(n);
foreach (string o in NewData)
//Secondly, compare existing data with new data which came from the data file.
{
string Index_Old = list_data.getIndexFromString(o);
//analyze and get the index of existing data through its string.
if (Index_New != Index_Old)
//when it is not an existing data, add it to Person List.
//if it is an existing data,we do not do anything,just keep what user enters.
{
list_data.Add_NewData(Index_Old, o);
Rate_Data.AddRateToDictionary(Index_Old, Rate_Data.GetRateFromString(Index_Old, o));
}
}
}
}
else
// when the list is empty,we do not have to check data,just add new data to the Dictionary
{
foreach (string d in NewDataList)
{
string index = Rate_Data.getIndexFromString(d);
list_data.Add_NewData(list_data.getIndexFromString(d), d);
Rate_Data.AddRateToDictionary(index, Rate_Data.GetRateFromString(index, d));
}
}
employee_list.ItemsSource = list_data.getArrayForList(); //updata ItemSource.
ReadFile.Close();
MessageBox.Show("Success!");
}
catch (Exception e)
{
MessageBox.Show($"Sorry,seems something wrong:{Environment.NewLine}{e}", "Error");
}
}
